[gradsusr] How to make wind vectors smooth and clear

[Davide Sacchetti]

about thickness use 'set cthick 1', you area using set cthick 9 

about smoothing you could use smth9 (smooth with 9 points):
'd smth9(u);smth9(v)'

or try hxout stream

Cheers
Davide

On Tue, 2018-03-06 at 14:57 +0300, afwande juliet wrote:
> Dear users
> I am plotting biases in the Vertically Intergrated moisture flux
> between 850-200hPa and I plot winds at 500hPa. The vectors are not
> smooth and they are not clear and too thick
> How do I make them smoother and thinner but visible
> 
> These are the plot commands am using and attached is the sample plot
> 
> 'reinit'
> 'sdfopen /media/anyuola/data_backup1/OBJ4/ERA/interim_OND_dry_rg.nc'
> 'open /media/anyuola/external/GRELL/DRY/grell_ond_2010.ctl'
> 'open /media/anyuola/external/BML/DRY/bml_OND_MAM_dry_2010_2011.ctl'
> 'open /media/anyuola/external/KF/DRY/kf_OND_dry_2010.ctl'
> 'open /media/anyuola/external/KFT/DRY/kft_dry_2010_2011.ctl'
> 
> 'set dfile 2'
> 'define q2=ave(qvapor,t=1,t=92)'
> 'define u2=ave(u,t=1,t=92)'
> 'define v2=ave(v,t=1,t=92)'
> 'p850 = const(q2,850,-a)'
> 'define qu2=vint(p850,q2*u2,300)'
> 'define qv2=vint(p850,q2*v2,300)'
> 
> 
> 'set dfile 1'
> 'define q1=ave(q,t=1,t=92)'
> 'define u1=ave(u,t=1,t=92)'
> 'define v1=ave(v,t=1,t=92)'
> 'p850 = const(q1,850,-a)'
> 'define qu1=vint(p850,q2*u2,300)'
> 'define qv1=vint(p850,q2*v2,300)'
> 'define m1 = -hdivg(qu1,qv1)*1000'
> 
> ****differences
> 'define flxu=qu2-qu1'
> 'define flxv=qv2-qv1'
> 'define udiff=u2-u1'
> 'define vdiff=v2-v1'
> 
> ****plot
> 'set yflip on'
> 'set lon 16 75'
> 'set lat -18 24'
> 'run tppage 8
> 1'                                                                   
>               
> 'set xlint 10'
> 'set ylint 5'
> 'set mpdset hires'
> *'set gxout shaded'
> 'set clab on'
> 'set grid off'
> 'set grads off'
> 'set csmooth on'
> 'set clopts 1 3 .14'
> 'set ccolor 1'
> 'set display color white'
> 'c'
> ***define horizontal Diveregence at this point
> 
> 'set clevs   -2.5 -2 -1.5 -1 -0.5  0 0.5 1 1.5 2 2.5'
> 'run red-blue.gs'
> *'green_red.gs'
> 'set gxout shaded'
> 'set csmooth on'
> 'd -hdivg(qu2,qv2)*1000'
> 
> 
> 'cbar'
> 
> 'set gxout vector'
> 'set cthick 1 '
> 'set ccols 1'
> 'set cthick 9'
> 'set clopts 1 1 0.1'
> 'set lev 500'
> *'set t 1 90'
> 'set arrscl 0.25'
> 'd skip(u,8);skip(v,8)'
> *'d mag(u1,v1)'
> 'set clab off'
> 'draw title  a) GRELL'
> 'close 1'
> 
> 
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