<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">I know this is very simple. I RTFMed as much as I could. <br>I have RPC as well as offset and scale values. I want to create NITF files out of TIFFs. I sense gdalwarp is the command, but I really cannot figure out how to embed these coefficients to the header file. I am not asking for step by step explanation. Any link to a help file will do.<br>Thanks.<br> <br></td></tr></table><br>