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From: Christian F. <cfe...@go...> - 2010-10-11 09:04:04
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Hi Stefan,
your example can be externalized successfully.
It only requires a special way to do so: when I compile the document (it is
called "P.tex") with
pdflatex -shell-escape P
I get
! Package tikz Error: Sorry, the system call 'pdflatex -shell-escape
-halt-on-error -interaction=batchmode -jobname "P-figure_crossref0"
"\def\tikzexternalrealjob{P}\input{P}"' did NOT result in a usable output
file 'P-figure_crossref0' (expected one of .pdf:.jpg:.jpeg:.png:). Please
verify that you have enabled system calls. For pdflatex, this is 'pdflatex
-shell-escape'. Sometimes it is also named 'write 18' or something like
that. Or maybe the command simply failed? Error messages can be found in
'P-figure_crossref0.log'. If you continue now, I'll try to typeset the
picture.
The file P-figure__crossref0.log contains more details:
! Package tikz Error: Sorry, image externalization failed: the resulting
image was EMPTY. I tried to externalize 'P-figure_crossref0', but it seems
there is no such image in the document!?
You are currently using 'mode=convert with system call'. This problem can
happen if the image (or one of the images preceeding it) was declared inside
of a \label{} (i.e. in the .aux file): 'convert with system call' has no
access to the main aux file.
Possible solutions in this case:
a) Try using 'mode=list and make',
b) Issue the externalization command 'pdflatex -shell-escape
-halt-on-error -interaction=batchmode -jobname "P-figure_crossref0"
"\def\tikzexternalrealjob{P}\input{P}"' *manually* (also check the
preceeding externalized images, perhaps the file name sequence is not
correct).
Repeat: the resulting image was EMPTY, your attention is required .
I chose to follow the advice of step (b), afterwards everything worked.
You can find background details concerning this stuff in the manual, Section
7 "Import/Export From Other Formats" in paragraph "Support for Labels and
References In External Files". The tikz developer version manual also
contains (perhaps even more detailed) information about the externalization.
The steps above rely on a recent pgfplots version (I used pgfplots 1.4.1 or,
more precisely, the unstable dev version on top of it).
I hope this helps you. If not, it would help if you could post the log
file(s) of your minimal example as well.
Best regards
Christian
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