Matlab fails to create plots when called from a function

Hi there,

Whenever I launch the following code:

disp("Hello World")
x=0:0.01:10;
test_plot(x)

With test_plot() defined as such:

function test_plot(x)
plot(x,sin(x))

I get the following error message:

Error using gobjects (line 63) Inputs must be scalar numeric or a vector of array dimensions.

Error in newplot (line 47) fig = gobjects(0);

Error in test_plot (line 2) plot(x,sin(x))

Error in test (line 3) test_plot(x)

I am running Matlab 2017a on a Linux Mint 18 machine.

Anyone knows how to fix this?

Answer 1

[Jan]

Do you have any user-defined folders on top of the list of path folders? Then this can be the problem:

This can happen if you e.g. redefine false. Then inside gobject.m the line

errFlag = false;

can create the wrong output. But many other functions could suffer from such a shadowing also. You can check this by https://www.mathworks.com/matlabcentral/fileexchange/27861-uniquefuncnames.

To avoid shadowing of built-in function, check the names and append user-defined folders on the bottom of the path.