Input a variable into a plot title
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Luke
on 10 Sep 2014
Commented: Giuseppe Degan Di Dieco
on 21 Oct 2021
I've trawled through these forums and found loads on inputting variables as titles, however, none of them work for me. Im trying to change the title of a plot with respect to a parameter the user will enter in the function. First i call a string for example
str = sprintf('just an example of %d that isnt working', variable)
title(str)
However only the 'just an example of' is printed out on the title of the plot, everything after and including the variable has dissapeared, this happens when i move the variable about in the title too.
Cheers!
3 Comments
Soumitra Vadnerkar
on 26 Sep 2017
Edited: Walter Roberson
on 26 Sep 2017
How about this, given in help documentation:
figure
plot((1:10).^2)
f = 70;
c = (f-32)/1.8;
title(['Temperature is ',num2str(c),' C'])
Accepted Answer
Steven Lord
on 22 May 2019
With the introduction of the string array in release R2016b (and the ability to enclose text data in double quotes to create a string in release R2017a) you can also use:
plot((1:10).^2)
f = 70;
c = (f-32)/1.8;
title("Temperature is " + c + " C")
1 Comment
More Answers (2)
MathWorks Support Team
on 22 May 2019
How about this, given in help documentation:
plot((1:10).^2)
f = 70;
c = (f-32)/1.8;
title(['Temperature is ',num2str(c),' C'])
2 Comments
Giuseppe Degan Di Dieco
on 21 Oct 2021
Thank you for highlighting the documentation's content to beginners!
Best.
Adam
on 10 Sep 2014
title( ['just an example of ' num2str( variable ) ' that isnt working'] )
Does that work?
8 Comments
Walter Roberson
on 14 Feb 2017
sprintf() would work fine in R2013* . However, the example given
str = sprintf('just an example of %d that isnt working', variable)
would be best for the case where the variable is an integer. If you have a variable that is numeric but not an integer, you would use a %e or %f or %g format.
Adam
on 14 Feb 2017
sprintf is definitely a neater approach. Back in 2014 I was less familiar with using sprintf so it didn't spring to mind for this!
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