[gradsusr] Getting Transparent/user defined color kml poly files

itesh dash itesh at rimes.int
Thu Jun 16 22:26:12 EDT 2016


Dear Bernd,

Thanks. Let me try this. I will get back on this.

Regards,
Itesh

On Thu, Jun 16, 2016 at 6:04 PM, Becker, Bernd <
bernd.becker at metoffice.gov.uk> wrote:

> Itesh,
>
>
>
> from an old piece of grads code, try this (untested).
>
>
>
> The lines below  produce contoured areas with symbols
>
> so “it looks like” a transparency plot, which still makes sense when you
> over-plot in
>
> certain areas (see attached example).
>
>
>
> thresh=5
>
> diff=climate-case_study    # you need to define your variable to plot
> somehwere
>
> define dry= const(maskout(diff,diff-'thresh'),2)'
>
> 'set grads off'
>
> 'set gxout contour'
>
> 'set warn off'
>
> 'set clopts 'colourdry' 3 1'
>
> 'set cstyle 1'
>
>
>
> 'set rgb 67 200  60  60'    # define any colour you like by RGB values
>
> colourdry=67
>
> 'set ccolor 'colourdry
>
> 'set clab off'
>
> 'set clevs 1'
>
> * define values 1 where you don't want to shade area
>
> * and draw one single contour in bespoke colour.
>
>
>
> 'd const(dry,1,-u)'
>
> * repeat!  Honestly, first time around it does not work.
>
> say 'set ccolor 'colourdry
>
> 'set ccolor 'colourdry
>
> 'set clab off'
>
> 'set clevs 1'
>
> 'd const(dry,1,-u)'
>
>
>
> *From:* gradsusr-bounces at gradsusr.org [mailto:
> gradsusr-bounces at gradsusr.org] *On Behalf Of *itesh dash
> *Sent:* 16 June 2016 10:47
> *To:* GrADS Users Forum
> *Subject:* [gradsusr] Getting Transparent/user defined color kml poly
> files
>
>
>
> Dear All,
>
>
>
> I am trying to export the rainfall output  to kml file to be able to plot
> in google map. I could do it easily with the set gxout kml with the -poly
> option.
>
>
>
> The issue is, I want to set a transparent color or user defined color for
> the contours instead of the standard color. Though I can change the color
> codes manually, its not feasible for a large file. Can anybody help me on
> this.
>
>
>
> What I could fine from the forum is this
>
>
>
> http://gradsusr.org/pipermail/gradsusr/2011-September/031100.html
>
>
>
> Which is not very clear how to set the transparency or use define color.
>
>
>
> Regards,
>
> Itesh
>
>
>
>
>
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>
>
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