i just follow the step to change .hdf file to geotiff file from this site http://duncanjg.wordpress.com/2012/12/11/loading-modis-ndvi-time-series-into-postgis-raster/#comment-1214
and i use data from http://reverb.echo.nasa.gov/reverb but, why my tiff just grayscale mode (black white)?
so how can i get color mapping?