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We will study different ways to change the size, resolution, and background color of the desired figure in MATLAB. We will use different sample codes and relevant output to clear your concepts and give you a comprehensive understanding of the ways to set the figure size, resolution, background color or graphics in MATLAB.

The easiest way is to use exportgraphicsthe function provided by MATLAB. We can use exportgraphicsthe tool to export charts in documents/publications, such as articles or PowerPoint slides.

We can use this method to save the graphics with correct size, quality and background color as per any requirement.

As we all know, the picture is made up of pixels, and cropping emphasizes the reduction of pixels resulting in information loss. exportgraphicsWhen using the function, the stored data will be tightly cropped along the x-axis and y-axis with the screen background.

What is stored does not include all UI elements and adjacent objects, such as our drawing panel.

Use exportgraphicsthe function to change the size of an image or graphic

exportgraphicsFunction records the material at the same width and height as it is displayed on the screen. If you modify the width and height, change the size of the content in the figure.

One method generates the plot in a tiled chart style with no padding at the desired size. The layout is then sent to exportgraphicsthe method. For example, to save a bar chart as a 3 x 3 inch square picture, create a tiled plot and set our Paddingoption to tight.

op = tiledlayout(1,1,'Padding','tight');
op.Units = 'inches';
op.OuterPosition = [0.31 0.31 4 4];
nexttile;
bar([2 6 12 7 4 11 5 9])
exportgraphics(op,'bar3x3.jpg','Resolution',299)

Output:

Use exportgraphicsthe function to change the resolution of an image or plot

As we all know, images by definition are stored in DPI (dots per inch). So, to export a plot at a specified resolution, we can use exportgraphicsthe function and declare it using name-value-pair statements.

Let us understand this concept by looking at the following example.

bar([2 6 12 7 4 11 5 9])
output = gcf;
exportgraphics(output,'barchart.png','Resolution',299)

Output:

We created a bar chart in this example and saved it with a 299-DPI-PNG file extension. Following this example, you can save any image or chart of your choice at the resolution you want.

Use exportgraphicsthe function to change the background color of an image or graphic

Let's exportgraphicsdo this by making a heatmap with a transparent background using the function.

op = heatmap(rand(12,12));
exportgraphics(op,'output.pdf','BackgroundColor','none','ContentType','vector')

Output: