| How to access properties of multiple plots in a function graphics window? [message #86471] |
Tue, 12 November 2013 09:22  |
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Paul Van Delst[1]
Messages: 1157
Registered: April 2002
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Senior Member |
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Hello,
I've got code something like the following in a procedure to plot
barplots of some stats in a 2x2 grid. A legend for the datasets is
created only for the first plot, i.e. b[0].
w = WINDOW()
b = OBJARR(n_plots)
FOR j = 0, n_plots-1 DO BEGIN
index = 0
FOR i = 0, n_datasets-1 DO BEGIN
b[j] = BARPLOT( x, y[*,i,j], $
NBARS=n_datasets, $
INDEX=index++, $
NAME = dataset_name[i], $
OVERPLOT = i, $
LAYOUT = [2,2,j+1], $
/CURRENT )
IF ( j EQ 0 ) THEN BEGIN
IF ( i EQ 0 ) THEN $
l = LEGEND( TARGET=b[j] ) $
ELSE $
l.Add, b[j]
ENDIF
ENDFOR
ENDFOR
Works great. And I return the WINDOW object reference, w, back to the
caller.
What I want to do is access w and modify the properties of the various
plots (e.g. font size, legend font size) via the "w" object reference.
But I can't find any info in the IDL help that will tell me what the
object property references should be.
For instance, if I have access to the object array "b" I can change the
font size of the second plot simply by doing:
b[1].font_size = 9
and colour of the title of the third plot by (from IDL documentation)
b[2].title.color = "blue"
But how do I do that via the WINDOW reference, "w"?
Each individual plot (the b[j]'s) has been added to the window graphic
via the "CURRENT" keyword, but what's the syntax for the accessing those
plots via the object reference?
I hope my description of what I want to do makes sense.
Thanks for any info.
cheers,
paulv
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