How to use num2str inside text with latex interpreter?

45 views (last 30 days)
Hi to everyone, I want to assign a number to a string inside a text command to dynamically change the output of the text inside the plot.
Here is an attempt of coding:
clc;clear all;close all;
figure
i=1
i = 1
plot(1:6,2:7)
text(2,4,'$L_{1}$','Interpreter',"latex");
text(4,5,'$L_{',num2str(i),'}$','Interpreter',"latex");
Error using text
Unrecognized property 1 for class Text.
Can you help me to correclty code the last line?

Accepted Answer

Star Strider
Star Strider on 7 Oct 2022
I prefer to use sprintf for this. (If you use any escape characters, you need to use double backslants. See the documentation for detais.).
figure
i=1
i = 1
plot(1:6,2:7)
text(2,4,sprintf('$L_{%d}$',i),'Interpreter',"latex");
text(4,3,sprintf('$L_{\\frac{%d}{2}}$',i),'Interpreter',"latex");
.
  4 Comments

Sign in to comment.

More Answers (2)

Jeff Miller
Jeff Miller on 7 Oct 2022
I think you need square brackets like this to assemble all the characters into a single string
text(4,5,['$L_{',num2str(i),'}$'],'Interpreter',"latex");

dpb
dpb on 7 Oct 2022
i=1;
text(0.4,0.5,"L_{" + i + "}")
i=i+1;
text(0.4,0.4,"\it L_{" + i + "}")
i=i+1;
text(0.4,0.3,"\it L\rm_{" + i + "}")
Variations on a theme; the above doesn't require LaTeX; the default TeX interpreter can manage on its own.

Categories

Find more on Characters and Strings in Help Center and File Exchange

Products


Release

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!