Using SFLIST I noticed that your srfchina4.sfc file does not contain lat/lon coordinates GEMPAK-SFLIST>l SFFILE = srfchina4.sfc AREA = dset DATTIM = all SFPARM = slat;slon OUTPUT = T IDNTYP = STID GEMPAK-SFLIST>r output: S54505 090712/1400 0.00 0.00 S54597 090712/1400 0.00 0.00 S54421 090712/1400 0.00 0.00 S54706 090712/1400 0.00 0.00 and so on... So it seems that srfchina4.sfc is not being written correctly. I can't diagnose why without knowing how exactly how you're creating srfchina4.sfc from surface.src. -Michael > SIR : > > I have encountered a problem when I run oagrid program . thers are 3 > output messages from the oagrid program. > > A:[FL -13] No valid file for given type and cycle time, > B:[oagrid -9] too few stations to calculate deltan , > c:[oagrid -9] too few stations to calculate deltan . > > could you show me some advice. > > I have attached 4 files for you. > > 1:oagrid.csh is oagrid program shell file > 2:srfchina4.sfc is surface file and I can see the parameter stored in > this file using sflist program. > 3:surface.src is the surface source data which will write into srfchina.sfc > 4:station.tbl is the station information file. > > thanks > > 2009-08-04 > > gcs > > Ticket Details =================== Ticket ID: RZV-218184 Department: Support GEMPAK Priority: Normal Status: Open