Hello, I'm fairly new to ArcGIS Pro, and I'm having a lot of trouble with something that I expected be fairly simple, so forgive me if I've overlooked something obvious.
I'm trying to create a 250m resolution soil raster map of the UK, but I can only download this data in individual 2x2 degree tile TIFFs. It takes 21 such tiles to cover the UK. I now want to use ArcGIS Pro to combine these separate rasters into a single layer or TIFF, so that future operations can be done once instead of 21 separate times. I don't want to change the soil data in each cell, I just want all of the data to be grouped into a single raster layer instead of 21 separate ones.
I've tried this with several tools. With Raster Calculator and Combine I have only succeeded at creating empty rasters that do not appear on the map and have no rows in their attribute tables. With Mosaic to New Raster I have managed to create a viable raster, but this tool has a frustrating tendence to slightly alter the soil values. I can tell because the maximum value of the combined raster is less than the maximum value of the separate rasters. I have tried each of the mosaic operators and resampling techniques, but so far it has been impossible to preserve the exact soil data.
Are there any options I haven't tried yet? Or is some error inevitable when combining rasters? I may end up doing it in Python.
