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rlbarter / superheat

An r package for generating beautiful and customizable heatmaps
https://rlbarter.github.io/superheat/
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Issue with pdf display #5

Closed crg-eilslabs closed 7 years ago

crg-eilslabs commented 7 years ago

Hi,

I am running superheat under R-3.2.2, and have an issue when storing the heatmaps in pdf format. The colors in the cells are blurred, and do not follow sharply the cell contour (see attachment). This does not happen when storing in png, where it looks as expected.

Any idea ?

Thanks ! Carl

screenshot 2017-02-15 14 36 40

rlbarter commented 7 years ago

Hi,

The PDF issue is something that has been noted, and I'm honestly not sure what causes it, other than the fact that PDF isn't really designed for dense high resolution images. I'd suggest saving as png.

rlbarter commented 7 years ago

Closing due to no followup questions. Feel free to re-open!

rlbarter commented 7 years ago

FYI... I actually just encountered this issue myself - it seems to be an issue with the pdf viewer rather than superheat itself. For example when using the RStudio pdf viewer the image is blurry, but if I open it in Adobe Acrobat Reader, it is clear.

rlbarter commented 7 years ago

See this stack overflow conversation: http://stackoverflow.com/questions/29568923/geom-raster-comes-out-smeared-when-saving-to-pdf