Raster and imagery

Upload GeoTIFFs, drone orthomosaics, DEMs, and other raster files. Learn how Felt handles projections, colors, and No Data values.

Raster data is a grid of pixels, such as aerial and satellite imagery, drone orthomosaics, and elevation models. Upload a GeoTIFF or another raster format with Upload Anything, and Felt adds it as a raster layer. Export drone orthomosaics and elevation models as GeoTIFFs; a Cloud Optimized GeoTIFF isn't required for uploads.

Projections

Felt reads a raster's coordinate reference system (CRS) from the file, its ground control points, or a .prj file uploaded with it. If none of these provides a CRS, Felt guesses. If a raster lands in the wrong place, assign its CRS in a desktop GIS such as QGIS, export it as a GeoTIFF, and upload it again.

Colors and No Data values

Felt keeps a raster's color table and No Data values. Colors can look slightly different from the source software, because Felt scales values to 0–255 for display. To change a raster's color ramp or opacity, see Style raster layers.

Stream large rasters

Stream imagery that's too large to upload or changes often. Add tiles from a URL with XYZ raster tiles, or stream Cloud Optimized GeoTIFFs from your own bucket with Stream large rasters.