[gradsusr] lats4d issues

[Matt Brewer]

Folks,
I am using lats4d to convert NCEP's NARR data (grib) to netCDF. It only kind of 
worked. This is what I type into the command line: 


lats4d -i narr-a_221_19790101_0000_000.sub -o narr2009.nc -ftype ctl -lon -160 
-90 -lat 25 65  -time 0z1jan2009 21z31dec2009 -mxtimes 2920 -levs 925mb -xvars 
ugrdprs vgrdprs ugrd10m vgrd10m msletmsl prmslmsl

This works fine except for one issue. It seems to be totally messing up the axis 
dimensions, causing data to be in incorrect lat/lon locations.Notice how I asked 
for data from 160W to 90W and 25N to 65N, so with the longitude, that is a span 
of 70 degrees, and for latitude, it is 40 degrees. So I should get back a 
geopot. height matrix of 121x211 (there are data points every 1/3rd degree). It 
seems, in matlab at least, that I get an array of 122x212. And so what happens 
is the first point on the second array actually gets saved in the 212th place in 
the first array, so the second line starts out with what is supose to be the 
second point in the array. Make sense? When I put the nc file into grads, it has 
similar issues as well....so something wierd is going on when I run the lats4d 
script....I just don't know what. So if anyone has any ideas of what is goin on, 
please help!!!

Matt



      
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