similar to: (PR#11509) rgb to cmyk conversion is wrong in

The conversion of RGB to CMYK takes place in PostScriptSetCol() starting at line 2900 of R-2.7.0/src/library/grDevices/src/devPS.c if(strcmp(mm, "cmyk") == 0) { double c = 1.0-r, m=1.0-g, y=1.0-b, k=c; k = fmin2(k, m); k = fmin2(k, y); if(k == 1.0) c = m = y = 0.0; else {c /= (1.-k); m /= (1.-k); y /= (1.-k);} r, g, and b have already been normalized to the

dear R experts---I am struggling with the requirements to prepare my files for my printers. I am printing in 2/2 format, which means cyan and black for me, which they take from my color-separated pdf files. R comes into play, because it produces all the figures that are embedded in my book (pdflatex). now, TeX has no problems producing CMYK files. However, R produces RGB files (for

Hi We are about to publish a book, which contains figures made with R plots. An important detail that we did not take into account is that the book will not be printed in 4 colors (cmyk mode), but only 2 (black +"spotcolor"). The spotcolor we use is part of the big Pantone family. The problem is that both pdf() and postscript() offer either rgb or cmyk, but no spotcolors such as

Dear Erich and John, thankyou for providing RColorBrewer! Are you working on options for CMYK or RGB return values? Thanks again, Darren [[alternative HTML version deleted]]

Hello all. A Journal we are sending an article to is asking for the following: To ensure the best reproduction quality of your figures we would appreciate high resolution files. All figures should preferably be in TIFF or EPS format... and should have the following resolution: Graph: 800 - 1200 DPI Photo: 400 - 800 DPI Color (only CMYK): 300 - 400 DPI (DPI = dots per inch) Since I am sending

A recent article in the earth science literature cited below and available at http://geography.uoregon.edu/datagraphics/EOS/ points out that rainbow color schemes and mixtures of green and yellow can be troublesome for people with color-deficient vision. The authors propose alternative schemes that can be viewed and downloaded in RGB, HSV, CMYK, and RGB256 formats from

Dear all, I have been trying to speed up a process we have been done in ArcGIS. We have to read a single layer TIFF (monochrome image) in . For this, I have used the "rtiff" package. After reading the TIFF file, I compared the raw values for each pixel that I have in ArcGIS to the ones obtained in R. In ArcGIS I have discrete values in the range 0..255, while in R I have continuous

hi! I would like to produce simple black and white postscript figures for publishing. A black/white or grayscale or CMYK colormodel can be used, but not RGB colours. Can I produce postscript graphs in R that satisfy this? Following an earlier advice on the help-list I have tried using Photoshop to convert - but this seems to convert the vector format into raster format - giving larger,

Greetings all - happy new year, I''m having problems getting Pdf::Writer image insertion. pdf.image "/path/to/images/logo.jpg" is firing "JPEG marker not found!" Originally created the RGB (8 bit) JPEG in photoshop. After the above, I''ve exported with an alternate tool using (OSX) preview. This tutorial

My goal is to create a graph with one column and three rows into a single graphic. The mfrow, mfcol, and layout functions all have the same effect: three graphs are produced in a single pdf file, having one graph per page. This is not what I want (I didn't want multiple pages). Just before I sent this post, I was able to generate the desired output with split.screen. Is this the expected

I've just moved over to Cups printing system and installed the 20010824 version of wine (with cops support) after removing a June 2001 version. Everything seem to work and Wine does recognize the printers on my system but when I print a document from Lotus Notes (5.05) nothing comes out of the printer. The print dialog box opens and and I can get a print preview but nothing actually

Buenas noches; Traigo una pregunta que supongo que alguno ya la tendrá resuelta, porque se me hace difícil entender algo que presupongo fácil. Quiero, según los valores de 3 o 4 variables numéricas, convenientemente escaladas, conseguir gamas de colores. Supongamos las variables numéricas: X, Y, Z; a cada variable le correspondería un color; pongamos que X = C (cian), Y = M (magenta) y Z = Y

As part of my GSoC project I have to work out a spec that covers how applications should communicate color management related properties between each other and the compositing manager. The main idea of the project is to let the compositing manager do the color management on behalf of the applications. But before that can happen, the applications have to tell the compositing manager how they want

Hello all, I discovered that the pdf device uses fonts to represent "points" symbols (as in plot(...,type="p",...) ). Namely it uses ZapfDingbats with symbol U+25cf. This can lead to problems when the font is not available, or available in another version (such as points being replaced by other symbols, or worst: slightly displaced). Furthermore, it also causes

Hi all, I am currently using the code snippet below to minimize a function which I wasn't able to minimize properly with optim (cliffy surface, constraints, poles). Obviously this iteration is probably the poorest way of implementing such a function and it is expectedly slow. I've already written some vectorized functions, but I'm afraid that I'm missing the "big

(1) ...need to speed up a monte-carlo sampling...any suggestions about how I can get R to use all 8 cores of a mac pro would be most useful and very appreciated... (2) spent the last few hours trying to get pnmath to compile under os- x 10.5.4... using gcc version 4.2.1 (Apple Inc. build 5553) as downloaded from CRAN, xcode 3.0... ...xcode 3.1 installed over top of above after

Hi, I tried PDF writer , but it doesn''t have HTML to PDF Converter. Infact it is a PDF writer itself not a converter.. I''ve HTML pages with rich css or Strings with html+css such that they are converted to PDF. The idea is that web is all about RGB color model and when it comes to Digital Printing its all CMYK color model. My html page with rich css in

The Wine development release 1.3.3 is now available. What's new in this release (see below for details): - Improved support for right-to-left text. - Support for CMYK JPEG images. - Beginnings of a Game Explorer implementation. - Improved 64-bit support in MSI. - Stub inetcpl control panel applet. - A number of fixes to crypto support. - Translation updates. - Various bug

I sent a little mail some time ago asking if there was going to be an ogg pic-format, and you replied that PNG, MNG and JNG is good enough (sorry for this late answer btw).. But, consider this: The ogg video-format (tarkin ? where do you get these names from anyway ? :) ) needs a way to compress its frames. Are you going to use MNG for that ? :) .. If you had an ogg pic format, that format could

I have included the full configure/make output: (the particular error regarding bessel_i.c is at the END of the report). -walter tautz cd build/R-1.4.0 \ && unset noclobber \ && CPPFLAGS=" " \ LDFLAGS="" \ ./configure --prefix=/software/r-1 \ --datadir=/software/r-1/data \ --libdir=/software/r-1/lib \