Re: WRF NMM geography

Hello
when i run it , i found the following error

warning:tmXBMinorLengthF is not a valid resource in
ahmed_contour.PlotManager at this time
warning:NhlGetValues:Error retrieving tmXBMinorLengthF
fatal:Execute: Error occurred at or near line 11036 in file
$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl

fatal:Execute: Error occurred at or near line 105 in file plot.ncl
thanks

On Sun, Apr 24, 2011 at 6:53 PM, David Brown <dbrown@ucar.edu> wrote:

> Hi Ahmed,
> I am attaching a revised version of your script that plots the data twice:
> first using the coordinate arrays to project the data into a regular lat-lon
> projection, and second in its native projection, which happens to be a
> rotated lat-lon projection. I modified some of the contour settings to
> highlight the alignment of the data to the map. Here are some things to
> note:
> 1) You will get incorrect results if you set tfDoNDCOverlay True if you
> have not matched the map projection settings to the actual projection of the
> data.
> 2) tfDoNDCOverlay should be set for the contour plot and not for the map
> plot.
> 3) You should not use the min/max latitude and longitude values when using
> the "corners" map limit mode unless you know the data is in a regular
> lat/lon projection. As your dataset illustrates, the corner points are not
> always the minimum and maximum coordinate values.
> 4) Your data file does contain metadata with information about the
> projection, but it is not necessarily obvious. Even though you have acquired
> it as NetCDF data, some of the information it contains is based on the same
> tables used for GRIB. In particular the global attribute MAP_PROJ is set to
> 203. This number indicates that the data uses the
> "Arakawa semi-staggered E-grid on rotated latitude/longitude grid-point
> array (2-dimensional)", as indicated in Table 6 of the GRIB 1 specification
> at http://www.nco.ncep.noaa.gov/pmb/docs/on388/table6.html. Since it is a
> rotated lat/lon grid you need to set the NCL map projection resources
> mpCenterLonF and mpCenterLatF correctly to match the projection of the data.
> These values also appear to be contained in the global metadata as CEN_LAT
> and CEN_LON. The second frame of the revised script uses this information to
> match the map projection fairly reasonably to the pre-projected data.
> -dave
>
>
>
>
>
>
>
>
> On Apr 24, 2011, at 5:58 AM, ahmed lasheen wrote:
>
> > Hello
> > I am trying to draw the output of the geogrid.exe , but a portion of the
> plot doesnot appear in the east of the map.
> > i have attached the NCL script and the nc file .
> > thanks in advance
> >
> > --
> > ===============
> > Ahmed Lasheen
> > Junior researcher at Cairo Numerical Weather Prediction Center (CNWP)
> > ===============
> >
> > <plot.ncl><geo_nmm.d01.nc
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>
>

-- 
===============
Ahmed Lasheen
Junior researcher at Cairo Numerical Weather Prediction Center (CNWPC)
Egyptian Meteorological Authority(EMA)
Cairo,Egypt
===============

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Received on Sun Apr 24 12:31:39 2011