shade colors in color-shaded plan view

[joleenf]

Hi,

Is there any way to set "Shade Colors" from a script when using the Color-Shaded Plan View display type?

Thanks,
Joleen

[bobc]

Hi Joleen -

To shade colors, you can run:

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layer.getGridDisplay().setTextureEnable(0)

... as part of a script:

Code: Select all

# setting up dictionary.  note filename may have to change once the 02/09/15 06Z is no longer in the catalog
params = dict(
    filename = 'http://thredds.ucar.edu/thredds/dodsC/grib/NCEP/GFS/CONUS_80km/GFS_CONUS_80km_20150209_0600.grib1/GC',
    time = 0,
    field = 'Pressure_reduced_to_MSL_msl',
    )

# pulling in data
mslp = loadGrid(**params)

# build window and display data
panel = buildWindow()
layer = panel[0].createLayer('Color-Shaded Plan View',mslp)

# shade colors.  note that checkbox in Layer Controls won't change.  set to (1) to turn off shading
layer.getGridDisplay().setTextureEnable(0)

Note that the checkbox for Shade Colors won't change in the Layer Controls. For completeness, you can also change the Mode and Point Size items through a script:
Mode (change to points, won't be reflected in the Layer Controls):

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from ucar.visad.display import Grid2DDisplayable
solidMode = Grid2DDisplayable.POLYGON_FILL
meshMode  = Grid2DDisplayable.POLYGON_LINE
pointMode = Grid2DDisplayable.POLYGON_POINT
layer.setPolygonMode(pointMode)
layer.getPlanDisplay().setPolygonMode(pointMode)

You can also change the point size (won't be reflected in the Layer Controls):

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layer.setPointSize(1)
# enter any numerical value after setPointSize

Thanks -
Bob Carp