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Vector data processing method in WebGIS (web geographic information system) management system

A management system and vector data technology, applied in the field of vector data processing, can solve problems such as inability to collect data, and achieve the effect of large data range, insignificant length deformation and area deformation

Inactive Publication Date: 2014-02-26
于丽珠
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  • Summary
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AI Technical Summary

Problems solved by technology

The current forest resources management system, because it is a distributed system, the data of each region is managed by the local itself, with the county forestry bureau as the basic unit, so it is impossible to collect specific data from all over the country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Take Heilongjiang's forest resource management system as an example.

[0009] A vector data processing method in a WebGIS management system. The coordinate system in the management system is determined by reference planes and map projection parameters. The data ellipsoid adopts the WGS84 ellipsoid, which is a geocentric coordinate system. The data ellipsoid is a plane coordinate, with m as the unit, and finally undergoes projection conversion, and adopts a scale greater than 1:500,000.

[0010] The accuracy range of Heilongjiang Province is 121 degrees in the west and 135 degrees in the east. According to the range, the central meridian is 129 degrees, and it is projected to zone 22, while the Tahe area spans 123-125 degrees.

[0011] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited to this. Anyone familiar with the technical field within the technical scope disclosed in the present ...

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Abstract

The invention relates to a vector data processing method in a WebGIS management system. According to the vector data processing method of the WebGIS management system, a coordinate system in the WebGIS management system is determined through a reference surface and map projective parameters; a data ellipsoid is a WGS84 (world geodetic system 1984) ellipsoid, namely, a geocentric coordinate system, which is a plane coordinate system in units of meters; projection transformation is performed in the last step; a scale larger than or equal to 1: 500,000 or a BJZ54 (Beijing 54) coordinate system is utilized. The vector data processing method in the WebGIS management system has the advantages that the projection mode has no angle change, no obvious length change and no obvious area change, avoids negative value of the abscissas and has a relatively large data range.

Description

Technical field [0001] The invention relates to a vector data processing method, in particular to a vector data processing method in a WebGIS management system. Background technique [0002] When carrying out forest resource management, the development of a management system is crucial. The current forest resource management system is a distributed system, and the data of each area is managed locally, with the county forestry bureau as the basic unit, so it is impossible to collect specific data from all parts of the country. Summary of the invention [0003] In order to overcome the above technical shortcomings, the present invention invents a vector data processing method in a WebGIS management system. The specific technical solutions are as follows: [0004] A vector data processing method in a WebGIS management system. The coordinate system in the management system is determined by reference planes and map projection parameters. The data ellipsoid adopts the WGS84 ellipsoid...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29
Inventor 于丽珠
Owner 于丽珠
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