Satellite Gridding Problem

[Steve Guimond <guimond@xxxxxxxxxxxxx>]

Hello:
   I am having troubles plotting satellite derived rain rate data from
NASA.  When I plot the data, there are three distinct "swaths" that
repeat across the global domain.  I checked the values from the file and
they do not repeat, so it must be in the way I have set the grid for the
data.  I have attached the plot so you can see what I am referring to.
The data has 0.25 deg resolution with 1440x480 points (0-360 deg. E and
60N-60S).  The first grid box center is at (0.125 deg. E,59.875 deg. N).  
The code I used to make the plot is as follows:


define axis/x=0.125E:359.875W:0.25/units=deg lon
define axis/y=59.875N:59.875S:0.25/units=deg lat
define grid/x=lon/y=lat mygrid
file/var=rr/grid=mygrid test.dat               !reading in ASCII file
data to define grid
fill/levels=(0,25,3) rr

Thanks for any help

  
Stephen R. Guimond
Graduate Research Assistant
Center for Ocean-Atmospheric Prediction Studies