Eps/pdf rendering: imported figures appear smoothed


Does anyone know if the eps/pdf interpreter can be changed in omnigraffle to not apply automatic smoothing?

I am importing some eps figures created with an external program (Matlab). In omnigraffle, some transitions appear smoothed that weren’t in the original files. From googling the problem, I found that the issue is not omnigraffle-specific - it’s due to the default settings of many mac eps/pdf readers. Here’s an explanation about why some most mac programs smooth the exported images: http://stackoverflow.com/questions/6614207/how-to-export-non-blurry-eps-images
Following the instructions from this link, I was able to open the crisp figures in ghostview. However, they go back to being smoothed when I import them into omnigraffle. I am wondering if there’s a way to change the default renderer to not apply automatic smoothing within omnigraffle.

Thanks, Andrew