[gradsusr] smoothed shadings in GRADS

[Lyndon Mark Olaguera]

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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