Re: [NTG-context] t-tikz: problem with colorspace pgfprgb

3 Mar 2008

      On Sun, 2 Mar 2008, Finn Martensen wrote:
...
2008/3/2, Aditya Mahajan :
...
...
I have the following problem with TikZ: When I use the "patterns"
library in a tikzpicture environment, the file is compiled without
problems and creates a PDF file. However, Acrobat displays an error
message "Could not find the ColorSpace named 'pgfprgb'". [...]
Can you please post a minimal example? I have compiled a few examples
 from the tikz manual by using all tikz librarries, but never had this
 problem.
It just discovered that it depends, e.g., on whether there is only one
page with a tikzpicture or more pages with tikzpictures. To give code
examples: the first works, but not the second
**************************************
Code with no problems:
**************************************
\usemodule[tikz]
\usetikzlibrary[patterns]
\starttext
\starttikzpicture
\fill[pattern=dots] (0,0) -- (0,1) -- (1,1) -- (1,0);
\stoptikzpicture
\stoptext
**************************************
Code with problems:
**************************************
\usemodule[tikz]
\usetikzlibrary[patterns]
\starttext
\starttikzpicture
\draw (0,0) -- (1,0);
\stoptikzpicture
\page
\starttikzpicture
\fill[pattern=dots] (0,0) -- (0,1) -- (1,1) -- (1,0);
\stoptikzpicture
\stoptext
I can reproduce this problem. On linux, with evince pdf viewer (2.21.91) I 
get "Error: Bad color space 'pgfprgb'", with Adobe reader (8.1.2) "Wrong 
operand type".

The example does work fine with plain TeX and LaTeX. Something 
wrong in the way patterns are handled by tikz for context. I do not think 
that anyone on this list understands the internals of TikZ. Your best bet 
is to report this to the tikz-mailing list.

Aditya