This is a fork of egsa87 project that can be used to convert a CSV from WGS84 to EGSA87 (ΕΓΣΑ87)
$ make
$ ./calculate input_file.csv output_file.csv
The input_file.csv must have the following format:
name, latitude, longitude
Export as CSV the points from Google MyMaps. Only the Latitude and Longitude which is associated with the point and the point name will be maintained.
python google_mymaps_2_egsa87.py inputfromgoogle.csv
The inputfromgoogle.csv must have the following format:
WKT,name,.....
"POINT (25.533135 37.145893 0.0)",pointname,....
Export as CSV the points from Google MyMaps. Only the Latitude and Longitude which is associated with the point and the point name will be maintained.
python google_mymaps_2_egsa87.py inputfromgoogle.csv google_mymaps_egsa87_output.csv
WKT,name,.....
"POINT (25.533135 37.145893 0.0)",pointname,....
The output will have the following format:
name, 25.533135, 37.145893, 1827965.198315, 2890138.776154
Transforms exported points of simple EGSA CSV of format 'name lat lon egsa_lat egsa_lon' to GML polygon for ktimatologio.gr. The input should have the following format:
PART A, 25.528307, 37.150476, 635570.480603, 4112370.610919
PART B, 25.528242, 37.150388, 635564.865287, 4112360.754550
PART C, 25.528437, 37.150448, 635582.075885, 4112367.690413
PART D, 25.528068, 37.150260, 635549.641196, 4112346.304348
PART E, 25.527863, 37.150203, 635531.537070, 4112339.687090
PART F, 25.527877, 37.150340, 635532.535584, 4112354.906899
PART G, 25.527888, 37.150434, 635533.344508, 4112365.351683
PART H, 25.528021, 37.150444, 635545.138296, 4112366.651416
PART I, 25.528107, 37.150362, 635552.922469, 4112357.676770
To execute:
python egsa87_2_GML.py google_mymaps_egsa87_output.csv google_mymaps_egsa87_output.gml
The output:
<?xml version="1.0" encoding="UTF-8"?>
<gml:FeatureCollection xmlns:gml="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:fme="http://www.safe.com/gml/fme" xsi:schemaLocation="http://www.safe.com/gml/fme test.xsd">
<gml:boundedBy>
<gml:Envelope srsName="EPSG:2100" srsDimension="2">
<gml:lowerCorner>635531.537070 4112339.687090</gml:lowerCorner>
<gml:upperCorner>635582.075885 4112370.610919</gml:upperCorner>
</gml:Envelope>
</gml:boundedBy>
<gml:featureMember>
<gml:surfaceProperty>
<gml:Surface srsName="EPSG:2100" srsDimension="2">
<gml:patches>
<gml:PolygonPatch>
<gml:exterior>
<gml:LinearRing>
<gml:posList>635570.480603 4112370.610919 635564.865287 4112360.754550 635582.075885 4112367.690413 635549.641196 4112346.304348 635531.537070 4112339.687090 635532.535584 4112354.906899 635533.344508 4112365.351683 635545.138296 4112366.651416 635552.922469 4112357.676770 635570.480603 4112370.610919</gml:posList>
</gml:LinearRing>
</gml:exterior>
</gml:PolygonPatch>
</gml:patches>
</gml:Surface>
</gml:surfaceProperty>
</gml:featureMember>
</gml:FeatureCollection>
Functions to convert geodetic coordinates from the World Geodetic System 1984 (WGS84) to the Hellenic Geodetic Reference System 1987 (HGRS87/EGSA87) Greek geodetic system and vice versa.
The root directory contains Matlab implementations; C ports of the same functions are in directory ./C
Code is based on the icoordstrans library. For an overview of spatial referencing, see this.
There is also a sidecar utility to transform Google mymaps points into simple CSV.
Use these conversion functions at your own risk. No warranties are made regarding the accuracy and reliability of the provided code.
GPL
Development has received funding from the European Union’s Horizon 2020 Research and Innovation program under grant agreement No 826506 -- sustAGE.
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