# LaTex with 2 strings separated by a num2str

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Jacob Yarinsky on 19 Apr 2019
Commented: Star Strider on 19 Apr 2019
Hi all, I have what I hope to be a simple question. This is the code I am working on now.
errordisplay=[' $\varepsilon_{RTP}=$ ',num2str(rtep),];
text(30,15,errordisplay,'interpreter','latex')
I want to add a percent sign after the conversion of 'rtep'. But when I do this
errordisplay=[' $\varepsilon_{RTP}=$ ',num2str(rtep),'%'];
the conversion of ' $\varepsilon_{RTP}=$ ' goes away and leaves the string as typed.
Any ideas?

Star Strider on 19 Apr 2019
Try this:
errordisplay=[' $\varepsilon_{RTP}=$ ',num2str(rtep),'\%'];
It seems you need to ‘escape’ the ‘%’.
##### 2 CommentsShowHide 1 older comment
Star Strider on 19 Apr 2019
As always, my pleasure.

David Wilson on 19 Apr 2019
Use an escape (backslash) for the %
errordisplay=[' $\varepsilon_{RTP}=$ ',num2str(rtep),'\%'];