This node generate multiple polygons with a series distances of each geometric object.
Note: If the input table contains multiple rows the node first computes the union of all geometries before computing the buffers from the union.
The node is based on the GeoPandas project and uses the following related information and function:
Select the geometry column to use.
The buffer distances for geometry
The buffer distances for geometry
Enter the Coordinate reference system (CRS) to use. The input field supports the following types:
Common EPSG codes that can be universally used for mapping coordinates everywhere in the world are:
There are EPSG codes for specific regions that provide a higher accuracy in the corresponding regions:
For a selection of projections that preserve different properties see this Wikipedia article. Once you have found the appropriate projection name or coordinate reference system you can search for its EPSG code at https://epsg.io/. To do so simply type the projection name into the search field (e.g. Pseudo-Mercator). The result page will show you the EPSG code that you can enter in this field (e.g. EPSG:3857) but also the distance unit e.g. meter or degree and the area of use where the projection works best.
If you are looking for a projection for a specific area, try out the Projection wizard page which suggests projection with specific properties for a defined area on the globe. Once you have found the appropriate projection simply click on the WKT link next to the suggested projection name, copy it to your clipboard and paste it into this field.
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To use this node in KNIME, install the extension Geospatial Analytics Extension for KNIME from the below update site following our NodePit Product and Node Installation Guide:
A zipped version of the software site can be downloaded here.
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