OpenCoord V1.1.0 offers to download OpenCoordV1.1.0.rar
Reason for development:
The coordinate conversion software on the market is not perfect, such as:
(1) The open source software Proj does not support conversion parameter calculation;
(2) The Coord MG program, the famous smiling face program, has less projection, and the Mercator projection (chart projection) conversion is incorrect;
(3) Geocal program, it only has projection conversion.
(4) The reliability of other software needs to be verified
V1.0.1 Revised in August 2017
The following amendments were made on the basis of V1.0.0:
(1) Revised the seven-parameter calculation algorithm
(2) Fixed some errors in the interface.
V1.0.2 2019/01/23 revision
(1) Cannot convert negative DMS, DMM
(2) Projection settings, grayed out to be cleared
(3) When Gaussian projection, when the latitude and longitude are far from the central meridian, the conversion prompt is no transform
V1.1.0 2020.7.30 update date
1) Add 9 parameter free conversion method
2) Corrected the output format of DMS and DMM, less than 10, complement 0, thank you Shanxi Yuncheng surveying and mapping for your valuable comments
3) Fix the problem that the program exits by pressing the enter and ESC keys
4) Change the initial folder to the current folder of the system
About Beijing 54, Xi'an 80 and CGCS2000
OpenCoord supports 42 kinds of ellipsoids and 135 kinds of projections. Currently, only TM and Mecator projections are supported. The most commonly used ellipsoids are:
WGS84, WGS84 for selection list
Beijing 54, select the Krass of the list
Xi'an 80, IAU76 of the selection list
CGCS2000, GRS80 of the selection list
Instructions for the next version V1.2.0
(1) Increase ITRF framework and calendar conversion
(2) Increase EGM2008 query function
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