Here, we’ll see how to sort features by area and how to remove duplicate features.
Sort features by area
Here is an example of layer I got. The representation is not convenient for printing as small features are partially or totally covered by bigger ones. So, I’d like small features to be on the top.
1-Automatically generate the schema of the shapefile
3-Create an AREA column with the area of each feature
5-Generate the output shapefile
If you aggregate a workspace file with a base file without taking precautions, you could get a layer with duplicate features in it.
You’d like to clean up this file, removing the duplicate features.
I’s very simple to accomplish in Talend SDI:
Here, we reviewed two very simple operations in Talend SDI, yet very easy to create.
They are very simple to accomplish on a PostgreSQL/PostGIS Database but not very handy on flat files like shapeFiles. In this case, Talend/SDI is very useful.
Here is the link if you wish to download the spatial ETL Talend/SDI: