KNIME Spatial Processing Nodes version 1.2.2.v201911131528 by EIFER (European Institute for Energy Research)
In order to compute the size of the area in square meters, the node reprojects on the fly the geometries into an automatic projection  as defined by the Open Geospatial Consortium . This might lead to conversion errors in case your initial Coordinate Reference System is not an ESPG standard one. If you get errors related to Bursa Wolf parameters or similar errors due to projection, please try to use the "Reproject WKT geometries" in order to first reproject your geometries into a welldefined CRS.
The actual computation is done by the powerful Geotools library.
To use this node in KNIME, install KNIME Spatial Processing Nodes from the following update site:
A zipped version of the software site can be downloaded here.
You don't know what to do with this link? Read our NodePit Product and Node Installation Guide that explains you in detail how to install nodes to your KNIME Analytics Platform.
You want to see the source code for this node? Click the following button and we’ll use our super-powers to find it for you.
Do you have feedback, questions, comments about NodePit, want to support this platform, or want your own nodes or workflows listed here as well? Do you think, the search results could be improved or something is missing? Then please get in touch! Alternatively, you can send us an email to email@example.com, follow @NodePit on Twitter, or chat on Gitter!
Please note that this is only about NodePit. We do not provide general support for KNIME — please use the KNIME forums instead.