[ncl-talk] extra (echo) lines on plots

[Alison Bridger]

I am using gsn_csm_xy to make a fairly simple plot, embedded in a loop. The
loop is over times in the output from a WRF run (it = 1,6 in the attached
example).

The quantity plotted is rain (RAINNC) so does not show up right away BUT -
as soon as it starts plotting, I get an "echo" of the previous hour's line
plot. Hence - 2 lines per plot, but should only be one.

I feel like I am missing something - but can't think where to start on the
FAQ or the NCL pages.

Attached = code (xx.ncl), sample output (WEplt.ps).

The code reads a "standard" wrfout file - hope you have one archived!

Thanks

-- 

                 Alison F.C. Bridger
                  Professor & Chair

    Department of Meteorology and Climate Science

    San Jose State University      tel  408.924.5206
    One Washington Square          fax  408.924.5191
    San Jose, CA 95192-0104

             email:   Alison.Bridger at sjsu.edu

       *Global CO2 levels...400 ppm and still rising...happy?*


                 www.sjsu.edu/meteorology <http://www.met.sjsu.edu>
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