[gradsusr] smoothed shadings in GRADS

[Andrew Friedman]

This is just a guess, but maybe it is because you can’t smooth across missing values?
What if you set your missing values to zero? Does that change anything?

> On Dec 27, 2017, at 10:18 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
> 
> I'm not sure what to say then. Perhaps the smth9() function only works on horizontal fields (that's all I've ever used it on)?
> 
> Perhaps something very clever will be needed. Or you might have to perform the smoothing in an alternate data set outside of grads. Or you may be out of luck on this option. I'm not sure. Hopefully someone else can chime in with better advice.
> 
> Good luck!
> 
> Jeff
> 
> On Wed, Dec 27, 2017 at 11:03 PM, Lyndon Mark Olaguera <olagueralyndonmark429 at gmail.com> wrote:
> Dear Sir Jeff,
> 
> I also tried your suggestion but the result does not change.
> 
> 'd smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(-c*100))))))))'
> 
> I am only shading the significant areas via the maskout() function. Maybe, this is the reason why Im not getting a smooth shading?
> 
> Sincerely,
> 
> Lyndon Mark P. Olaguera
> PhD Student 
> Laboratory of Climatology
> Department of Geography
> Faculty of Urban Environmental Science
> Minami-Osawa Campus
> Tokyo Metropolitan University
> Hachioji Tokyo, Japan
> 
> 
> On Thu, Dec 28, 2017 at 2:44 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
> use the smth9() function. Nest several iterations of it to increase the smoothing level.
> 
> Jeff Duda
> 
> On Wed, Dec 27, 2017 at 9:41 PM, Lyndon Mark Olaguera <olagueralyndonmark429 at gmail.com> wrote:
> Hi Bill,
> 
> I tried this but the result is still the same.
> 
> Sincerely,
> 
> Lyndon Mark P. Olaguera
> PhD Student 
> Laboratory of Climatology
> Department of Geography
> Faculty of Urban Environmental Science
> Minami-Osawa Campus
> Tokyo Metropolitan University
> Hachioji Tokyo, Japan
> 
> 
> On Wed, Dec 27, 2017 at 9:16 PM, Bill Reilly <bill_reilly at compuserve.com> wrote:
> Before displaying the shading use the following:
> 
> 'set csmooth on'
> --
> 
> Bill Reilly
> 
> 
> (+34) 686-110-748
> 
> 
> 
> bill at passageweather.com
> www.passageweather.com
> 
> 
> 
> bill at brwebworks.com
> www.brwebworks.com
>  
> 
> 
> On 27/12/2017 05:48, Lyndon Mark Olaguera wrote:
>> Dear GrADS experts,
>> 
>> I am trying to plot a difference plot.In particular, a height-longitude cross section attached in this email. I am shading only the significant areas. 
>> 
>> Is there a way to smoothen the shading in the plot?Currently, the shading appears like "blocks".
>> Here's a part of my script.
>> 
>> 'define sig=maskout(ttest1,ttest1-3.055)'
>> 'set lon 40 180'
>> 'define b=maskout(num,sig)'
>> 'set lev 1000 100'
>> 'set lon 40 180'
>> 'define c=ave(b,lat=0,lat=18)'
>> 
>> 'set display color white'
>> 'c'
>> 'set parea 1.5 10.5 1.5 8'
>> 'set lon 40 180'
>> 'set grads off'
>> 'set grid off'
>> 'set xlopts 1 5 0.2'
>> 'set ylopts 1 5 0.2'
>> 'set xlint 20'
>> 'set font 1'
>> 
>> 'set gxout shaded'
>> 'set lev 1000 100'
>> 'set y 1'
>> 'set zlog on'
>> 'color -8 8 1 -gxout shaded -kind gray->gray'
>> 'd -c*100'
>> 
>> I'll appreciate any help.
>> 
>> Sincerely,
>> 
>> 
>> Lyndon Mark P. Olaguera
>> PhD Student 
>> Laboratory of Climatology
>> Department of Geography
>> Faculty of Urban Environmental Science
>> Minami-Osawa Campus
>> Tokyo Metropolitan University
>> Hachioji Tokyo, Japan
>> 
>> 
>> 
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> -- 
> Jeff Duda
> Post-doctoral research fellow
> University of Oklahoma School of Meteorology
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> -- 
> Jeff Duda
> Post-doctoral research fellow
> University of Oklahoma School of Meteorology
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