[ncl-talk] same data can get different dots when they are plotted in top or bottom

[Rick Brownrigg]

HI Tao,

Apologies for the delay in response. I started to look into this, but do
not have an answer and I got busy elsewhere. I still don't have an answer,
nor more importantly a fix or work-around. I speculate it has to do with
where and how the stipple pattern is mapped to the page, and that slightly
adjusting the positioning of the maps would reveal other differences.

You might consider using a solid-fill color that is very nearly
transparent, rather that a stipple pattern.

Hope that helps...
Rick


On Wed, May 1, 2019 at 12:53 PM Tao Zhang <tao.zhang at noaa.gov> wrote:

> Hi,
>
> When I use NCL to plot significance area, the same data can get
> different dots (see Northern Montana for example)
>
> when they are plotted in top or bottom.
>
>   see below for key sentences and attached plot.
>   Any comments?
>
>   Thanks,
>
>   Tao
>
>
> ;;;;;;;;;;;;;;;;;;;;;;;
> res at vpHeightF = 0.40
> res at vpWidthF = 0.70
>
> res at vpXF = 0.107192
> ;res at vpYF = 0.917978
> res at vpYF = 0.957978
>
> ;res at gsnCenterStringFontHeightF = 0.03
> ;res at gsnCenterString= "T2m, EP El Nino"
>      plots(0)     = gsn_csm_contour_map(wks, diff_tref, res )
>      abc            = gsn_csm_contour(wks,sigt2mnew,restip) ;make dots plot
>      overlay(plots(0),abc)
>      delete(abc)
>
>      draw(plots(0))
>
> ;
> res at vpHeightF = 0.40
> res at vpWidthF = 0.70
>
> res at vpXF = 0.107192
> res at vpYF = 0.544645
>
> ;res at gsnCenterString= "T2m, CP El Nino"
>      plots(2)     = gsn_csm_contour_map(wks, diff_tref, res )
>      abc            = gsn_csm_contour(wks,sigt2mnew,restip) ;make dots plot
>      overlay(plots(2),abc)
>      delete(abc)
>
>       draw(plots(2))
> ;
>
>
>
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