change dpi from auto to 300 using matlab code?

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Is there any code to change the DPI from auto mode to 300 so that It can be added to the script directly,without manually going and changing in the picture settings?
Ramesh Bala
Ramesh Bala on 22 Jun 2018
Error using inputcheck Illegal option '-k300' given.

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Accepted Answer

Rik on 22 Jun 2018
This code should work. I recognize the -k switch from a similar context, but the doc indicates that you should use -r. (I use sprintf so you can mistakenly enter a decimal res, Matlab will round it anyway during the writing of the image)
res = 300;
print('figure1.tiff','-dtiff',['-r' sprintf('%.0f',res)]);

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