Aaron,
Each text object that you add with the text() function is appended to a
list called "texts" that is an attribute of the axes object. So, to
remove the last text object you added, you can do:
del gca().texts[-1]
draw()
If what you want to do is change the contents but not the position, you
can do:
gca().texts[-1].set_text('Big Mistake')
draw()
If you want to change the position, you can do:
gca().texts[-1].set_position((3,4))
draw()
Note that in the set_position method, unlike the text() function, the
position is specified as an (x,y) tuple; the parentheses are required.
Or you can just shift one coordinate:
gca().texts[-1].set_x(5)
draw()
If you want to change the first text object, then of course you would
use texts[0] instead of texts[-1], etc.
There is an alternative pylab function for setting properties that takes
care of redrawing automatically. Here is an example:
setp(gca().texts[-1], 'fontsize', 15) # Matlab-style
or
setp(gca().texts[-1], fontsize=17) # nicer style
If you are going to want to experiment with the properties of your text
object, then grab a reference to it when you create it, like this:
tt = text(6,7,'another one')
setp(tt, fontsize=15)
That way you don't have to keep typing "gca().texts[-1]".
Eric
Aaron Hoover wrote:
> Matplotlib is great. Between numpy, scipy, and matplotlib, I'm almost
> completely weaned myself off of Matlab (just need to rewrite a bunch of
> m-files in Python).
>
> My question is, is there an easy way to remove text that's been added
> with the text() function from a plot (like if I make a mistake in the
> text or its position)? I've thought about adding a long string of spaces
> in the same location, but haven't tried it yet. Is there an easier way
> like a clear() function or some other method I may have missed?
>
> Thanks,
> Aaron
>
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