Edit box string to column value plotting

Im attempting to use edit boxes in a GUI as away to destinguish what columns a plot command recognizes as a plot

numdata=xlsread(uigetfile({'.xlsx'},'File Selector'));
x=numdata(:,str2num(handles.XCInput, 'string'));
y=numdata(:,str2num(handles.YCInput, 'string'));
plot (x,y)

XCInput and YCInput are the tags for the chosen text edits

[Adam Danz]

What problems are you having?

Could you provide an example of a string stored in handles. XCInput and YCInput?

[Greg Morris]

The program just simply won't run.

[Stephen23]

What is this syntax supposed to do?:

str2num(handles.YCInput, 'string')

I don't see anything in the str2num documentation about two input arguments.

[Greg Morris]

It is to take the given value of edit text boxes

Where as the first code was

numdata=xlsread(uigetfile({'.xlsx'},'File Selector'));
x=numdata(:,1);
y=numdata(:,2);
plot (x,y)

The code in question is so that you can imput any given number into a gui edit box and then that number the the column read to be plotted

Answer 1

[Stephen23]

You invented a str2num syntax that does not exist:

str2num(handles.YCInput, 'string')
%                      ^^^^^^^^^^ is this in the STR2NUM documentation?

Where in the STR2NUM documentation is the 2nd input shown? (hint: nowhere, it does not exist).

If you want to use functions, you need to follow the syntaxes that they actually support:

x = numdata(:,str2num(handles.XCInput));