[gradsusr] Plot data text in a grid instead of random

Tue Dec 7 23:37:45 EST 2021

I agree with setting up a mask using maskout or 'if' (depending on grads
version). The trick is how to define your land-sea mask. But once you have
decided what you want to use, it should be as simple as the display command
Davide suggested, i.e.,

'set gxout grid'
'd maskout(t2m,landseamask)'

I don't know what basemap.gs does, but the built-in geopolitical boundaries
look pretty good at that scale. You're using 'set mpdset hires' right?

Jeff Duda

On Tue, Dec 7, 2021 at 8:51 PM Jeff Chabot <jsc219 at gmail.com> wrote:

> Running basemap.gs before means I have grid plots over the entire ocean
> as seen here:
>
> https://jeffsweatherservice.com/grads/temp_US_2_before.png
>
> I prefer the look running basemap.gs after, I'm just trying to fix the
> cutoff plots by the oceans, for example near San Francisco and southern
> Louisiana as seen here:
>
> https://jeffsweatherservice.com/grads/temp_US_2_after.png
>
> Basically, I am trying to prevent the text cutoff without showing the
> entire grid over the ocean.  Maybe it's not possible in GrADS.
>
> As for the other issue, I'll just use set gxout contour without labels.
>
> Thanks again!  I was able to use your maskout example nicely with precip
> accum, btw!
>
>
>
>
>
> On Mon, Dec 6, 2021 at 9:58 AM Davide Sacchetti <
> davide.sacchetti at arpal.liguria.it> wrote:
>
>> about second question: run basemap.gs before t2m (or display t2m again
>> after basemap)
>>
>> about first question use maskout, eg.:
>> d maskout(t2m,t2m-32) displays only t2m>32
>> d maskout(t2m,33-t2m) displays only t2m<33
>> you can combine both:
>> d maskout(maskout(t2m,33-t2m),t2m-32)
>> (I haven't tried this command ... but the idea could be this)
>>
>> Davide
>>
>> *Dott. Davide Sacchetti*
>>
>>
>>
>>
>> *Dipartimento Stato dell’Ambiente e Tutela dai Rischi NaturaliU.O. Clima
>> Meteo IdroViale Brigate Partigiane 2, 16129 Genova (I)tel: +39
>> 0106437535mail: davide.sacchetti at arpal.liguria.it
>> <mauro.damonte at arpal.liguria.it>
>> web: https://www.arpal.liguria.it/homepage/meteo.html
>> <http://www.meteoliguria.it/>*
>>
>>
>> * Da: * Jeff Chabot <jsc219 at gmail.com>
>> * A: * GrADS Users Forum <gradsusr at gradsusr.org>
>> * Inviato: * 06/12/2021 15:33
>> * Oggetto: * Re: [gradsusr] Plot data text in a grid instead of random
>>
>> Duh!  That was a dumb question on my part, and I apologize.  I have set
>> ccolor working.  Two more better questions however.
>>
>> Is there any way to do a set gxout grid at just 32 degrees F?
>>
>> I tried the following with set gxout grid:
>> 'set gxout grid'
>> 'set gridln off'
>> 'set cint 1'
>> 'set cmin 32'
>> 'set cmax 32'
>> 'set ccolor 4'
>> 'set digsiz 0.1'
>> 'display skip(t2m,12,12)'
>>
>> *where t2m = ((tmp2m - 273.15) * 9 / 5) + 32
>>
>> The result is the full grid.
>>
>> My other question is probably much more complicated.  I am using
>> basemap.gs
>> <https://urlsand.esvalabs.com/?u=http%3A%2F%2Fbasemap.gs&e=7312d17f&h=398c37dd&f=y&p=n>
>> to mask out the oceans.  It is cropping the grid numbers by the oceans as
>> seen here: http://jeffsweatherservice.com/grads/temp_US_2.png
>> <https://urlsand.esvalabs.com/?u=http%3A%2F%2Fjeffsweatherservice.com%2Fgrads%2Ftemp_US_2.png&e=7312d17f&h=78ddcde1&f=y&p=n>
