set kml <-img | -ln> fnameroot
Sets the filename root and output options for Keyhole Markup Language (KML) output.
fnameroot
Output filename root -- GrADS will append ".kml" and ".tif" to the end as appropriate
The -img
option (the default) is used for writing out an image file and a complementary KML file :
fnameroot.tif
A TIFF image file with a pixel for each gridbox in the domain (default is grads.tif
)
fnameroot.kml
A text file in the Keyhole Markup Language (KML) that contains
the georeferencing information for the TIFF image (default is grads.kml
)
The -ln
option is used for writing out contour lines in KML format. Only one file is written:
fnameroot.kml
A text file in the KML format that contains the color, thickness, and
georeferencing information for the contour lines (default is grads.kml
)
This command is available in version 2.0.a5 or later.
The -ln
option for writing out contours in KML format is available in version 2.0.a9 or later. In order to use the -img
option, GrADS must be linked with the TIFF and GeoTIFF libraries. Check the output from 'q config' for the message "GeoTIFF and KML/TIFF output ENABLED". The -ln
option does not depend on the TIFF library, and is always enabled.
This command is used in conjunction with the set gxout kml
command which sets the graphics output type; the display
command will then create the output file(s) instead of drawing a plot. The display expression must be a
2-dimensional grid that varies in X and Y (longitude and latitude), and the projection must be latlon.
The files fnameroot.tif
and fnameroot.kml
will be replaced if they exist. If
fnameroot
provided by the user ends in ".kml", GrADS will not append an additional ".kml", and will change the extension to ".tif" for the image file (if necessary).
The output in KML format is intended for use with GIS tools such as Google Earth. Please note that Google Earth prefers longitudes to range from -180 to 180 instead of 0 to 360.
clear set gxout kml set kml myimg d var clear set gxout kml set kml -ln mycntr d var