Device for calculating assumed rectangular plot size and program for calculating assumed rectangular plot size

Abstract

To easily calculate the assumed rectangular plot size. [Solution] The assumed rectangular land area calculation device 200 includes a plane coordinate setting means 210 that sets an XY plane coordinate system with one of the line coordinates as the origin and a straight line passing through the two line coordinates as the X axis, based on a plurality of outline coordinates for identifying the outer shape of the land to be evaluated and two line coordinates that are any of the outline coordinates and are tangent to the line; an outline coordinate placement means 210 that arranges the plurality of outline coordinates in the XY plane coordinate system; and an assumed rectangular land area calculation means 210 that calculates the land as an assumed rectangular land area by connecting a first straight line parallel to the X axis that includes the coordinate with the maximum Y value among the arranged plurality of outline coordinates, a second straight line perpendicular to the X axis that includes the coordinate with the maximum X value, a third straight line perpendicular to the X axis that includes the coordinate with the minimum X value, and the X axis.

Description

Technical Field

[0001] The present invention relates to an assumed shaping land calculation device and a program for calculating an assumed shaping land. More specifically, the present invention relates to an assumed shaping land calculation device and a program for calculating an assumed shaping land based on a plurality of outer shape coordinates for specifying the outer shape of land to be evaluated.

Background Art

[0002] Conventionally, many land evaluation systems for calculating taxation standards for real estate such as inheritance tax and fixed asset tax have been proposed (for example, see Patent Document 1).

[0003] In the land evaluation system according to Patent Document 1, the evaluation score of a plot is automatically calculated using a computer based on plot map information including plot information and route map information including route information associated with the route value. In this land evaluation system, by associating the route information of the route adjacent to the plot with the plot information, a plot condition including the plot condition regarding the frontage of the plot is derived, a correction rate of the evaluation score of the plot is derived based on the plot condition, and the evaluation score of the plot is calculated using the plot condition, the correction rate, and the route value to perform land evaluation.

[0004] On the other hand, the land to be evaluated for land evaluation is not necessarily in a shaped form such as a rectangle or a square, and is often a so-called irregularly shaped land other than a rectangle or a square.

[0005] When performing land evaluation of irregularly shaped land, it is common to perform evaluation according to the following procedures (1) to (7) using the "Route Value Map and Evaluation Multiplier Table" and the "Irregularly Shaped Land Correction Rate Table" published on the website of the National Tax Agency.

[0006] (1) Check the route value of the irregularly shaped land to be evaluated. (2) Obtain an assumed shaped land by treating the irregularly shaped land as a shaped land. (3) Obtain the land area classification and the shaded area ratio. (4) Based on (3), obtain the irregularly shaped land correction rate. (5) Determine the calculated depth distance. (6) Calculate the depth price adjustment rate. (7) Calculate the assessed value of the irregularly shaped land.

[0007] For example, the assessed value of an irregularly shaped plot of land is: Appraisal value of irregularly shaped land = road value × depth price adjustment rate × irregularly shaped land adjustment rate × area of ​​irregularly shaped land It is calculated by [this method]. In general, a presumed regular-shaped plot of land is defined as "a rectangular or square plot of land that encloses the entire area of ​​an irregularly shaped plot and faces the main road." [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2002-236734 [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] When performing land valuation using the procedure described above, the process of "determining the assumed regular-shaped plot" as shown in (2) is necessary. However, conventional land valuation systems have not made it easy to automatically calculate the assumed regular-shaped plot.

