![]() ![]() (Bonus) Visualize polygon with folium 0.12. One list with longitude and latitude coordinates import geopandas as gpd Polygon.to_file(filename='polygon.shp', driver="ESRI Shapefile") Polygon.to_file(filename='polygon.gpkg', driver="GPKG") Polygon.to_file(filename='polygon.geojson', driver='GeoJSON') Polygon = gpd.GeoDataFrame(index=, crs='epsg:4326', geometry=) Polygon_geom = Polygon(zip(lon_point_list, lat_point_list)) Separate lists with latitude and longitude coordinates import geopandas as gpd ![]() Not setting the right coordinate system can create some issues.This simple code is working for Python 3.9 and geopandas 0.9.0, and it works for older versions too. For the Mapping North Korea project we use EPSG:357 (WGS 84). Make sure the coordinate system is set to the correct option. Don't forget to check if the CRS is set to the right value.īonus: Avoid problems by checking the coordinate system The nice thing about this is that all the smaller grid polygons inherited the properties from the original polygon. Then select a file location and the desired output parameters. If you're satisfied with the result, export the layer by right clicking it -> Export -> Save Feature As. To get a better view of your final sectors disable the original polygon and the grid and set the transparancy of the layer to 50% so you can see through it to the underlying map. What you see then should look something like this. Cick run and close the window when the operation is completed. Select Vector -> Geoprocessing Tools -> Intersection.Īs the input layer select the polygon and as the overlay layer select the grid that you created in the previous step. Now we intersect the grid with the polygon to get the final grid inside the polygon shapes. See the picture in the next section of what the result should look like. Cick run and close the window when the operation is completed. Using ArcScan for ArcGIS, you can convert scanned images into vector-based feature layers. This automatically takes the bounding box of the polygon layer and creates a grid in this bounding box. In the Grid extent section select Calculate from layer -> the polygon layer you added. It is highly highly suggested to use Firefox for maximum experience. Then click polytomize to make art Then download the poly art as a high quality image or SVG. Select Rectangle as the grid type and define the horizontal and vertical spacing size. Click Polytomize (or press the D key) to make the poly art (Click to proceed to making poly art) Patience, we are making art Polytomizator Add points with the brushes. 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. Step 1: Click on Poly Art Within the list of Artsy Effects, simply locate Poly Art, then click on it. 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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