Add png resolution option to saveGIF and ani.option function

yihui / animation

A gallery of animations in statistics and utilities to create animations

https://yihui.org/animation/

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Closed yulijia closed 7 years ago

yulijia commented 7 years ago

Add png resolution option to saveGIF and ani.option function, by default it should be 72 dpi.

yulijia commented 7 years ago

Thanks. I need write a if statement, the resolution option only support png, jpeg, bmp and tiff device.