Heiko,
1)
the rasterization of a contour plot is separate from the gsn templates. those
templates just invoke stuff going on behind the scenes.
2) The default mechanism is for the raster routine to determine what your grid
is (it can tell the size) and determine the value of the raster cell by the
center value of the grid cell. It places the raster color in the center and
draws the rectangular box out to fill the grid cell.
3) there is a new mechanism that allows the user to draw raster cells by the
boundaries of the cell which will take into account non-rectangular cells. this
is primarily used for curvilinear or other special grids.
sylvia
******************************************************
Sylvia Murphy EML: murphys AT ucar.edu
NCAR CGD/CAS PHN: 303-497-1720
1850 Table Mesa Dr FAX: 303-497-1333
Boulder, CO 80305
WEB: http://www.cgd.ucar.edu/csm/support/
http://www.cgd.ucar.edu/csm/support/CSM_Graphics/
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