[0010] The present invention has been made in view of the above problems, and aims to provide a device for calculating assumed rectangular land and a program for calculating assumed rectangular land that can easily calculate assumed rectangular land. [Means for solving the problem]

[0011] To solve the above problems, the assumed regular-shaped land calculation device according to the present invention includes a plane coordinate setting means that sets an XY plane coordinate system based on information of a plurality of outline coordinates for identifying the outer shape of the land to be evaluated and information of two line coordinates, which are any of the plurality of outline coordinates and form one side of the outline shape and are tangent to a line, with one of the two line coordinates as the origin, the line passing through the two line coordinates as the X axis, and the line passing through the origin and intersecting the X axis perpendicularly as the Y axis, and an outline coordinate placement means that arranges the plurality of outline coordinates in the XY plane coordinate system The device is characterized by comprising: a step; a first straight line parallel to the X-axis that includes the coordinate where the Y value is maximized among the plurality of outline coordinates arranged in the XY plane coordinate system; a second straight line perpendicular to the X-axis that includes the coordinate where the X value is maximized among the plurality of outline coordinates arranged in the XY plane coordinate system; a third straight line perpendicular to the X-axis that includes the coordinate where the X value is minimum among the plurality of outline coordinates arranged in the XY plane coordinate system; and a means for calculating a rectangular plot of land defined by connecting these four lines with the X-axis, which is used to calculate a presumed

[0012] Furthermore, in the assumed rectangular land shape calculation device described above, the plurality of external shape coordinates may be set by specifying coordinates for identifying the external shape using an input means with respect to the map image of the land to be evaluated displayed on the display means.

[0013] Furthermore, in the assumed rectangular plot calculation device described above, the assumed rectangular plot calculated by the assumed rectangular plot calculation means may be superimposed on the map image of the land to be evaluated displayed on the display means.

[0014] Furthermore, in the assumed rectangular plot calculation device described above, the plurality of outline coordinates may be updated by modifying and specifying the coordinates for identifying the outline using the input means with respect to the map image on which the assumed rectangular plot is superimposed; the planar coordinate setting means resets the XY planar coordinates based on the updated plurality of outline coordinates; the outline coordinate placement means rearranges the updated plurality of outline coordinates to the rearranged XY planar coordinates; and the assumed rectangular plot calculation means calculates a new assumed rectangular plot based on the rearranged plurality of outline coordinates.

[0015] Furthermore, in the assumed rectangular plot calculation device described above, the route coordinates are set by specifying two coordinates from the plurality of outline coordinates using the input means, and when the route coordinates are updated by the input means while the assumed rectangular plot is superimposed on the map image, the planar coordinate setting means resets the XY planar coordinates based on the updated route coordinates, the outline coordinate placement means rearranges the plurality of outline coordinates to the reset XY planar coordinates, and the assumed rectangular plot calculation means calculates a new assumed rectangular plot based on the rearranged plurality of outline coordinates.

[0016] In addition, the program for calculating the assumed shaping land according to the present invention is based on information of a plurality of outer shape coordinates for specifying the outer shape of the land to be evaluated, and information of two route coordinates that are any of the plurality of outer shape coordinates and form one side of the outer shape and are in contact with a route. The computer is caused to set XY plane coordinates with any one of the two route coordinates as the origin, the straight line passing through the two route coordinates as the X-axis, and the straight line passing through the origin and perpendicular to the X-axis as the Y-axis; an outer shape coordinate arrangement function for arranging the plurality of outer shape coordinates in the XY plane coordinates; among the plurality of outer shape coordinates arranged in the XY plane coordinates, a first straight line including the coordinate with the maximum Y value and parallel to the X-axis, a second straight line including the coordinate with the maximum X value and perpendicular to the X-axis among the plurality of outer shape coordinates arranged in the XY plane coordinates, a third straight line including the coordinate with the minimum X value and perpendicular to the X-axis among the plurality of outer shape coordinates arranged in the XY plane coordinates, and an assumed shaping land calculation function for calculating, as an assumed shaping land, a rectangular land defined by connecting four straight lines with the X-axis. It is characterized in that it is a program for realizing the above functions.

Effects of the Invention

[0017] According to the assumed shaping land calculation device and the program for calculating the assumed shaping land according to the present invention, the assumed shaping land can be calculated simply.

