Error when using legend or clicking on the plot

Hi. I am a student whos studying MatLab basics. Am using a MacBook, and when I use the legend function while plotting it always gives me an error and am not able to get the legend. The error looks like this:

Attempt to execute SCRIPT allchild as a function:
/Users/ullasrajvanshi/Documents/MATLAB/allchild.m

Error in get_legendable_children (line 9)
legkids = allchild(ax);

Error in graph2dhelper (line 31)
        [varargout{1:nargout}] = feval(varargin{:});

Error in legend>getLegendableChildren (line 620)
children = graph2dhelper('get_legendable_children', ha);

Error in legend>set_children_and_strings (line 632)
    ch = getLegendableChildren(ha);

Error in legend>make_legend (line 334)
set_children_and_strings(ha,leg,children,strings);

Error in legend (line 282)
    make_legend(ha,args(arg:end),version);

Also when I select any point on a figure, it also gives me an error. I have tried reinstalling MatLab but it doesnt work. Can anyone please help me

Thanks

Answer 1

[Nick Counts]

It looks like you have overloaded allchild.m

Enter "which allchild.m" in the command window. You should see something like this:

>> which allchild.m
/Applications/MATLAB_R2014b.app/toolbox/matlab/uitools/allchild.m

Based on your above, I predict you will get

/Users/ullasrajvanshi/Documents/MATLAB/allchild.m

Which means that you have defined a script and named it allchild.m

Now when Matlab trys to use its built-in function allchild() it is finding your script instead and things are breaking. You can rename your file or move it to a folder that isn't on the Matlab path and your issue should go away.

Good luck