Select Rectangle as the grid type and define the horizontal and vertical spacing size. To create the grid, go to Vector -> Research Tools -> Create Grid. To turn the polygon into a grid, you have to create a grid on top of the polygon, and then intersect it's lines. The polygons are counties and special administrative regions in North Korea. In this image I'm not using one polygon but several polygons from a feature collection. Now you have a layer with a random color as shown below. Make sure the layer is set to the correct projection. If you don't have any geojson file then you can also manually create a layer and draw a polygon of course. This will automatically create a new layer with the right projection. Then select OpenStreetMap and press Add.ĭrag your geojson file into the section at the red arrow. Go to Layer -> Data Source Manager and in the left menu scroll down to XYZ. Add an OpenStreetMap base layer for reference The polygons used in this example are exported from Overpass Turbo, the OpenStreetMap querying tool. In other words, I had to create a raster or grid inside the polygon so that the tasks wouldn't be too big to handle. For the Mapping North Korea project I had to split a region into smaller sectors.
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