keum · November 26, 2018 22:49 · sachinsharma9780 · Nov 26, 2018
diff --git a/How to: shape2geojson b/How to: shape2geojson
 WORK FLOW:Convert Shape files into GeoJSON using GDAl library
 Two step process. 
 Step 1.Convert Data in WGS 84 projection --> 2. Convert shp into Geojson using ogr2ogr

 STEP 1. Make sure your data is in EPSG 4326 (Geographic projection WGS 84) is NOT Web Mercator projection
 (most commonly used projection that can be use to post onto GitHub page is web mercator is EPSG:3857).

 Before geoJSON conversion, make sure data isn't in WGS 84 projection already by checking for projection meta using ogrinfo command.
 Convert WA State Plane EPSG 2926 to WGS 84 - EPSG 4326 (Geographic Projection WGS 84)
 	--Use ogrinfo to check the projection of data, example : sewer.shp
 	TYPE > ogrinfo sewer.shp -al -so  *note* important to type -al first then -so
 	
 	-al :means List all features of all layers (used instead of having to give layer names as arguments).
 	-so : means Summary Only: supress listing of features, show only the summary information 
 	like projection, schema, feature count and extents.


 Converting shape files into geographic coordinate reference system using WGS84 datum w/ long/lat
    in decimal degress using ogr2ogr command
  
 	--Use command ogr2ogr -t_srs EPSG:3857 newname.shp oldname.shp example: sewer.shp (this to convert into web mercator)
 	TYPE > ogr2ogr -t_srs EPSG:4326 newsewer.shp sewer.shp (this into mercator)
 	
 STEP 2.  Once the file has converted to right projection, use ogr2ogr command convert shape file into geoJSON format
 	TYPE > ogr2ogr -f geoJSON new_file.geojson shape-file.shp
 NOTE: new_file has to have extension of .geojson to be view in GitHub correctly. 

 Displaying Long directory to display limited files in screen
 >ls | more 
 >ls | less
	WORK FLOW:Convert Shape files into GeoJSON using GDAl library
	Two step process.
	Step 1.Convert Data in WGS 84 projection --> 2. Convert shp into Geojson using ogr2ogr

	STEP 1. Make sure your data is in EPSG 4326 (Geographic projection WGS 84) is NOT Web Mercator projection
	(most commonly used projection that can be use to post onto GitHub page is web mercator is EPSG:3857).

	Before geoJSON conversion, make sure data isn't in WGS 84 projection already by checking for projection meta using ogrinfo command.
	Convert WA State Plane EPSG 2926 to WGS 84 - EPSG 4326 (Geographic Projection WGS 84)
	--Use ogrinfo to check the projection of data, example : sewer.shp
	TYPE > ogrinfo sewer.shp -al -so note important to type -al first then -so

	-al :means List all features of all layers (used instead of having to give layer names as arguments).
	-so : means Summary Only: supress listing of features, show only the summary information
	like projection, schema, feature count and extents.


	Converting shape files into geographic coordinate reference system using WGS84 datum w/ long/lat
	in decimal degress using ogr2ogr command

	--Use command ogr2ogr -t_srs EPSG:3857 newname.shp oldname.shp example: sewer.shp (this to convert into web mercator)
	TYPE > ogr2ogr -t_srs EPSG:4326 newsewer.shp sewer.shp (this into mercator)

	STEP 2. Once the file has converted to right projection, use ogr2ogr command convert shape file into geoJSON format
	TYPE > ogr2ogr -f geoJSON new_file.geojson shape-file.shp
	NOTE: new_file has to have extension of .geojson to be view in GitHub correctly.

	Displaying Long directory to display limited files in screen
	>ls \| more
	>ls \| less