[ncl-talk] Is my gsn_add_polyline usage wrong?

[Rick Brownrigg]

Hi,

Try replacing:

draw(map)
draw(wks)

with

draw(map)
frame(wks)

It then works for me.

Rick


On Thu, Mar 5, 2020 at 5:14 AM Tomoko Koyama via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Hello.
>
> I like to show a domain area a masked Lambert Conformal map.
> But the following simple script doesn’t work.
>
> Could you tell me what I miss?
>
> Thank you,
> Tomoko
>
> ;================================================;
> begin
>   wks = gsn_open_wks("X11","map_NSI")
> ;
> ; Set up some map resources.
> ;
>   res                       = True
>   res at gsnFrame              = False
>   res at gsnDraw                = False
>   res at gsnMaximize          = True
>
>   res at mpProjection          = "LambertConformal"
>   res at gsnMaskLambertConformal = True
>
>   res at mpLimitMode           = "LatLon"
>   res at mpMinLonF             =  90
>   res at mpMaxLonF            =  180
>   res at mpMinLatF              =  68
>   res at mpMaxLatF             =  82
>
>   res at tiMainString = "NSI Domain Area"
>   map = gsn_csm_map(wks,res)
>
> ;************************************************
> ; create points for box
> ;************************************************
>  ypts = (/ 80.0,  80.0, 70.0,  70.0, 80.0/)
>  xpts = (/126.0, 158.0,158.0, 126.0,126.0/)
> ;************************************************
> ; add the box
> ;************************************************
>   resp                  = True                      ; polyline mods desired
>
>   dum = new(4,graphic)
>
>   do i = 0 , 3
>     dum(i) = gsn_add_polyline(wks,map,xpts(i:i+1),ypts(i:i+1),resp)
>   end do
>
>   draw(map)
>   draw(wks)
> end
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