Possible matlab bug with text() function?

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Azhar Ali
Azhar Ali am 18 Sep. 2019
Kommentiert: Steven Lord am 18 Sep. 2019
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!
  2 Kommentare
Kevin Phung
Kevin Phung am 18 Sep. 2019
where is it throwing the error? It runs for me
Azhar Ali
Azhar Ali am 18 Sep. 2019
Error is thrown for text function despite no other variables in workspace. Reboot of computer and Matlab resolved issue.

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Akzeptierte Antwort

madhan ravi
madhan ravi am 18 Sep. 2019
Bearbeitet: madhan ravi am 18 Sep. 2019
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

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Azhar Ali
Azhar Ali am 18 Sep. 2019
I had no variables in my workplace (clear; clc; close all) and I still had the error. I rebooted computer and Matlab and it resolved the issue. Weird. Still don't know why I got the error, but problem is fixed. Thanks all.
  1 Kommentar
Steven Lord
Steven Lord am 18 Sep. 2019
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.

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