20060303-Help! My publisher wants a 300 dpi TIFF

原文：http://blogs.mathworks.com/steve/2006/03/03/help-my-publisher-wants-a-300-dpi-tiff/

TIFF files have "resolution" tags in them. These tags specify the number of pixels per unit in the horizontal and vertical directions. The default unit is inches. By default, the MATLAB function imwrite sets these values to 72 pixels per inch, but imwrite has a syntax to specify a different value.

imwrite(my_image, 'figure_10_a.tif', 'Resolution', 300);