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Hi, I run the vector NG function example with IDL 8.3:
; Read the data.
RESTORE, FILEPATH('globalwinds.dat', SUBDIR=['examples','data'])
; Set up the map projection, grid, and continents.
m = MAP('Equirectangular', LIMIT=[0,-150,60,-45], $
LABEL_POSITION=0, LABEL_ANGLE=0, $
COLOR='light gray', LABEL_COLOR='black')
cont = MAPCONTINENTS(FILL_COLOR='light gray')
; Display the vector data on top of the map.
vec = VECTOR(u, v, x, y, /OVERPLOT, $
MIN_VALUE=0, MAX_VALUE=25, $
RGB_TABLE=39, AUTO_COLOR=1, LENGTH_SCALE=2)
l = Legend(SAMPLE_MAGNITUDE=10, UNITS='$m s^{-1}$', $
POSITION=m.MapForward(-45,61), /DATA, $
VERTICAL_ALIGNMENT='bottom')
c = Colorbar(TARGET=vec, POSITION=[0.2,0.1,0.8,0.15], $
TITLE='Wind speed $(m s^{-1})$')
and when I zoom in or out the graphics, the following messages show:
% IDLGRSRCDEST::DRAW: IDLGRSRCDEST::DRAW cannot be called recursively.
% IDLGRSRCDEST::DRAW: IDLGRSRCDEST::DRAW cannot be called recursively.
So why? Very thanks!
dave
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