Hi folks, Now I want to use the ENVI_CONVERT_FILE_MAP_PROJECTION routines in my IDL program. I tried to compile and run the example of this routine in the online help of ENVI. But I always get a error, the error message is "Keyword parameters not allowed in call. Execution halted at: ENVI_CONVERT_FILE_MAP_PROJECTION ". Could anyone please give me some advice of how to use this routine? Thanks your help in advance. Cheers, Wang Zhicheng