Re: [las_users] Regridding curvilinear using map file

Hi Anton,
In the documentation on configuring data with curvilinear grids, there's just one thing you've missed. In the section "Configuring LAS to Regrid Curvilinear Datato Rectilinrar Grids" there is shown a piece of the xml to include; a <ui> element Regrid_Curv_Rect. That'll put a constraint over on the left-hand side of the UI to give the user theoption to regrid.

The map file should also help with getting the correct subset for native curvilinear plots. We have seen some of the kind of behavior you describe and are working to improve it.

Ansley

From: Anton Yoel Buenavista <tmsbayd@xxxxxxxxxx>
To: oar.pmel.las_users@xxxxxxxx
Sent: Wed, Oct 27, 2010 11:13:41 GMT+00:00
Subject: [las_users] Regridding curvilinear using map file

Hi all,

I'm trying to regrid our curvilinear grids to rectilinear grids. I've followed the guide indicated in this page: http://ferret.pmel.noaa.gov/LAS/documentation/installer-documentation/adding-curvilinear-data/configuring-las-to-regrid-curvilinear-data-to-rectilinear-grids

Here are my properties in my dataset XML:

<datasets>
<xid-BjBKERpfKY name="October 27, 2010" url="" href="http://porl.nus.edu.sg:9080/thredds/dodsC/NcML/hydro_uncomm_27_10_2010.nc/">http://localhost:9080/thredds/dodsC/NcML/hydro_uncomm_27_10_2010.nc/">
     <properties>
      <ferret>
        <curvi_coord_lon>LON</curvi_coord_lon>
        <curvi_coord_lat>LAT</curvi_coord_lat>
        <lon_modulo>0</lon_modulo>
        <curv_lon_min>102.81</curv_lon_min>
        <curv_lon_max>104.57</curv_lon_max>
        <curv_lat_min>0.19093</curv_lat_min>
        <curv_lat_max>1.9865</curv_lat_max>
        <contour_style>raster</contour_style>
        <palette>rnb2</palette>
        <curvi_coord_mapvar>map</curvi_coord_mapvar>
        <curvi_coord_mapfile>Ferret/dsets/data/TMH/curv_map875x625.nc</curvi_coord_mapfile>
      </ferret>
     <properties>
    ...

However, I do not notice any noticeable change. Does the map file resolution need to be exactly the same as the curvilinear grid? Also, zooming in doesn't display the correct subset of the grid. So I'm assuming the map file wasn't read correctly, or I'm missing additional properties in the XML file.

--
Regards,
Anton Buenavista