Multi Resolution Raster (Read File, Only)
Alteryx Designer 2019.4 and later supports the reading of Multi Resolution Raster (MRR), created by Pitney Bowes. The new MRR reader in Alteryx Designer is similar to the .GRD reader in that it reads a single raster band from a file, with each pixel in the raster band containing a value.
Configure
Go to the drop-down Connect a File or Database list in the Configuration panel, and select your (.mrr) file.
In the Configuration panel, select the band you want to read in your workflow, located under Value. Note that your .mrr file must have more than 1 raster band to see this option.