I don't understand the difference between OGR and Geopandas librairies. I have checked the documentation of GDAL as well as http://geopandas.org/ but I still don't get it. I just started learning about them and for now I'm trying to write some scripts in python using Geopandas.
My goal is to select features from a shapefile where field="value", then export the selected features to a shapefile. The second step would be to add another field to the output shapefile(with only the selected features from the first shapefile) and set it to a certain value. Doing the second part with OGR seems easy. This is how I've done it :
from osgeo import ogr driver = ogr.GetDriverByName('ESRI Shapefile') dataSrc = driver.Open("myshp.shp", 1) fld = ogr.FieldDefn('City', ogr.OFTString) lyr = dataSrc.GetLayer() lyr.CreateField(fld) for feature in lyr: feature.SetField("Not Found", fld) layer.SetFeature(feature) dataSrc= None
However I don't see how I can do the same thing using Geopandas. I might be missing the point though that's why I'm confused between the use of the two librairies.
I know that this is easily done using QGIS or ArcGIS manually, but as of now I'm trying to learn how to use python with Geopandas.
How can I achieve my goal explained above using Geopandas?