GeoTIFF is a TIFF-based format for geospatial raster data, used widely in remote sensing, GIS, and earth observation.

Transparent Access: Read GeoTIFF files with nc_open() and standard NetCDF functions.

Dimension Mapping:

Bands → NetCDF dimension (multi-band files)
Rows (height) → NetCDF y dimension
Columns (width) → NetCDF x dimension

CF-1.8 CRS Metadata: A crs grid-mapping variable is emitted with coordinate variables (lon/lat or x/y) and optional bounds. See docs/cf-compliance.md for the full attribute specification.

Use Cases: Satellite imagery, land cover maps, digital elevation models, MODIS flood products.

Enabling:

cmake -B build -DNEP_ENABLE_GEOTIFF=ON # CMake

./configure --enable-geotiff # Autotools

Dependencies: libgeotiff, libtiff.

Resources: GeoTIFF Home · OGC GeoTIFF Standard · GDAL GeoTIFF Driver

Example:

nc_open("satellite_image.tif", NC_NOWRITE, &ncid);
nc_inq_varid(ncid, "data", &varid);
nc_get_vara_uchar(ncid, varid, start, count, buf);
nc_close(ncid);