MATLAB: How to plot a piecewise in MATLAB

functiongraphMATLABpiecewiseplotplottingsignalsignal processing

I have this piecewise function and I have to plot this discrete signal using the stem function. This is what I wrote:
And this is the error I am getting:
What is it that I am doing wrong?

Best Answer

I prefer the anonymous function approach: 
x = @(n) n.*((0<=n) & (n<=8)) + 1*((-4<=n) & (n<=-1));
n = -10:12;
figure
stem(n, x(n))
grid
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