Hi NCLers,
Are you supposed to be able to set gsnShadeLow and gsnShadeMid in the
same gsn_contour_shade call?
Here's a stripped down version of contour effects example 13:
803 challenger% cat coneff_13.ncl
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
begin
f = addfile ("uvt.nc", "r") ; add file
lat = f->lat ; get latitude
ind14S= ind(lat.eq.-1.395307) ; subscript index of
1.4S
u = f->U(0,:,ind14S,:) ; get u at 1.4S
wks = gsn_open_wks ("ps", "coneff" )
res = True
res@cnLevelSpacingF = 5.0
res@gsnDraw = False ; We're going to panel later, so don't
res@gsnFrame = False ; draw or advance frame.
plot = gsn_csm_pres_hgt(wks, u, res )
opt = True
opt@gsnShadeLow = "red"
; opt@gsnShadeMid = "yellow"
opt@gsnShadeHigh = "yellow"
plot = gsn_contour_shade(plot, -10.,-5, opt)
draw(plot)
end
804 challenger%
and it produces this plot:
so I would like the current white area to be yellow and the current
yellow area to be white
so I make the follow change (i.e. I use gsnShadeMid rather than
gsnShadeHigh)
opt@gsnShadeLow = "red"
opt@gsnShadeMid = "yellow"
; opt@gsnShadeHigh = "yellow"
and this is what I get:
No filled colors, no errors or warning messages.
I'm using NCL v 6.1.2
Am I doing something wrong? is this supposed to work?
Thanks,
Marc
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Received on Tue Jul 23 17:12:20 2013
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