# How can I write a fraction inside string?

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ANANTA BIJOY BHADRA 2022년 5월 13일
댓글: Jan 2022년 5월 14일
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)');

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### 채택된 답변

Jan 2022년 5월 13일
편집: Jan 2022년 5월 13일
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?
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ANANTA BIJOY BHADRA 2022년 5월 13일
I need to make a figure caption. That is my main target. I have attached an image along with the comment. Hope it helps.
Jan 2022년 5월 14일
@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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