A drainage map drawing method and drawing device

Abstract

The invention discloses a drain map plotting method and plotting device. The method includes acquiring map data of route center line of a roadbed and mileage value and displacement information of each drain device or land boundary calibration points of a to-be-plotted drain map; drawing a route center line on a map according to the acquired map data, dividing the route center line into a plurality of line segments and determining mileage information of each line segment; aiming at each calibration point, determining the belonging line segment of a mileage corresponding point of the calibration point according to the mileage value of the calibration point and the mileage information of each line segment and further calculating the coordinates of the mileage corresponding point on the line segment; determining the coordinates of the calibration point on the map according to the determined coordinates of the mileage corresponding point and the displacement information of the calibration point; drawing the calibration point on the map according to the determined coordinates of the calibration point. By applying the method provided by the invention, automatic map plotting is achieved. Therefore, working efficiency is improved and labor cost and material cost are saved.

Description

technical field [0001] The invention relates to the technical field of map drawing, in particular to a map drawing method and a drawing device for drainage. Background technique [0002] Subgrade drainage refers to the measures taken to collect and drain surface or groundwater to ensure the stability of the subgrade. The task of subgrade drainage is to reduce the water content of the soil foundation in the subgrade work area to the allowable range of the project to ensure the stable working condition of the subgrade. The subgrade drainage design should be adapted to local conditions, be economical and applicable, select appropriate drainage equipment, and carry out comprehensive design in combination with various drainage facilities and water conservancy projects such as farmland water conservancy, and should be connected with drainage structures such as bridges, tunnels, and stations. Drainage equipment includes surface drainage equipment and underground drainage equipment...

AI Technical Summary

Problems solved by technology

[0003] The existing roadbed drainage map drawing method needs to use manual methods to trace and draw the line along the center line of the line before drawing to form a line (polyline) composed of many line segments, and the curve section is artificially fitted by many line segments, which has errors; Manually obtained lines are used to make drainage maps, which affects the accuracy of map drawing

In many cases, the software developed with the existing map drawing method for drainage needs human-computer interaction to execute, and there are many inconveniences in use, which affects the efficiency of drawing

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