Why are you trying to do this? If you're trying to modify the copy and later run the modified copy, I would instead have the function accept input arguments related to the change and take action based on the specific values with which it is called.
For example, if I wanted to have a function that can display either the sine, cosine, or tangent of a set of data you could have a function that you copy and modify, or you could have a function that accepts the trig function:
subplot(3, 2, 1)
plotTrigFunction(@sind)
subplot(3, 2, 2)
plotTrigFunctionStr('sin')
subplot(3, 2, 3)
plotTrigFunction(@cosd)
subplot(3, 2, 4)
plotTrigFunctionStr('cos')
subplot(3, 2, 5)
plotTrigFunction(@tand)
subplot(3, 2, 6)
plotTrigFunctionStr('tan')
function plotTrigFunction(funToPlot)
x = 0:360;
plot(x, funToPlot(x), 'DisplayName', func2str(funToPlot))
legend show
end
function plotTrigFunctionStr(name)
x = 0:360;
switch name
case 'sin'
y = sind(x);
case 'cos'
y = cosd(x);
case 'tan'
y = tand(x);
otherwise
error("This function, as written, can only process " + ...
"the sine, cosine, and tangent functions");
end
plot(x, y, 'DisplayName', name)
legend show
end