Brief Description of the Drawings

[0018] [Figure 1] It is a block diagram showing a schematic configuration of a land evaluation system. [Figure 2] It is a block diagram showing a schematic configuration of a client terminal and a server. [Figure 3] It is a flowchart showing information setting processing in a client terminal. [Figure 4] It is a diagram showing an example of a setting screen displayed on a display unit of a client terminal. [Figure 5] It is a flowchart showing land evaluation calculation processing in a server. [Figure 6] It is a flowchart showing the calculation process of the assumed shaping area in the server. [Figure 7] It is a diagram explaining the process of calculating the assumed shaping area based on the outer shape coordinate information. [Figure 8] It is a flowchart showing the calculation result display process of the client terminal. [Figure 9] It is a diagram showing a state where the assumed shaping area is superimposed and displayed on the map image of the setting screen shown in FIG. 4. [Figure 10] (a) to (c) are diagrams showing examples where the shape of the assumed shaping area varies depending on the method of setting the route coordinates.

Embodiments for Carrying out the Invention

[0019] Hereinafter, the assumed shaping area calculation device according to the present invention will be described in detail with reference to the drawings, taking a land evaluation system as an example. FIG. 1 is a block diagram showing the schematic configuration of the land evaluation system. The land evaluation system 100 includes a server 200 for performing land evaluation and a client terminal 300.

[0020] The client terminal 300 is connected to the server 200 through the Internet N. The client terminal 300 transmits information (land-related information) necessary for land evaluation to the server 200, receives information regarding the land evaluation calculated by the server 200 (calculation result information), and performs a process of displaying it on the display means. Although only 3 client terminals 300 are shown in FIG. 1 for convenience of explanation, the number of client terminals 300 connected to the server 200 is not particularly limited, and it may be less than 3 or 4 or more. Also, the network used when the client terminal 300 connects to the server 200 is not limited to the Internet N, and it may be a WAN (Wide Area Network) other than the Internet, a LAN (Local Area Network), or the like.

[0021] The client terminal 300 is a digital device equipped with communication functions, and can include, for example, a smartphone, a tablet device, or a PC (personal computer) terminal.

[0022] As shown in Figure 2, the client terminal 300 comprises a client control unit 310 consisting of a CPU (Central Processing Unit), a client storage unit 320 consisting of semiconductor memory such as ROM (Read Only Memory) or RAM (Random Access Memory), a client communication unit 330 consisting of a communication interface, an input unit (input means) 340 consisting of a pointing device such as a touch panel, buttons, a keyboard, or a mouse, and a display unit (display means) 350 consisting of a liquid crystal display or an organic EL display. In this embodiment, a touch panel is used as an example of the input unit 340.

[0023] The client storage unit 320 stores a program that indicates the processing to be executed by the client control unit 310 (for example, processing based on the flowcharts shown in Figures 3 and 6). More specifically, the client storage unit 320 stores (installs) application software that allows the user to input and set information using the input unit 340 in relation to the information displayed on the display unit 350, output the information to the server 200, and to display information acquired from the server 200 on the display unit 350. In the client terminal 300, the client control unit 310 reads the application software from the client storage unit 320 and performs information transmission and reception with the server 200 and information display processing on the display unit 350 according to the application software (program). The application software can be not only dedicated application software for land valuation, but also, for example, a general browser. In this embodiment, the case in which a browser is used as application software will be described.

[0024] The client communication unit 330 communicates with the server 200 based on communication standards such as short-range wireless (e.g., Wi-Fi®, Bluetooth®), long-range wireless (e.g., LTE, 5G), or wired communication.

[0025] The client control unit 310 executes the processing necessary for land evaluation based on the application software stored in the client storage unit 320. More specifically, the client control unit 310 outputs land-related information related to land evaluation, which is input via the input unit 340 through the browser, to the server 200 using the client communication unit 330, and displays information related to land evaluation on the display unit 350 based on the calculation result information obtained from the server 200. The processing content of the client control unit 310 based on the application software will be described later.

[0026] The server 200 performs calculations necessary for land valuation based on land-related information obtained from the client terminal 300, and outputs (transmits) the calculation results as calculated result information to the client terminal 300.

