Centre county Pennsylvania, USA | We use QGIS for yield maps. Yield data is imported in Ag Leader txt file format. Have never tried importing tif files, but it should work. QGIS is a popular open source free GIS system that seems to be as popular as commercial GIS systems, including plugins for almost any task needed.. Here is a link that talks about using tif files in QGIS.
http://gis.stackexchange.com/questions/94872/tif-format-to-view-a-v... |
shapefile mapping
