[x, y] = meshgrid(-pi:0.1:pi, -pi: 0.1:pi); % Define two functions z1 = sin(x) * cos(y); z2 = cos(x) .* sin(y); figure; % Plot the overlayed contours subplot(1,3,1) contour(x, y, z1, 20, 'LineColor', 'b'); % 20 contour lines, blue color hold on; contour(x, y, z2, 20, '--', 'LineColor', 'r'); % 20 contour lines, red color, dashed % Plot the second contour with different line style and color % Add labels and legend title('Overlayed Contour Plot of Two Functions'); legend('sin(x) * cos(y)', 'cos(x) * sin(y)'); hold off; subplot(1,3,2) contourf(x, y, z1, 20, '--', 'LineColor', 'b'); % 20 contour lines, blue color, dashed % Add labels and legend title('Filled Contour of Function 1'); legend('sin(x) * cos(y)'); colorbar; subplot(1,3,3) contourf(x, y, z2, 20, % Add labels and legend 'LineColor', 'r'); % 20 contour lines, red color, dashed title('Filled Contour of Function 2'); legend('cos(x) * sin(y)'); colorbar; Question 1. What type of data format is suitable for contour plotting? Question 2. Please provide two engineering examples that contour plotting is most appropriate for. Please include rationales for your choice.