Hi Frank...
It looks to me like the rendering of your lines is being done very
indirectly, and it looks like the placement of the 'shape' is always
fixed at the "visad box" coordinate of y=0 -- Bill will have to comment
on that.
Unless you're using this project as a way to learn a lot about VisAD, I
might suggest a far simpler approach: use the drawLine() method
available in subs.py. (You could, of course, also use the
'graph.histogram()' method, but drawLine() gives you a little more
control). I offer this modest example that will draw your
histogram-type of display:
from visad.python.JPythonMethods import *
import subs
def main():
maps = subs.makeMaps("Day", "x", "Precipitation", "y")
Nday = 31
maps[0].setRange(0,Nday-1)
maps[1].setRange(0,1)
disp = subs.makeDisplay( maps )
from random import *
for x in xrange(Nday):
y = .1 * random()
if x == 0: y = 1.0
subs.drawLine(disp, ((x,x),(y,0)), color='green', width=4)
showAxesScales(disp,1)
from java.awt import Font
setAxesScalesFont(maps, Font("Monospaced", Font.PLAIN, 22))
subs.setBoxSize(disp,.65)
subs.showDisplay(disp)
if __name__ == "__main__":
main()
--
Tom Whittaker (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center
Cooperative Institute for Meteorological Satellite Studies
Phone/VoiceMail: 608.262.2759
