Automate OpenIndexMaps GeoJSON Creation

This repository includes Python scripts that will create OpenIndexMaps from a CSV file.

GeoJSON format

OpenIndexMaps use the GeoJSON format.= Here is the general structure of an OpenIndexMap GeoJSON:

Workflow

create-indexmap scripts require a CSV file that contains a spatial field to generate the index map polygons. This field can be either:

• bounding box coordinates (w,s,e,n)

OR

• county names

• Raw data

  At a minimum, the input CSV file must include “Title”, “Bounding Box”, and “Identifier”.

  1. For regular index maps

  It directly queries the coordinates of bounding boxes from the csv files column “Bounding Box”.

  2. For irregular index maps

  In order to create the county-shape polygons, it needs to join the county GeoJSON based on the county name and fetch the coordinates. Therefore, it is necessary to convert the county Shapefile into GeoJSON first.

• Final products

  1. Regular Index maps

  2. Irregular Index maps