I have an array of objects where each object has three fields: lat, lon, and category. It is essentially pixels that have been given a land use category. I cannot figure out how to turn this data into a geotiff. I assume I should use geotools. The coordinates are in dec degrees lat long. I know I can use q or arcgis to do this but I need to do it as part of an automated process. Just need a push in the right direction.