Saving Image MATLAB

Question

I need to save the image of my contour plot to be square with a (1:1) aspect ratio. How do I do this? Thanks in advance!

Answer 1

Below are the steps and MATLAB code snippets to save the image of a contour plot with a square aspect ratio.

Steps:

1. Generate the contour plot using the `contour` or `contourf` function.

2. Use the `pbaspect` function to set the aspect ratio of the plot to [1 1 1].

3. Optionally, set the figure size to make it square.

4. Use the `saveas` or `print` function to save the figure.

Example Code:

% Create some data for demonstration

[X, Y] = meshgrid(-2:0.1:2, -2:0.1:2);

Z = X.^2 + Y.^2;

% Step 1: Create Contour Plot

figure;

contourf(X, Y, Z);

% Step 2: Set Axes Aspect Ratio

pbaspect([1 1 1]);

% Step 3: Adjust Figure Size (Optional)

set(gcf, 'Position', [100, 100, 500, 500]);

% Step 4: Save Figure

saveas(gcf, 'contour_plot_square.png');

This will save the contour plot as a square image with a 1:1 aspect ratio in the file `contour_plot_square.png`.

- The `pbaspect` function sets the data aspect ratio, which is the relative length of the data units along each axis. Setting it to `[1 1 1]` ensures a square plot.

- The `set(gcf, 'Position', [x, y, width, height])` function sets the figure window to be square, although this is optional if you are solely interested in the aspect ratio of the plot itself.