MODIS Land products are projected as SIN (Sinusoidal grid), and NASA provides MRT (Modis Reprojection Tool) for converting SIN to various projections. I have two questions. 1) When opening MOD land product file, I realized that ENVI doesn't recognize SIN projection because "Proj : Arbitrary (Pixel Based), Datum: " was appeared. Is there any way to recognize SIN projection in ENVI? 2) If there is any way, does ENVI provide the conversion tool from SIN to other projections (e.g. TM, UTM)? Thanks in advance for User's help.