See procedure docstring for description.
- Set the active canvas to a specified window number.
Use this routine if you want to plot onto another window. You
can also use this routine to make a previously defined canvas
active so you can overplot to it or create a new plot in its
* nwindow: The window number specifying the canvas to make the
active canvas. Integer.
* The active canvas is set to the window number given in argument
nwindow. The system variable specifying the window number (i.e.
active_canvas_num) is set to nwindow.
* If there is a previously defined active canvas it is moved to the
inactive canvases dictionary (system variable inactive_canvases).
It remains displayed in its existing window.
* The names of the base graphics method and templates for the
active canvas and inactive canvases are stored in corresponding
system variables suffixed by base_gm and base_tpl.
* If the canvas specified by nwindow is already defined, that
canvas is made the active canvas; if not the active canvas is
set to an empty list (and the base graphics method and template
names set to empty strings).
Example: A contour plot is made in window 0 (default), then a
second contour plot is made in window 1. Then a line plot is
made in window 0, overwriting the original contour plot. Window
1 is left unchanged:
import Numeric as N
from contour import contour
from plot import plot
x = N.arange(29) * 10.0
y = N.arange(21) * 10.0 - 100.0
data = N.outerproduct( N.sin(y*N.pi/360.), N.cos((x-140.)*N.pi/360.))
contour(data, x, y, title='Example 1')
contour(data, x, y, title='Example 2')
plot(N.arange(10), N.sin(N.arange(10)/N.pi), title='Example 3')
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