Function to display variables in MATLAB figures

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Rohan
Rohan 2011-8-16
Say I have to plot the following:
x = [3 4 5 6]; y = [6 7 8 9];
Say in some logic these vectors hold their value for 'case1' which holds an integer value 10 (say).
Now I want this integer -10 i.e. value of 'case1' to display when I plot a MATLAB figure say using plot(x,y). Is there a function that will insert this value onto my plot?
Thank you

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回答（1 个）

Chirag Gupta
Chirag Gupta 2011-8-16
Where do you want to insert this in the plot? You can insert this as a point on the existing graph using:
hold on;
plot(-10,1,'xk'); % Whats the y coordinate for -10 ?
If you just want to insert it to annotate your graph, you can use:
hold on;
text(2,3,'case1: -10');
If you want to place this as the title:
title(['case 1:' num2str(-10)]);
  2 个评论
Rohan
Rohan 2011-8-16
Aplogies the '-' in the pos was to stand for hiphun and not negative sign.
Yeah I want to have it as a title. So does the num2str function display the value '10' on the plot screen title if I did the following?
plot(x,y);
Case_val = 10;
title(['case 1' num2str(Case_val)]);
Cheers
Chirag Gupta
Chirag Gupta 2011-8-16
should! If you want the quotes around the the number then:
title([' case 1: ''' num2str(val) '''']);

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