[ncl-talk] limit map region for Lambert Conformal projection

[Dennis Shea]

NARR are Lambert Conformat:

*http://www.ncl.ucar.edu/Applications/narr.shtml*
<http://www.ncl.ucar.edu/Applications/narr.shtml>
ncl_3.ncl

See plot section
===
WRF projection information  is contained within the file attributes

   fwrf = addfile("wrf...nc","r")
   ...
Something like:

res at mpLambertParallel1F   = fwrf->Latin1
res at mpLambertParallel2F   = fwrf->Latin2
res at mpLambertMeridianF    = fwrf->LoV

========================================

  res at gsnAddCyclic           = False              ; regional data

  res at mpLimitMode            = "Corners"          ; choose range of map
  res at mpLeftCornerLatF       = lat2d(0,0)
  res at mpLeftCornerLonF       = lon2d(0,0)
  res at mpRightCornerLatF      = lat2d(nlat-1,mlon-1)
  res at mpRightCornerLonF      = lon2d(nlat-1,mlon-1)
  res at tfDoNDCOverlay         = True
  res at mpProjection           = "LambertConformal"
  res at mpLambertParallel1F    = lat2d at mpLambertParallel1F
  res at mpLambertParallel2F    = lat2d at mpLambertParallel2F
  res at mpLambertMeridianF     = lat2d at mpLambertMeridianF


On Mon, Jan 27, 2020 at 2:02 PM Zhifeng Yang via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Hi all,
> I have WRF output files with Lambert Conformal projection. When I plot
> images with contour on maps, I tried to limit the plot over a specific
> region, not the whole domain. I tried the following
>    res at mpLimitMode                  = "latlon"
>    res at mpMinLatF                    = minlat
>    res at mpMaxLatF                    = maxlat
>    res at mpMinLonF                    = minlon
>    res at mpMaxLonF                    = maxlon
>
> However, it seems it does not work. Do you have any ideas on it? Thank you!
>
> Best,
> Zhifeng
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