>> north of San Francisco and in southern Louisiana.  Is there a workaround
>> for that issue?
>>
>> 'run 'basemap.gs
>> <https://urlsand.esvalabs.com/?u=http%3A%2F%2Fbasemap.gs&e=7312d17f&h=398c37dd&f=y&p=n>
>> o 202 1 H' (run after the lines above).
>>
>> Thanks again!
>>
>> Jeff C
>>
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Dec 6, 2021 at 4:50 AM Davide Sacchetti <
>> davide.sacchetti at arpal.liguria.it> wrote:
>>
>> great!
>> set ccolor color_number
>> bye bye
>> Davide
>>
>> *Dott. Davide Sacchetti*
>>
>>
>>
>>
>> *Dipartimento Stato dell’Ambiente e Tutela dai Rischi NaturaliU.O. Clima
>> Meteo IdroViale Brigate Partigiane 2, 16129 Genova (I)tel: +39
>> 0106437535mail: davide.sacchetti at arpal.liguria.it
>> <mauro.damonte at arpal.liguria.it>
>> web: https://www.arpal.liguria.it/homepage/meteo.html
>> <https://urlsand.esvalabs.com/?u=http%3A%2F%2Fwww.meteoliguria.it%2F&e=7312d17f&h=8b11d4a6&f=y&p=n>*
>>
>>
>> * Da: * Jeff Chabot <jsc219 at gmail.com>
>> * A: * GrADS Users Forum <gradsusr at gradsusr.org>
>> * Inviato: * 06/12/2021 6:52
>> * Oggetto: * Re: [gradsusr] Plot data text in a grid instead of random
>>
>> The following worked very well:
>>
>> 'set gxout grid'
>> 'set gridln off'
>> 'display skip(t2m,10,10)'
>>
>> Thanks guys!
>>
>> Can you control the color of those numbers?  I can only get them in white.
>>
>> Sincerely,
>>
>> Jeff C
>>
>> On Thu, Dec 2, 2021 at 12:23 PM Jeff Duda <jeffduda319 at gmail.com> wrote:
>>
>> You can also use a loop with 'draw string' to achieve this.
>>
>> Jeff Duda
>>
>> On Thu, Dec 2, 2021 at 9:28 AM Stephen McMillan <
>> smcmillan at planalytics.com> wrote:
>>
>> In addition to Davide's suggestion, you can use:
>>
>> 'set gridln off' to hide the grid lines
>>
>> Use "skip" function to skip plotting every other, every third, etc. grid
>> value
>>
>> Stephen Mc
>>
>>
>> On Thu, Dec 2, 2021 at 10:17 AM Jeff Chabot <jsc219 at gmail.com> wrote:
>>
>> Hi GrADS Users,
>>
>> Does anyone know if it is possible to plot data text in a grid pattern
>> instead of random plots in GrADS?
>>
>> For example, this is the grid pattern that I would like to use:
>>
>>
>> https://www.tropicaltidbits.com/analysis/models/gfs/2021120206/gfs_T2m_neus_1.png
>> <https://urlsand.esvalabs.com/?u=https%3A%2F%2Fwww.tropicaltidbits.com%2Fanalysis%2Fmodels%2Fgfs%2F2021120206%2Fgfs_T2m_neus_1.png&e=7312d17f&h=27bc95a0&f=y&p=n>
>>
>> Instead, I am currently showing numbers randomly attached to a contour
>> line:
>>
>> https://jeffsweatherservice.com/grads/hrrr/temp_NE_1.png
>> <https://urlsand.esvalabs.com/?u=https%3A%2F%2Fjeffsweatherservice.com%2Fgrads%2Fhrrr%2Ftemp_NE_1.png&e=7312d17f&h=f81a2820&f=y&p=n>
>>
>> Thanks,
>>
>> Jeff C
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>>
>>
>> --
>> Jeff Duda, Research Scientist
>> University of Colorado Boulder
>> Cooperative Institute for Research in Environmental Sciences
>> NOAA/OAR/ESRL/Global Systems Laboratory
>> Boulder, CO
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-- 
Jeff Duda, Research Scientist
University of Colorado Boulder
Cooperative Institute for Research in Environmental Sciences
NOAA/OAR/ESRL/Global Systems Laboratory
Boulder, CO
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