[EMAIL PROTECTED] wrote:
> Hi,
>
> I have different questions to use tex with matplotlib.
>
> The first one:
>
> If I'm doing:
>
> rc('text', usetex=True)
> xlabel('$\textrm{toto}$') # bad
> xlabel(r'$\textrm{toto}$') # ok
>
> The results are not the same and I don't understand why.
>
> and for:
>
> xlabel('$\textit{toto}$') #bad
> xlabel(r'$\textit{toto}$') #ok
>
> same things, but it's working fine for:
>
> xlabel('$\it{toto}$') #ok
> xlabel(r'$\it{toto}$') #ok
>
> but it's not working for \bf:
>
> xlabel('$\textbf{toto}$') # bad
> xlabel(r'$\textbf{toto}$') # ok
> xlabel('$\bf{toto}$') # bad
> xlabel(r'$\bf{toto}$') # ok
>
> And this bring to the second question, I would like to create the xlabel with
> latex stuf inside somewhere in my script:
>
> label='$\textrm{test}_2$'
>
> but that can't work:
>
> xlabel(label) # bad
>
> How to tell that I want the "r" before the chains to have TeX working like
> expected?
I think you have much to gain and nothing to lose by *always* using raw
strings for TeX. The reason your "bad" cases are bad is that \b and \t
are escape sequences; in an ordinary string, without the leading r, the
two-character sequences are translated into control characters (bell and
tab, respectively). \i is not an escape sequence, so it gets left alone.
Eric
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