[0027] As shown in Figure 2, the server 200 includes a server control unit 210 consisting of a CPU (Central Processing Unit) and the like (planar coordinate setting means, outline coordinate placement means, assumed shape calculation means), a server storage unit 220 consisting of semiconductor memory such as ROM (Read Only Memory) and RAM (Random Access Memory), and a server communication unit 230 consisting of a communication interface.

[0028] The server storage unit 220 stores a program that outlines the land valuation process executed by the server control unit 210 (for example, the process based on the flowchart shown in Figure 5). The server storage unit 220 also stores data necessary for the land valuation process. For example, data on nationwide land price information, data on irregular land correction rate tables, data on land area classification tables, and data on depth price correction rate tables are stored in the server storage unit 220.

[0029] The server communication unit 230 communicates with the client terminal 300 based on communication standards such as short-range wireless (e.g., Wi-Fi®, Bluetooth®), long-range wireless (e.g., LTE, 5G), or wired communication.

[0030] The server control unit 210 executes land valuation processing based on the program stored in the server storage unit 220. More specifically, the server control unit 210 calculates the assessed value of the target land based on the land-related information obtained from the client terminal 300, and outputs the calculation result information, including the calculated assessed value, to the client terminal 300.

[0031] Next, the information setting process for the client terminal 300 will be described. Figure 3 is a flowchart showing the information setting process in the client terminal 300. Figure 4 is an example of a setting screen displayed on the display unit 350 of the client terminal 300 during the information setting process.

[0032] When a user operates the input unit 340 to launch a browser and accesses a URL for entering land-related information, the display unit 350 of the client terminal 300 displays the land-related information setting screen 351 (S.101). The setting screen allows for the input of multiple pieces of information, but at a minimum, setting fields 352 and 353 for setting district classification information and road value information, and a map image (map information) 355 of the land subject to land valuation are displayed.

[0033] The user sets (inputs) district classification information and land price information according to the setting screen 351 displayed on the display unit 350. The district classification information consists of seven types of district classifications: ordinary residential area, ordinary commercial / mixed-use residential area, office building area, high-density commercial area, downtown area, small and medium-sized factory area, and large factory area. The user can set the district classification information by selecting one of the seven types of district classifications displayed by pressing the v icon in the setting field 352. In Figure 4, "ordinary residential area" is set as the district classification information.

[0034] Furthermore, the road value refers to the assessed value per square meter of land facing a road (route), and can be looked up using the "Road Value Map and Assessment Multiplier Table" on the National Tax Agency's website. Also, as mentioned above, the server storage unit 220 has data on road value information for the entire country pre-stored, so by accessing the server storage unit 220 of the server 200 and referring to the road value information stored in the server storage unit 220, it is possible to obtain the road value information for the land to be assessed. The user enters the assessed value per square meter (road value information) in the road value information setting field 352 on the setting screen 351. In Figure 4, the amount of 150,000 yen is set as the road value information.

[0035] Furthermore, the user sets multiple coordinates (outline coordinates) to identify the outer shape of the land to be evaluated by touching the map image 355 displayed on the display unit 350. Specifically, the user uses the input unit 340 to specify multiple points that form the outer shape S1 of the land. In the setting screen 351 shown in Figure 4, as an example, the coordinates of five points A to E are set as the outer shape coordinates (outline coordinate information). The user also sets the route coordinates (route coordinate information) by selecting the coordinates facing the route (two coordinates, A and B in Figure 4) from the specified multiple outer shape coordinates (outline coordinate information). After setting the district classification information, route value information, outer shape coordinate information, and route coordinate information as described above, the user touches the "Start Calculation" button 357 displayed on the display unit 350.

[0036] The client control unit 310 of the client terminal 300 determines whether or not the "Start Calculation" button 357 has been touched (S.102). If no touch operation has been performed (No in S.102), the same process is repeated until a touch operation is performed. On the other hand, if a touch operation has been performed (Yes in S.102), the client control unit 310 acquires the set district classification information, land value information, outline coordinate information, and route coordinate information (S.103), and checks whether there are any omissions (unset items, etc.) in all the acquired information (S.104).

