[gradsusr] Shapefiles drawing over each other

Sat Apr 25 08:00:32 EDT 2015

Please check the previous answer at: http://gradsusr.org/pipermail/gradsusr/2015-April/038251.html 

In your case, you have to re-construct your shapefile with a radial slice through the donut. Or use other tools.

Regards
Yaqiang

*************************************************
Dr. Yaqiang Wang
Chinese Academy of Meteorological Sciences (CAMS)
46, Zhong-Guan-Cun South Avenue
Beijing, 100081
China

yaqiang.wang at gmail.com

http://www.meteothinker.com
**************************************************

From: David Mocko
Date: 2015-04-25 04:24
To: gradsusr at gradsusr.org
Subject: [gradsusr] Shapefiles drawing over each other

Hello,

I'm trying to draw the U.S. Drought Monitor on 27 Jan 2004,
but I can't quite replicate this map using GrADS:
     http://droughtmonitor.unl.edu/data/pngs/20040127/20040127_conus_trd.png

I am using this shapefile available in the USDM archive:
     http://droughtmonitor.unl.edu/data/shapefiles_m/USDM_20040127_M.zip

What happens is that, depending on which order I draw the
individual polygons, some colors are overwritten by later
polygons that I draw.

If I draw the "yellow" drought category first, then the
yellow/light orange drought categories in Colorado are
overwritten with dark orange (grads_yellow-first.png).

If I draw the "red" drought category first, then the
light red/dark orange drought categories in Minnesota
are overwritten with light orange (grads_red-first.png).

I am attaching sample figures, as well as the GrADS scripts
that produce dthem.  Below, I list the result of "q shp" on
this shapefile, and my GrADS configuration.

Any help would be welcome,

David

---------
ga-> q shp USDM_20040127.shp

Shapefile Type=Polygon #Shapes=5 XBounds=-157.306:-88.7898 YBounds=19.1511:65.0444
0:  Polygon  parts=32  vertices=4022  XBounds=-157.306:-88.7898 
YBounds=19.1511:65.0444  ZBounds=0:0  MBounds=0:0
1:  Polygon  parts=8  vertices=2145  XBounds=-121.284:-89.1468 
YBounds=29.3411:49.3846  ZBounds=0:0  MBounds=0:0
2:  Polygon  parts=8  vertices=2057  XBounds=-120.725:-89.7628 
YBounds=30.1637:48.8752  ZBounds=0:0  MBounds=0:0
3:  Polygon  parts=8  vertices=1545  XBounds=-119.669:-91.0982 
YBounds=30.9017:48.4509  ZBounds=0:0  MBounds=0:0
4:  Polygon  parts=5  vertices=409  XBounds=-114.85:-102.183  YBounds=31.3319:47.3992 
  ZBounds=0:0  MBounds=0:0

---------
ga-> q config
Config: v2.1.a2.oga.2 little-endian readline grib2 netcdf hdf4-sds hdf5 
opendap-grids,stn athena geotiff shapefile cairo
Grid Analysis and Display System (GrADS) Version 2.1.a2.oga.2
Copyright (c) 1988-2013 by the Institute for Global Environment and Society (IGES)
This program is distributed WITHOUT ANY WARRANTY
See file COPYRIGHT for more information.

Built Wed Nov 12 22:59:49 EST 2014 for x86_64-unknown-linux-gnu

This version of GrADS has been configured with the following options:
   o Built on a LITTLE ENDIAN machine
   o Athena Widget GUI ENABLED
   o Command line editing ENABLED
       http://tiswww.case.edu/php/chet/readline/rltop.html
   o GRIB2 interface ENABLED
       http://www.ijg.org
       http://www.ece.uvic.ca/~mdadams/jasper
       http://www.nco.ncep.noaa.gov/pmb/codes/GRIB2
       g2clib-1.4.0
   o NetCDF interface ENABLED
       http://www.unidata.ucar.edu/software/netcdf
       netcdf 4.3.2 of May  1 2014 23:24:51 $
   o OPeNDAP gridded data interface ENABLED
   o OPeNDAP station data interface ENABLED
       http://iges.org/grads/gadoc/supplibs.html
       libgadap 2.0.oga.1
   o HDF4 and HDF5 interfaces ENABLED
       http://hdfgroup.org
       HDF 4.2r5
       HDF5 1.8.12
   o GeoTIFF and KML/TIFF output ENABLED
       http://www.libtiff.org
       http://geotiff.osgeo.org
   o KML contour output ENABLED
   o Shapefile interface ENABLED
       http://shapelib.maptools.org
   o Cairo graphics interface ENABLED
       http://cairographics.org
       http://cgit.freedesktop.org/pixman
       http://www.freetype.org/index2.html
       http://www.freedesktop.org/wiki/Software/fontconfig
       Cairo 1.12.16
       Pixman 0.28.0
       Freetype 2.3.8
       Fontconfig 2.11.1

-- 
--------------------------------------------------------------------------
David M. Mocko, Building 33, Room G108                David.Mocko at nasa.gov
NASA Goddard Space Flight Center                     Voice: (301)-614-6222
Code 610.1, Greenbelt MD 20771                         Fax: (301)-614-6246
SAIC (Science Applications International Corporation)
with the Global Modeling and Assimilation Office
  and the Hydrological Sciences Laboratory
                         http://neptune.gsfc.nasa.gov/hsb/personnel/?dmocko
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