If the Split module is used after an Import module, it separates layers of a file and feeds each layer to a separate output port. If a Split module is used after a processing module, it splits the cached layers to individual ports. A Split module always has a spare nozzle, which holds the overflow. The module can have a maximum of eight nozzles.
If you have to split more than one type of data, you have to use a Split module for each data type; for example, you require one Split module to split raster data and another Split module to split vector data.
The Merge module resamples all incoming data to match the conditions of the master data source. In the merge process, the merged data remains as separate layers. A Merge module can be connected to up to eight pipes to form one fat pipe. Fat and thin pipes can enter a Merge module, but the output pipe will always be fat because two or more data layers are combined.
You have to use a Merge module for each data type. For example, you require one Merge module to merge raster data and another Merge module to merge vector data.
The Split and Merge modules share the following characteristics:
For more information on the Split and Merge modules, see the CATALYST Professional Algorithm Reference.
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