[0037] If any of the acquired information is missing (unset item), for example, if the district classification is not selected, the land value is not entered, the outline coordinates are not set, or the route coordinates are not specified (No in S.104), the client control unit 310 returns the process to displaying the settings screen (S.101) and prompts the user to re-enter the information. If there are no missing items in any of the information, including the district classification information, land value information, outline coordinate information, and route coordinate information (Yes in S.104), the client control unit 310 outputs this information as land-related information to the server 200 via the client communication unit 330 (S.105) and terminates the information setting process.

[0038] Next, we will explain the land valuation calculation process of server 200. Figure 5 is a flowchart showing the land valuation calculation process in server 200. Figure 6 is a flowchart showing the calculation process of the assumed rectangular plot shown in S.203 of Figure 5. Figure 7 is a diagram illustrating the process of calculating the assumed rectangular plot based on the outline coordinate information.

[0039] The server control unit 210 acquires land-related information from the client terminal 300 (S.201) and calculates the area (land area) of the land to be evaluated based on the external coordinate information of the acquired land-related information (S.202). Here, the shape of the land to be evaluated is not limited to "regularly shaped land" such as squares or rectangles. For example, there are many plots of land that are not shaped like squares or rectangles, such as triangles or L-shapes. Such land is called irregularly shaped land.

[0040] The server control unit 210 calculates the area of ​​the target land and then performs a process to calculate the assumed regular-shaped land (assumed regular-shaped land calculation process) (S.203). Here, the assumed regular-shaped land means "a rectangular or square plot of land that surrounds the entire area of ​​the irregularly shaped land and faces a road." The server control unit 210 calculates the coordinates facing the road (road coordinates) based on the road coordinate information. In this embodiment, as explained with reference to Figure 4, the A coordinate and B coordinate are set as the road coordinates in the road coordinate information.

[0041] In the process of calculating the assumed shape of the land, the server control unit 210 first performs a planar coordinate setting process (planar coordinate setting process, S.301). Specifically, as shown in Figure 7, the server control unit 210 sets the XY planar coordinates by setting one of the two route coordinates (A coordinate and B coordinate) adjacent to the route as the origin coordinate, setting the line passing through these two route coordinates (A coordinate and B coordinate) as the X axis, and further setting the line passing through the origin coordinate and perpendicular to the X axis as the Y axis.

[0042] Next, the server control unit 210 performs the process (S.302) of arranging each coordinate (outline coordinate) from A to E, which is identified by the outline coordinate information, into the XY plane coordinates. Then, the server control unit 210, (1) Among the coordinates A to E, the first line L1 is parallel to the X-axis and includes the coordinate (coordinate D) where the Y value is maximized. (2) Among the coordinates A to E, the second line L2 intersects the X-axis perpendicularly and includes the coordinate where the value of X is maximized (coordinate C), (3) Among the coordinates A to E, the third line L3 intersects the X-axis perpendicularly and includes the coordinate where the value of X is minimized (coordinate E), (4) Line L0 that constitutes the X axis The rectangular plot of land defined by connecting the four straight lines is calculated as the assumed regular-shaped plot S2 (S.303).

[0043] Next, the server control unit 210 calculates the area of ​​the calculated assumed regular-shaped plot (S.204). Even if the land subject to land valuation is a regular-shaped plot, the method for calculating the assumed regular-shaped plot described above can be used to calculate a regular-shaped plot (S.203, S.301~S.303). For this reason, there is little need for the server control unit 210 to strictly determine whether the land subject to valuation is a regular-shaped or irregular-shaped plot.

[0044] Subsequently, the server control unit 210 calculates the shaded area percentage (S.205). The shaded area percentage is, Shade area ratio = (Area of ​​assumed regular-shaped plot - Area of ​​irregular-shaped plot) ÷ Area of ​​assumed regular-shaped plot It is calculated as follows. "Area of ​​irregularly shaped land" refers to the area of ​​the land subject to evaluation calculated in S.202.

