using two files with different time ranges

[Joseph Pietrowicz]

I'm using opengrads V 2.0.a7.oga.3 and opening two files, gfs and cmorph 3hr
precipitation estimates. I can open and use them one at a time just fine.
But when I open them in as file 1 and file 2, I can't display variables from
 both data sets. I think it has to do with the time coordinate.

The GFS ctl data set has time as 

tdef 9 linear 00Z27jan2010 3hr

While the cmorph time in the ctl file is given as

TDEF 99000 LINEAR  0z01dec2002 3hr

and the cmoph *ctl file uses the template option.

If I open both files, say the GFS first, I can display any of the GFS
variables for any of the GFS time steps just fine. However, I can't display
any of the cmorph data. I believe that it has something to do with setting time.

For example in the GFS
set t 1
d tmp2m

will give me the results properly.
In the cmorph file time step 20920 is the same time as time step 1 in the
GFS data set. Then I enter the command to display cmorph data.

d cpc.2

and I get a message that 'all undefined values'
And the time information for cmorph is correct, 'T= 20920 20920'

Also the GFS data set id grib2, while the cmorph is binary.

What do I need to do in order to work witht both data sets?

Thanks,

Joe Pietrowicz