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openlayers

openlayers 4 supports csv file

I have csv files with coordinates, I was wondering how to read the coordinates directly and render them on the map. It seems openlayers two OpenLayers.Format.Text before, but I can not find similar options in ol4

Solution

  • You have multiple choices.

    • You can use a third party library that convert CSV to GeoJSON and consume the GeoJSON using ol.format.GeoJSON. I have a demo that just do that.

    • You could also convert CSV to JSON with a library like d3-fetch (not tied to D3 nowadays contrary to what the naming could suggest) or another "csv to json" JavaScript library. Then, you will create with more boilerplate code an array of ol.Feature populated with ol.geom.Point and your fields attributes and provide the array to an ol.source.Vector attached to an ol.layer.Vector.