[0045] Next, the server control unit 210 reads the irregular land correction rate table and the land area classification table stored in the server storage unit 220 (S.206), and determines the land area classification from the land area classification table based on the district classification information of the land-related information obtained from the client terminal 300 and the area of ​​the land to be evaluated (area of ​​the irregular land) (S207). Then, the server control unit 210 determines the irregular land correction rate from the irregular land correction rate table based on the district classification information, the land area classification and the shaded area ratio (S.208).

[0046] Furthermore, the server control unit 210 calculates the calculated depth distance based on the area of ​​the land to be evaluated (area of ​​the irregularly shaped land) and the distance between point A and point B facing the road (frontage distance) (S.209). Calculated depth = Area of ​​the land being evaluated (area of ​​irregularly shaped land) ÷ Frontage distance Note that the calculated depth cannot exceed the actual depth of the assumed rectangular plot. Therefore, if the calculated depth is longer than the actual depth of the assumed rectangular plot, the value will be adjusted.

[0047] Then, the server control unit 210 determines the depth price adjustment rate based on the district classification information and the calculated depth distance using the depth price adjustment rate table (S.210).

[0048] Subsequently, the server control unit 210 calculates the assessed value of the land to be assessed (irregularly shaped land) based on the land price information, the depth price adjustment rate, the irregularly shaped land adjustment rate, and the area of ​​the land to be assessed (area of ​​the irregularly shaped land) (S.211). The assessed value of the land subject to valuation (irregularly shaped land) = Land value × Depth price adjustment rate × Irregular shape adjustment rate × Area of ​​the land to be evaluated (area of ​​irregularly shaped land)

[0049] The server control unit 210 outputs calculation result information, which includes at least the coordinate information of each unit forming the assumed regular-shaped plot (assumed regular-shaped plot coordinate information) and the assessed value of the irregularly shaped plot, to the client terminal 300 using the server communication unit 230 (S.212), and terminates the land valuation calculation process. The calculation result information may also include information such as the area of ​​the assumed regular-shaped plot, the area of ​​the irregularly shaped plot, the shaded area ratio, the irregularly shaped plot correction rate, and the depth price correction rate.

[0050] The above explanation described the basic method for calculating the assessed value of irregularly shaped land. However, the National Tax Agency's website describes the following four methods for calculating the assessed value of irregularly shaped land. 1. A method for dividing an irregularly shaped plot of land into a regular-shaped plot. 2. A method using the "depth distance" obtained by dividing the area of ​​an irregularly shaped plot by the "frontage distance". 3. A method of assuming a "approximately regular-shaped plot" that resembles an irregularly shaped plot. 4. A method that calculates by combining the "approximately regular-shaped plot" with adjacent regular-shaped plots and then subtracting the adjacent regular-shaped plots. Of these, "2. The method of using the 'depth distance' obtained by dividing the area of ​​the irregularly shaped plot by the 'frontage distance'" is the method described in this embodiment. Even when calculating the assessed value of an irregularly shaped plot using either method, if an assumed regular-shaped plot is used, the assumed regular-shaped plot calculation process (S.301~S.303) described above can be applied.

[0051] Next, the calculation result display process on the client terminal 300 will be explained. Figure 8 is a flowchart showing the calculation result display process on the client terminal 300. Figure 9 shows the display screen of the display unit 350, which displays the calculation result information acquired from the server 200.

[0052] The client control unit 310 of the client terminal 300 determines whether or not it has obtained calculation result information from the server 200 (S.401). If it has not obtained the calculation result information (No in S.401), it repeatedly executes the same process until it obtains the calculation result information.

