Possible matlab bug with text() function?
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I'm having issues with the text function. I am copying your example from the documentation, and I get the following error:
"Subscript indices must either be real positive integers or logicals."
Here is the example:
x = 0:pi/20:2*pi;
y = sin(x);
plot(x,y)
text(pi,0,'\leftarrow sin(\pi)')
I am using Matlab 2013a. Very simple example, not sure why I can't replicate the documentation example. Thank in advance!
采纳的回答
madhan ravi
2019-9-18
编辑：madhan ravi
2019-9-18
When you name variable as the same name as the function this happens.
clear text plot sin % not sure which function you’re shadowing , but it definitely is a reason
更多回答（2 个）
Azhar Ali
2019-9-18
0 个投票
1 个评论
Steven Lord
2019-9-18
If this recurs, set an error breakpoint and run your code. When you receive the error, check if you are in a function named text.m (which would be shadowing the built-in text function.) If you are not, post the full text of the error message (all the text displayed in red, not just the "Subscript indices must either be real positive integers or logicals." part) and it may provide the information needed to determine the cause.
Lola Gadea
2024-6-9
0 个投票
I have the same problem with the 2023a version:
x = 0:pi/20:2*pi;
y = sin(x);
plot(x,y)
text(pi,0,'\leftarrow sin(\pi)')
Index in position 1 is invalid. Array indices must be positive integers or logical values.
Error in example_labels5 (line 4)
text(pi,0,'\leftarrow sin(\pi)')
1 个评论
What does this command show?
which -all text
I'm betting it will show something that looks like the following instead of the text above (note the first line.)
text = 42;
which -all text
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