[gradsusr] Combining two shaded variables.

[Stephen McMillan]

Jose, Stuart,

Jeff's recommendation for 2.1+ and the alpha channel is probably the best
way to go since you can control the transparency/opaqueness, but here's a
sample script if you don't have or don't want to upgrade.  Cloud clover
with precip overlay sample attached, along with script that created it.

Good luck!
Stephen Mc

On Wed, Aug 5, 2015 at 1:36 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:

> Upgrade to version 2.1+ and use the alpha channel when creating colors.
>
> Jeff
>
> On Wed, Aug 5, 2015 at 12:15 PM, Chorley Weather <
> weatherstu at chorleyweather.com> wrote:
>
>> On 05-08-2015 16:09, Stephen McMillan wrote:
>> > Stuart,
>> > 1.  Display first variable then save to an image file
>> > 2.  Clear screen, then display second variable
>> > 3.  Save to another file using first file as background (-b option)
>> > and specify an appropriate transparent color (-t option)
>> >
>> > Resulting saved map should be without the rough, pixelated edges
>> >
>> > Stephen Mc
>> >
>> > On Wed, Aug 5, 2015 at 10:04 AM, Chorley Weather
>> > <weatherstu at chorleyweather.com> wrote:
>> >
>> >> Hi guys,
>> >>
>> >> I have been trying to combine two shaded variables in one image,
>> >> for
>> >> example precip & cloud cover. I have tried the maskout function but
>> >> the
>> >> output looks to rough and pixelated. Can anybody suggest a better
>> >> way to
>> >> get a smoother result.
>> >>
>> >> Many thanks in advance
>> >> Stuart.
>> >>
>> >> --
>> >> Chief Forecaster & Owner
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>> >
>> >
>> > Links:
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>> Thanks Stephen, I will have a go at that cheers.
>> --
>> Chief Forecaster & Owner
>> _______________________________________________
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>
>
>
> --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
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