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====== Math 445 lecture 16: 3D graphics ====== ==== 1d graphs ==== How would you make a graph of $f(x) = (x-1)^2$ on $-3 \leq x \leq 3$ in Matlab? You would - Create vector ''x'' of gridpoints with ''linspace'' - Evaluate $f(x)$ on gridpoints using dot operations - Use ''plot(x,f)'' to draw the graph For example, <file matlab plot1d.m> % Plot 1d graph of f(x) = (x-1)^2 on -3 < x < 3 x = linspace(-3, 3, 100); % create vector x of gridpoints f = (x-1).^2; % evaluate f(x) on gridpoints plot(x,f) % plot the graph xlabel('x') ylabel('f(x) = (x-1)^2') </file>