[0053] If calculation result information is obtained (Yes in S.401), the client control unit 310 displays the assessed value of the land to be evaluated (irregularly shaped land) included in the calculation result information on the display unit 350 (S.402). In this embodiment, as shown in Figure 9, not only the assessed value of the land to be evaluated (assessed value of the target land, assessed value of the irregularly shaped land) 361, but also the area of ​​the assumed regular-shaped land 362, the area of ​​the irregularly shaped land 363, the shaded area ratio 364, the irregularly shaped land correction rate 365, and the depth price correction rate 366 are displayed on the display unit 350. Furthermore, the client control unit 310 identifies each coordinate forming the assumed regular-shaped land based on the assumed regular-shaped land coordinate information included in the calculation result information, and overlays the assumed regular-shaped land S2 onto the map image 355 on the display unit 350 (S.403), and then terminates the process. Figure 9 shows how the assumed regular-shaped plot S2 is superimposed on the irregular-shaped plot (the irregular-shaped plot indicated by the outer shape S1) in the map image 355 of the settings screen.

[0054] The user can find out the assessed value (assessment result) of the land being assessed by checking the assessed value (assessment value of irregularly shaped land) 361 displayed on the display unit 350.

[0055] Furthermore, the assumed rectangular plot S2 calculated for determining the land's appraised value is superimposed on the map image 355, allowing for visual confirmation of whether the assumed rectangular plot calculated by the server control unit 210 is appropriate.

[0056] For example, the National Tax Agency's website provides an explanation on "how to determine a hypothetical regular-shaped plot of land facing a winding road." As shown in Figures 10(a) to (c), even when determining a hypothetical regular-shaped plot based on the same external coordinates, the external shape (more specifically, the area) that may qualify as a hypothetical regular-shaped plot will differ depending on how the road coordinates are set. In such cases, the plot with the smallest area will qualify as the hypothetical regular-shaped plot. In the land valuation system 100 according to this embodiment, the hypothetical regular-shaped plots can be visually confirmed by superimposing them on the map image 355. This allows for the visual identification of hypothetical regular-shaped plots with different road coordinate settings, and the area 362 of the hypothetical regular-shaped plot is displayed in the calculation result information on the setting screen 351, making it easy to determine the hypothetical regular-shaped plot with the smallest area.

[0057] Furthermore, if the user determines that the calculated assumed plot shape is inappropriate based on the shape of the assumed plot displayed on the display unit 350, they can easily obtain a new assumed plot with the corrected (updated) settings by correcting the outline coordinates and route coordinates displayed on the display unit 350 and touching the "Start Calculation" button 357 again. In other words, by correcting the outline coordinates and route coordinates displayed on the display unit 350, the user can easily obtain the corrected calculation result information from the server 200 and visually confirm the corrected shape of the assumed plot any number of times.

[0058] Similarly, if there are errors in the district classification information, land price information, outline coordinate information, or route coordinate information set by the user, the corrected new information can be easily obtained by correcting the information on the display unit 350 (for example, by correcting the A coordinates to E coordinates shown in the map image 355) and touching the "Start Calculation" button 357.

[0059] The assumed rectangular land plot calculation device and program for calculating assumed rectangular land plots according to the present invention have been described above, with the land evaluation system 100 as an example. However, the assumed rectangular land plot calculation device and program for calculating assumed rectangular land plots according to the present invention are not limited to the examples shown in the embodiments. In the land evaluation system 100 according to the embodiment, the case in which the outline coordinates are set by touch operation on the client terminal 300 has been described. However, the setting of outline coordinates is not limited to touch operation, etc. For example, it is also possible to set them by clicking using a mouse as the input unit 340. [Explanation of Symbols]

[0060] 100...Land valuation system 200 ... Server 210 ... Server control unit (planar coordinate setting means, outline coordinate placement means, assumed rectangular land calculation means) 220 ... Server storage unit 230 ... Server Communication Unit 300 ... Client terminals 310 ... Client control unit 320 ... Client memory unit 330 …Client Communications Department 340 ... Input section (input means) 350...Display section (display means) 351 ... Settings screen 352 ...Settings field for district classification information 353 ...Settings for land price information 355 ...Map image 357... "Start Calculation" button 361... Appraisal value of irregularly shaped land (display field) 362... Area of ​​the assumed rectangular plot (display field) 363... Area of ​​irregularly shaped land (indication field) 364... Shaded area percentage (display field) 365... Irregular land shape correction rate (display field) 366... ​​Depth price adjustment rate (display field) L0…X axis (straight line) L1…first straight line L2…Second straight line L3…Third straight line N...Internet S1…(The outer shape of the irregularly shaped plot of land being evaluated) S2... Expected shaping location

