Edit box string to column value plotting

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Greg Morris
Greg Morris 2019-6-19
编辑： Stephen23 2019-6-19
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
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Stephen23
Stephen23 2019-6-19
编辑：Stephen23 2019-6-19
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
Greg Morris 2019-6-19
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

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Stephen23
Stephen23 2019-6-19
编辑：Stephen23 2019-6-19
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));

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