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Creating .PNG image from temperature values

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Oliver Ramos
Oliver Ramos 2020-10-14
评论： Ameer Hamza 2020-10-14
The size of my table (i.e. variables) is 462x622 double
I used the code below to create an image:
imagesc(image); colormap jet; axis off
However, the pixel size of the resulting image is 420x560.
How can I make an image with the same pixel size as the variables?

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Ameer Hamza
Ameer Hamza 2020-10-14
编辑：Ameer Hamza 2020-10-14
I guess you are using saveas() or some other function to save the .png file. They are not suitable for maintaining the resolution. Use imwrite() as shows in the following lines
image = round(rescale(image, 1, 256));
imwrite(image, jet, 'image.png');
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