[gradsusr] Trying to plot values (grid? ascii?) of weasdsfc onto map.

[Stephen McMillan]

I'm not able to view the first for whatever reason, but the one from second
link does not appear to be from gxout grid.  Rather, it looks like it was
done using the method ('draw string...') mentioned in my first response.  I
would say they were based on station data, possibly used as the basis for
the shaded contours, giving it a more irregular appearance.

Bottom line...which do you want?  Regularly-spaced values based on a grid,
or irregular values based on station locations?  It can be done either way.

Stephen Mc

On Fri, Sep 25, 2015 at 10:24 AM, Christopher Gilroy <chris.gilroy at gmail.com
> wrote:

> I hear you, I've done that too. Can you take a peak at either of the
> images I linked to? With your knowledge of grads, would you say they are
> plotting those snowfall numbers using gxout grid? It just seems so
> different than what a gridded plot does, even with skipping.
>
> On Fri, Sep 25, 2015 at 10:21 AM, Stephen McMillan <
> smcmillan at planalytics.com> wrote:
>
>> Yes, Chris, what you said makes sense.  If all you want to do is thin out
>> the number displays from a grid, then use "skip" (and maskout too if you
>> want to not plot the values over some area such as over water).  For
>> example:
>>
>> 'd skip(maskout(t2m,landsfc-0.5),2)'
>>
>> displays every other grid value in both x- and y-direction over land
>> areas only, where "t2m" was my temperature variable.
>>
>> Stephen
>>
>> On Fri, Sep 25, 2015 at 9:59 AM, Christopher Gilroy <
>> chris.gilroy at gmail.com> wrote:
>>
>>> I do want it to draw snowfall amounts, but like in the two images, not
>>> "griddy". If you look at,
>>> http://blog.chron.com/weather/wp-content/blogs.dir/2579/files/2014/01/gfs_6hr_snow_acc_se_19.png
>>> that doesn't appear to be drawing those numbers based on a grid at all.
>>> They are all scattered about on the map with no real "grid" structure to
>>> them. The only way I know how to "control" the frequency (perhaps
>>> "stepping" might be a better word?) of the drawing of values would really
>>> be to maskout coupled with re-gridding so it doesn't put a number on every
>>> possible area that weasdsfc has a value for is. If that makes sense?
>>>
>>> On Fri, Sep 25, 2015 at 9:53 AM, Stephen McMillan <
>>> smcmillan at planalytics.com> wrote:
>>>
>>>> Hello Chris,
>>>>
>>>> If you don't want to display all the grid values, then you can use
>>>> 'draw string...' using the coordinates of whatever stations or locations
>>>> you want displayed on top of the shaded contours.  See
>>>> http://www.iges.org/grads/gadoc/gradcomddrawstring.html
>>>>
>>>> Stephen McMillan
>>>>
>>>> On Fri, Sep 25, 2015 at 8:55 AM, Christopher Gilroy <
>>>> chris.gilroy at gmail.com> wrote:
>>>>
>>>>> I'm trying to plot something like this:
>>>>> http://i60.tinypic.com/2v9voe0.jpg (WXBell has the same basic setup,
>>>>> http://blog.chron.com/weather/wp-content/blogs.dir/2579/files/2014/01/gfs_6hr_snow_acc_se_19.png)
>>>>> with the inch's plotting on-top of the shaded area but the only way I know
>>>>> how to display "values" like that is with gxout grid, which then makes the
>>>>> numbers plot in grids (obviously) and unless I'm missing something with
>>>>> options I don't see a way to make it output as "loose" as theirs are,
>>>>> instead of literally in a "grid" (square box) format.
>>>>>
>>>>> I'm currently simply doing:
>>>>>
>>>>> 'set gxout grid'
>>>>> 'set gridln off'
>>>>> 'set dignum 1'
>>>>> 'set digsiz 0.05'
>>>>> 'd re(maskout(weasdsfc, weasdsfc-3), 0.25)'
>>>>>
>>>>> Which, you can image it will output tons of numbers all over, making
>>>>> it completely illegible. Any clue on how to do something like the above two
>>>>> images?
>>>>>
>>>>> --
>>>>> -Chris A. Gilroy
>>>>>
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>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>
>>>>>
>>>>
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>>>>
>>>
>>>
>>> --
>>> -Chris A. Gilroy
>>>
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>>>
>>
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>
>
> --
> -Chris A. Gilroy
>
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