Kevin Wright
2006-Oct-19 20:14 UTC
[Rd] Bug in Acrobat Reader 7 (or R?) with translucent text
My setup: R 2.4.0, Windows 2000, Acrobat Reader 7.
When I create a .pdf with translucent colors, the translucency works
correctly for points, but not for text. Below is some R code that
creates a .pdf with this phenomenon.
I was going to report this as a bug in R, but then I tried to view the
pdf with a couple of other viewers and found that at least one of the
viewers correctly displayed the file (with translucent text), so maybe
it is a bug with Acrobat Reader. It might be worth checking to see if
colors for "text" are handled any differently than colors for
"points"
that might cause this problem.
Best,
Kevin Wright
black <- rgb(0,0,0,.75)
blue <- rgb(0, .2, 1, .75)
red <- rgb(1,0,0,.75)
pdf("pdfcols.pdf", version="1.4")
set.seed(50)
plot(.5,.5,type="n",xlim=c(0,1),ylim=c(0,1))
points(runif(200),runif(200), col=black)
points(runif(200),runif(200), col=blue)
points(runif(200),runif(200), col=red)
text(.1, .1, "This is red", col=red)
text(.1, .1, "Also red", col=red)
text(.2, .2, "This is blue", col=blue)
text(.2, .2, "Also blue", col=blue)
text(.3, .3, "This is black", col=black)
text(.3, .3, "Also black", col=black)
points(runif(200),runif(200), col=black)
points(runif(200),runif(200), col=blue)
points(runif(200),runif(200), col=red)
dev.off()
Marc Schwartz
2006-Oct-19 21:03 UTC
[Rd] Bug in Acrobat Reader 7 (or R?) with translucent text
On Thu, 2006-10-19 at 15:14 -0500, Kevin Wright wrote:> My setup: R 2.4.0, Windows 2000, Acrobat Reader 7. > > When I create a .pdf with translucent colors, the translucency works > correctly for points, but not for text. Below is some R code that > creates a .pdf with this phenomenon. > > I was going to report this as a bug in R, but then I tried to view the > pdf with a couple of other viewers and found that at least one of the > viewers correctly displayed the file (with translucent text), so maybe > it is a bug with Acrobat Reader. It might be worth checking to see if > colors for "text" are handled any differently than colors for "points" > that might cause this problem. > > Best, > > Kevin Wright > > > black <- rgb(0,0,0,.75) > blue <- rgb(0, .2, 1, .75) > red <- rgb(1,0,0,.75) > pdf("pdfcols.pdf", version="1.4") > set.seed(50) > plot(.5,.5,type="n",xlim=c(0,1),ylim=c(0,1)) > points(runif(200),runif(200), col=black) > points(runif(200),runif(200), col=blue) > points(runif(200),runif(200), col=red) > text(.1, .1, "This is red", col=red) > text(.1, .1, "Also red", col=red) > text(.2, .2, "This is blue", col=blue) > text(.2, .2, "Also blue", col=blue) > text(.3, .3, "This is black", col=black) > text(.3, .3, "Also black", col=black) > points(runif(200),runif(200), col=black) > points(runif(200),runif(200), col=blue) > points(runif(200),runif(200), col=red) > dev.off()I can confirm problems on FC5 using Reader 7.0.8. The text appears opaque. An easier to see plot example might be: black <- rgb(0, 0, 0, .5) blue <- rgb(0, .2, 1, .5) red <- rgb(1, 0, 0, .5) pdf("TL.pdf", version = "1.4") plot(1, 1, type = "n") text(1.01, 1, "XXXXXXX", cex = 5, col = black) text(1.02, 1, "XXXXXXX", cex = 5, col = red) text(1.03, 1, "XXXXXXX", cex = 5, col = blue) dev.off() Using the 'Document Viewer' application on FC5, which is Evince, and xpdf, the text is clearly translucent. It's a bug in Adobe, unless there is a setting in Reader that impacts this. Reviewing and trying some (ie. CoolType, Smoothing, etc.), there is nothing immediately apparent that effects the display. PDF File attached. HTH, Marc Schwartz -------------- next part -------------- A non-text attachment was scrubbed... Name: TL.pdf Type: application/pdf Size: 2934 bytes Desc: not available Url : https://stat.ethz.ch/pipermail/r-devel/attachments/20061019/0995fcbe/attachment-0004.pdf
Steven McKinney
2006-Oct-19 23:06 UTC
[Rd] Bug in Acrobat Reader 7 (or R?) with translucent text
Hi Kevin, On my Mac, (PowerPC OS X 10.4.8) I see the same plot in Adobe reader and in the Mac preview app. Text is transluscent when overlaid by a plot icon. Text is not transluscent when overlaid by other text. (Is this expected?) Plot icons are transluscent when overlaid by other plot icons. Adobe is buggy! (I have trouble with Adobe rendering a pdf containing four scatterplots with 380000 data points each, though the Mac preview.app can render them properly.) Good luck filing a bug report with Adobe :( Adobe: Version 7.0.8 5/16/2006 R:> sessionInfo()R version 2.4.0 (2006-10-03) powerpc-apple-darwin8.7.0 locale: en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 Steven McKinney Statistician Molecular Oncology and Breast Cancer Program British Columbia Cancer Research Centre email: smckinney at bccrc.ca tel: 604-675-8000 x7561 BCCRC Molecular Oncology 675 West 10th Ave, Floor 4 Vancouver B.C. V5Z 1L3 Canada -----Original Message----- From: r-devel-bounces at r-project.org on behalf of Kevin Wright Sent: Thu 10/19/2006 1:14 PM To: r-devel at stat.math.ethz.ch Subject: [Rd] Bug in Acrobat Reader 7 (or R?) with translucent text My setup: R 2.4.0, Windows 2000, Acrobat Reader 7. When I create a .pdf with translucent colors, the translucency works correctly for points, but not for text. Below is some R code that creates a .pdf with this phenomenon. I was going to report this as a bug in R, but then I tried to view the pdf with a couple of other viewers and found that at least one of the viewers correctly displayed the file (with translucent text), so maybe it is a bug with Acrobat Reader. It might be worth checking to see if colors for "text" are handled any differently than colors for "points" that might cause this problem. Best, Kevin Wright black <- rgb(0,0,0,.75) blue <- rgb(0, .2, 1, .75) red <- rgb(1,0,0,.75) pdf("pdfcols.pdf", version="1.4") set.seed(50) plot(.5,.5,type="n",xlim=c(0,1),ylim=c(0,1)) points(runif(200),runif(200), col=black) points(runif(200),runif(200), col=blue) points(runif(200),runif(200), col=red) text(.1, .1, "This is red", col=red) text(.1, .1, "Also red", col=red) text(.2, .2, "This is blue", col=blue) text(.2, .2, "Also blue", col=blue) text(.3, .3, "This is black", col=black) text(.3, .3, "Also black", col=black) points(runif(200),runif(200), col=black) points(runif(200),runif(200), col=blue) points(runif(200),runif(200), col=red) dev.off() ______________________________________________ R-devel at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel