How can I write a fraction inside string?

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ANANTA BIJOY BHADRA
ANANTA BIJOY BHADRA on 13 May 2022
Commented: Jan on 14 May 2022
I have a plot where I put the graph's parameters in a string and put xlabel as the unit on X-axis. Inside the string, I need to have the below line "B-H curve at f=%d Hz with dB/dH0=%.4f with the point (B1, H1) and alpha=%.4f, c=%.2f, k=%.d" How can I write that? I have given a sample code below:
clc
clear
y=rand(100,1);
x=1:100;
plot(x,y)
str=sprintf(??????????????????????????????????????????????????????????????????????);
xlabel({'H (A/m)',str});
ylabel('B (T)');

Accepted Answer

Jan
Jan on 13 May 2022
Edited: Jan on 13 May 2022
What exactly is the problem? I've simply copied the string provided in the question, inserted a linebreak \n to let the comnplete text be inside the limits and inserted some dummy data:
y=rand(100,1);
x=1:100;
plot(x,y)
str=sprintf(['B-H curve at f=%d Hz with dB/dH0=%.4f with the point\n', ...
'(B1, H1) and alpha=%.4f, c=%.2f, k=%.d)'], 1, 2, 3, 4, 5);
xlabel({'H (A/m)', str});
ylabel('B (T)');
Looks trivial. Do I oversee anything?
  10 Comments
Jan
Jan on 14 May 2022
@ANANTA BIJOY BHADRA: We have showed you, how to display the wanted fraction as xlabel. It is trivial to insert the other part of the text by your own. So what is still the problem?
xlabel(['Put what you want here $\frac{dB}{dH0}$', ...
char(10), ' and here'], 'Interpreter', 'latex')
You got examples already for inserting values in a string
str=sprintf(['B-H curve at f=%d Hz with dB/dH0=%.4f with the point\n', ...
'(B1, H1) and alpha=%.4f, c=%.2f, k=%.d)'], 1, 2, 3, 4, 5);
All you have to do is to combine these two methods.

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