Claims

1. Information on multiple outline coordinates to identify the outer shape of the land to be evaluated, One of the aforementioned plurality of outline coordinates, and information of two line coordinates that form one side of the outline and are tangent to the line, Based on, A plane coordinate setting means for setting an XY plane coordinate system, where one of the two aforementioned route coordinates is the origin, the line passing through the two aforementioned route coordinates is the X-axis, and the line passing through the origin and intersecting the X-axis perpendicularly is the Y-axis, External coordinate arrangement means for arranging the plurality of external coordinates in the XY plane coordinates, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a first straight line parallel to the X-axis includes the coordinate where the Y value is maximized, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a second line intersects the X-axis perpendicularly and includes the coordinate where the value of X is maximized, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a third line intersects the X-axis perpendicularly and includes the coordinate where the value of X is minimized, The aforementioned X-axis and A means for calculating a presumed regular-shaped plot of land, which is a rectangular plot of land defined by connecting four straight lines, and A device for calculating assumed land shape, characterized by having the following features.

2. The aforementioned multiple external coordinates are, The settings are determined by specifying coordinates for identifying the outer shape of the land to be evaluated using an input means, with respect to the map image of the land to be evaluated displayed on the display means. The assumed rectangular land area calculation device according to claim 1, characterized by the above.

3. The assumed rectangular plot calculated by the assumed rectangular plot calculation means is superimposed on the map image of the land to be evaluated displayed on the display means. The assumed shape calculation device according to claim 2, characterized by the following:

4. The aforementioned multiple outline coordinates are updated and set by modifying and specifying the coordinates for identifying the outline using the input means, with respect to the map image in which the assumed shaped area is superimposed. The plane coordinate setting means resets the XY plane coordinates based on the updated and set plurality of outline coordinates. The outline coordinate arrangement means rearranges the updated and set plurality of outline coordinates to the reset XY plane coordinates, The aforementioned assumed rectangular plot calculation means calculates a new assumed rectangular plot based on the rearranged plurality of outline coordinates. The assumed rectangular land area calculation device according to feature 3.

5. The aforementioned route coordinates are set by specifying two coordinates from the plurality of outline coordinates using the input means. When the assumed shaped area is superimposed on the map image, and the route coordinates are updated by the input means, The plane coordinate setting means resets the XY plane coordinates based on the updated route coordinates, The outline coordinate arrangement means rearranges the plurality of outline coordinates into the reset XY plane coordinates, The aforementioned assumed rectangular plot calculation means calculates a new assumed rectangular plot based on the rearranged plurality of outline coordinates. The assumed rectangular land area calculation device according to feature 3.

6. Information on multiple outline coordinates to identify the outer shape of the land to be evaluated, One of the aforementioned plurality of outline coordinates, and information of two line coordinates that form one side of the outline and are tangent to the line, Based on, On the computer, A plane coordinate setting function that sets an XY plane coordinate system where one of the two aforementioned route coordinates is the origin, the line passing through the two aforementioned route coordinates is the X-axis, and the line passing through the origin and intersecting the X-axis perpendicularly is the Y-axis, An external coordinate placement function that places the aforementioned multiple external coordinates on the XY plane coordinate system, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a first straight line parallel to the X-axis includes the coordinate where the Y value is maximized, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a second line intersects the X-axis perpendicularly and includes the coordinate where the value of X is maximized, Among the plurality of outline coordinates arranged in the XY plane coordinate system, a third line intersects the X-axis perpendicularly and includes the coordinate where the value of X is minimized, The aforementioned X-axis and The function calculates a rectangular plot of land defined by connecting four straight lines, which is then used to calculate the assumed rectangular plot. A program for calculating the assumed shape of a plot of land to achieve this.

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