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

Wed Dec 8 07:26:28 EST 2021

I am using set mpdset hires.  That maskout line 'd
maskout(t2m,landseamask)' looks like the best option, but is there any easy
way to define landseamask?  I have been using basemap.gs because it was a
prebuilt script to mask out the oceans.

Jeff C

On Tue, Dec 7, 2021 at 11:42 PM Jeff Duda <jeffduda319 at gmail.com> wrote:

> 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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