Multi-Resolution Raster format, or .mrr, is a MapInfo Pro Advanced file format that is becoming increasingly common as an output option for many software providers. It is being used in place of .grd and .tiff file formats in some instances, because of its many advantages over most raster formats. I would like to request that alteryx allow .mrr files to be included as input options, as it seems this trend isn't going to decrease anytime soon.