How can I add text to a plot?
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I want to add some text to my graph. I have been through lots of documentation of the text() command. For some reason it just doesn't want to work. I know that sounds like I haven't tried fixing it myself but I have and I'm at a complete loss.
I have tried running the exact example code in the documentation and I receive one of two errors.
??? Subscript indices must either be real positive integers or logicals.
Error in ==> Untitled2 at 2
text(pi,0,' \leftarrow sin(\pi)','FontSize',18)
Or if I make them positive and real integers
??? Index exceeds matrix dimensions.
Error in ==> Untitled2 at 2
text(1,1,' \leftarrow sin(\pi)','FontSize',18)
The example code that I tried running on my PC from the documentation:
plot(0:pi/20:2*pi,sin(0:pi/20:2*pi))
text(pi,0,' \leftarrow sin(\pi)','FontSize',18)
Here is a link to the documentation with the correct output.
Thanks
댓글 수: 1
Mischa Kim
2014년 2월 4일
Lukas, is the error really referring to the text command? How does the rest of the code look like?
What MATLAB version are you using on what platform?
채택된 답변
Robert Cumming
2014년 2월 4일
Is text a variable in your workspace?
Type:
whos text
In the command line to check.
clear text
To clear the variable -> then try the example from the documentation again.
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추가 답변 (2개)
David Sanchez
2014년 2월 4일
The error message you pasted refers to a *.m file called Untitled2.m.
Do the following and tell us what you get:
On the command window:
clear all
plot(0:10,0:10)
text(5,5,'TEST TEXT')
Your error message has nothing to do with the text command.
댓글 수: 2
Anand
2014년 4월 25일
Hi, I have managed to read and display text within a running AVI video file, but now i want to only add text to certain frames...e.g frame 1-20 and 30-40....is there any way i can i can add text from one frame to another instead of it displaying throughout the whole video.
thank you.
Title_={'Smile'};
hText = text(x,y,'string');
imshow(Background);
text(40,100,Title_{1},'Color','r','FontWeight','Bold','FontSize',40);
delete(htext);
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