How to subscript in figures

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Aravin
Aravin 2014-7-13
评论： Star Strider 2014-7-14
Hello everyone,
I want to have subscript labels in axeses in matlab. Let say I have
J = [1 2 3; 4 5 6];
bar(J);
set(gca,'XTickLabel',{'I_0','I_1'});
I can't get I_0 in subscript. How can I do this. I m using Matlab 2009 on Ubuntu.

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Star Strider
Star Strider 2014-7-13
Here is one way, there may be others:
J = [1 2 3; 4 5 6];
bar(J);
set(gca,'XTickLabel','');
set(gca, 'XTickLabelMode','manual')
hxt = get(gca, 'XTick')
ypos = min(ylim) - diff(ylim)*0.05;
text(hxt, [1 1]*ypos, {'I_0','I_1'}, 'HorizontalAlignment', 'center')
You will have to experiment with the ypos value for text to put it exactly where you want it. I did my best to make it as adaptive as I could.
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Aravin
Aravin 2014-7-14
I have Figured it out. Thank you.
Star Strider
Star Strider 2014-7-14
My pleasure!
GMT-6 here so I’m just now seeing your reply.
You need to use ‘ones(1,length(hxt))*ypos’ to make the x and y vectors equal for the ‘text’ statement, but you’ve already figured that out.

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dpb
dpb 2014-7-13
编辑：dpb 2014-7-13
For some unfathomable reason, TMW has not implemented the TeX or LaTeX interpreter for axis labels so you'll have no joy that route.
set(gca,'xticklabel',[]) % hide the existing labels
then use
xt=get(gca,'xtick').';
text(xt,-0.2*ones(size(xt)),num2str(xt-1,'I_%d'), ...
'horizontal','center')
(ADDENDUM--incorporate the horizontal alignment to center)
Salt to suit...

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