MATLAB: Plotting data based on index

plots

I'm trying to plot multiple data sets of arrays that have the same size (1 col 27 rows) on the same plot. The x axis should be the row or index of the datum and the y axis would be its value. How do I do this? I don't normally use plots so this may be a dumb question. Thanks in advance

Best Answer

I would do something like this: 
y = (sin([1;2;3]*(0:26)*pi/13)).';         % Create Matrix
x = 1:size(y,1);
figure
plot(x, y)
grid
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