MATLAB: Can the program add code to itself

file iofile write

I'd like to add a sort of learning ability to my program where it recognizes new name inputs and adds them to my current list as a way of future proofing it. I would be adding an elseif statement at the same line every time (just after the initial if). My current idea as I'm assuming you can't write to a file while it is currently running in MATLAB is to set a value of 1 or 0 which will run another program afterward to write to the original if 1, or end if 0.

Is there a simpler way of writing to a specific line (in this case line 16) in a .m file?

Where can I find more information on how to go about this?

Best Answer

You can use fgetl() and fprintf() to write text to the m-file, as long as MATLAB doesn't have the m-file locked, which I don't think it does. I also agree with Stephen about that not being a wise approach, especially when better approaches are available.

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MATLAB: Why matlab rounding the result itself

You need to cast ‘w’ as double before you do the calculations. You can recast it as whatever it was previously to save it later.

The easiest way might be:

w=imread('win.png');%its a 32X32 picture

wrr = double(w);
for i=1:32
    for j=1:32
    wrr(i,j)=wrr(i,j)*.02;
    end
end
disp('wrr');
disp(wrr);

That preserves the original ‘w’ if you want to do that.

However the easiest way to do what you want is simply:

w=imread('win.png');%its a 32X32 picture
wrr = double(w) * 0.02;

MATLAB: Edit and run a script with another script

I found a way. I just copied and pasted the two existing scripts into a new one and created a loop around them. Pretty easy, but still curious if there's any functionality for scripts to interact with each other.

Best Answer

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MATLAB: Why matlab rounding the result itself

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