ggsave saves blurred pdf on mac osx mavericks

[Simone Gabbriellini]

Dear all,

I am facing an issue trying to ggsave my plots, which are rendered perfectly on screen. However, when I try to ggsave to pdf, I have a strange result: axes, title and legend are crispy clear, but the main area of the plot is blurred like in the attached file... I am on Mac osx 10.9.1 with R 3.0.2 and ggplot2 0.9.3.1

I use this code to plot and save:

ggplot(tdm, aes(x = Var2, y = Var1, fill = factor(value))) +

    labs(x = "Cost", y = "Benefit", fill = "Value", title="10 nodes, den=0.7") +

    geom_raster() +

    scale_fill_manual("Legend", limits = 0:9, breaks = breaks, values = col, labels=labels) +

    theme(plot.background = element_rect(fill = "grey90"),

          legend.background = element_rect(fill = "grey90")) +

    scale_x_continuous(expand = c(0, 0)) +

    scale_y_continuous(expand = c(0, 0))

ggsave("experimental results/10-0.7.pdf")

Any advice more than welcome!

best regards,

Simone

[Brandon Hurr]

Your attachment does not look blurry to me on gDrive or in preview (Mac). 

The blocks are clear and crisp. 

Could you take a screen shot? 

B

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[baptiste auguie]

Hi,

My guess is that your pdf viewer does some interpolation of the raster. Preview and Adobe Reader have options to turn this off.

HTH,

b.

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[Dianne Cook]

Simone,

I don’t have a problem with this plot. Same system set up, Suspect it is your geom_raster?

cheers,

Di

> library(ggplot2)

> qplot(x, y, order=order, group=group, data=oz_all, geom="polygon", 

+       fill=AREA_SQKM) + theme_bw()

> ggsave("tmp.pdf")

Saving 11.2 x 6.15 in image

[Simone Gabbriellini]

thanks for the reply, here's the screenshot attached

I don't know why this happens, if the problem is my raster_geom()
where should I look for some advices?

Best,
Simone

--
-----------------------------------------------------------------

Simone Gabbriellini, PhD

Post-doctoral Researcher
ANR founded research project "DIFFCERAM"
GEMASS, CNRS & Paris-Sorbonne.

mobile: +39 340 39 75 626
email: simone.ga...@cnrs.fr

[baptiste auguie]

On 7 February 2014 11:13, Simone Gabbriellini <simone.ga...@gmail.com> wrote:

thanks for the reply, here's the screenshot attached

I don't know why this happens, if the problem is my raster_geom()
where should I look for some advices?

pdf viewer preferences?

[Simone Gabbriellini]

wow, thanks a lot, the Italian translation of this property is something so absurd and meaningless I would have never find it out by myself.

best,

Simone

[Maarten Slagter]

I'm experiencing the same issue in Preview version 10.0, Mac OS 10.13.6 (High Sierra). Unfortunately, this option in the settings is not present anymore. Is there any way of encoding the option to not smooth right in the pdf itself?

Cheers, Maarten

[Maarten Slagter]

Using geom_tile() rather than geom_raster() did the trick for me :)

-M