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polygon import Polygon: from shapely. # Get the polygons using shapely polys = mask_to_polygons (BW, min_area = 50) # Convert the polygons back to a mask image to validate that all went well mask = mask_for_polygons (polys, BW. # Here's an example Shapely geometry poly = Polygon([(0, 0), (0, 1), (1, 1), (0, 0)]) # Now convert it to a shapefile with OGR driver = ogr.GetDriverByName('Esri Shapefile') ds = driver.CreateDataSource('my.shp') layer = ds.CreateLayer('', None, ogr.wkbPolygon) # Add one attribute layer.CreateField(ogr.FieldDefn('id', ogr.OFTInteger)) By general-purpose, I mean it doesn’t manipulate any filesize reduction processes (e.g., removing unnecessary json tags) other than limiting the number of Polygon elements per MultiPolygon geometry. Shapely - convert polygons to lines? In my previous two posts, I showed how to (1) read and plot shapefile geometries using the pyshp library an GeoDataFrame. Steps to reproduce the problem. shapely.geometry.polygon.orient Example - Program Talk Shapely Polygons: Coloring Shapefile Polygons | Chris Havlin This is the first appearance of an explicit polygon handedness in Shapely. To obtain a polygon with a known orientation, use shapely.geometry.polygon.orient(): shapely.geometry.polygon.orient(polygon, sign=1.0)¶ Returns a properly oriented copy of the given polygon. from shapely. I have a geopandas dataframe (list of polygons) gdf size:(5,11) and I want to convert the polygons of the df into shapely MultiPolygon. Create a Polygon. shape [: 2]) # View - you'll see some loss in detail compared to the before-polygon # image if min_area is high - go ahead and try different numbers! How to write Shapely geometries to shapefiles? - NewbeDEV 2) Si les deux polygones sont déconnectés, le résultat est nécessaire un MultiPolygon (en rouge avec deux polygones) Simply do Polygons = list(Multi) from_file (indata) outdf = gpd. The following are 30 code examples for showing how to use shapely.geometry.Polygon (). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. How to Dissolve Polygons Using Geopandas: GIS in Python

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