I need to preprocess a large number of .asc raster files for use in a species distribution model. The model i am using has the requirements that the raster files used are projected into WGS84 and are of the .asc format. This is causing me a issue as the raster files i have need to be projected into BNG before they can be used in ArcGIS Desktop and because most of the tools in ArcGIS will convert a .asc to a Tiff which means i then have to convert it back at the end.
My current workflow is as follows:
- Define the projection of the .asc files
- Project to WGS
- If this has changed the file type then convert back to a .asc
I am aiming to develop the workflow in ArcGIS Desktop to batch process all of the raster files.
What would be the most efficient (least number of processes/tools used) method to define and re-project the raster files while maintaining the .asc format?