[gradsusr] streamline output as kml?

[Jennifer M Adams]

Hi, James —
I’m sorry to tell you that it is not possible to export streamlines or vectors directly into KML format in the same way that it is done with contour lines. On the bright side, your image export will look much less pixelated if you upgrade to version 2.1, which uses Cairo graphics which supports anti-aliasing.
—Jennifer


On Jul 28, 2016, at 5:40 PM, Darlow, JAMES W CIV NMFC_JTWC <james.darlow at navy.mil<mailto:james.darlow at navy.mil>> wrote:

Hello Gradsusr,
I am using v2.0.2...
I hope someone can help me output streamlines as a KML
(Rather than a TIF image and KML)
I need the smoother lines <LineString> and transparent background the kml provides, not the pixelated streamlines of a tiff.

I use the following now to get a streamline png with transparent background... but it is pixelated.
ga-> clear
ga-> set gxout stream
ga-> d vgrdsfc;ugrdsfc
ga-> printim test.png -t 0


When I use the following, only lines are generated. (If I try d vgrdsfc;ugrdsfc, nothing is generated.)
ga-> set gxout kml
ga-> set kml -ln test.kml
KML output file name:
test.kml (KML text file)
KML output type: contour lines
ga-> d vgrdsfc
Contouring: -20 to 25 interval 5
1242 contours written to KML file test.kml

I appreciate any suggestions... I am new to GRADS; examples are appreciated.


Thank you,
James Darlow
Joint Typhoon Warning Center







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--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University



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