Re: [l2h] Already generated image inclusion
Hi Herb,
Great to hear from you after so long.
I just stumbled on this possible solution to a previously posted
question of how to include an already generated (bitmap) image
into both the html and ps versions of the document. It is not
documented, but it works too well for it not to have been a
designed feature.
Yes.
The latest versions of LaTeX2HTML have revamped graphics.perl
and graphicx.perl via a new module graphics_support.perl
written by Bruce Miller of NIST.
In this example, my already generated images are in gif format,
and are located in the snaps directory relative to my latex
source.
%
% Allow the insertion of gif images from the snap directory.
%
\usepackage{graphicx}
\DeclareGraphicsExtensions{gif}
\DeclareGraphicsRule{.gif}{eps}{.bb}{`giftopnm #1|pnmtops -noturn -rle}
\graphicspath{{snaps/}}
\newlength{\gifwidth}
%
% The \showimage command displays a gif image in html,
% and a PostScript version of it in the ps document. The optional
% argument 'width' overrides the natural width of the image.
%
% Usage: \showimage{image}{caption}
% \showimage[width]{image}{caption}
%
\newcommand{\showimage}[3][0.9\textwidth]{%
\setlength{\gifwidth}{#1}
\begin{figure}[htb]
\begin{center}
\vspace{1ex}
\includegraphics[width=\gifwidth]{#2.gif} \\
\caption{\label{#2}#3}
\hrulefill\htmlrule
\end{center}
\end{figure}
}
Apparently, latex2html is smart enough to not attempt to convert
an image with the .gif extension into PostScript. Instead, it
simply inserts the image reference into the html file. The latex
Bruce's coding allows support of many more graphics formats. It first
determines whether a conversion is necessary or not, by looking at the
filename suffix for whatever files it can find in the local directory
having the correct prefix, then it makes use of many more of the various
netpbm modules to do any required conversions or transformations.
Essentially *all* of the options to LaTeX's \includegraphics command are
supported, including rotations, scaling and cropping to a specified size.
version instructs dvips to convert the gif to PostScript on the fly.
It does, however, require you to precompute the size of the gif
file in a nonbinary format that latex can read. You can do this
in a makefile via
%.bb: %.gif
giftopnm $ | pnmtops -noturn -rle | grep BoundingBox $@
and listing the .bb files as dependencies to the .dvi file.
You might try this with .png images by making the appropriate
changes to the \showimage macro, and declaring a different
GraphicsRule to convert png to ps.
PS - I can see that a lot of improvements have been made to lates2html
since the lst time I worked it. Ross, I'm glad to see that you're
still very actively involved!
It gets a bit of tinkering when someone reports abnormal behaviour which
can be traced to being a real bug. (That doesn't happen very much anymore,
thanks to the great work that has been put in over the years by many people,
yourself included.)
All the best, and have a great New Year
Ross
--
/---+---\
| Herbert Swan | Geoscience Operations |
| Phillips Alaska, Inc. | |
| 700 G Street | Phone: (907) 263-4043|
| Anchorage, AK 99501 | Fax:(907) 265-1608|
| Room: PTO 1340 | e-mail: [EMAIL PROTECTED] |
\---+---/
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
Re: [l2h] already generated image inclusion
[EMAIL PROTECTED] wrote:
\includegraphics[scale=\imgscale]{figs/4a_sbs-build-image1.\sbsext}
What's \sbsext ?
Why don't you just leave off the extension entirely let the graphics
package choose? For latex/dvips it'll choose .ps or .eps; for
latex2html it'll prefer a .gif, .jpg or .png if it can find one.
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
Re: [l2h] already generated image inclusion
[EMAIL PROTECTED] wrote:
Well,
I think I spoke too fast. All my tests were local and were working.
However, the problem is that the SRC arguments of the IMG tags are
absolute ie something like
/home/ben/oscar/doc/dev/install/figs/my_fig.png
I'm not sure which problem you're reporting with which solution,
since I seem to be only getting parts of the conversations out-of-sync.
Ross is describing the powerfull, fully-general approach of conditionalizing
the source so that you say explicitly what should go into the LaTeX
runs vs. what should go into the HTML runs.
I'm describing the much simpler approach using only the graphic(s|x)
package;
handy -- when it applies -- because the source works for any processor.
The graphicx solution _should_ copy the source image to the destination
directory -- it works for me. Certainly in the simple cases where
the image is in the same directory as the tex, or a subdirectory,
say figs, then \includegraphics{figs/my_fig} ought to work.
When I originally wrote it ( ??? or did I add that feature to a local
copy ??? ), I tried to preserve the local structure
(eg. it would put my_fig.png in a subdirectory figs in the html destination
directory), to avoid name conflicts. That doesn't seem to be in the
currently distributed version -- maybe it was removed for portability,
or maybe it wasn't in the version I submitted (Ross; does this ring
any bells with you?).
At any rate, currently, it'll just put the image in the same directory
with the html -- but you're not seeing the image being copied at all ???
I would like to have a relative path (ie just figs/) so that it can
work directly on the web server.
Exactly what it _should_ do
I tried to play with the prefix argument but without success. Is there a
simple way to do it without to much sed-ing ?
Ben
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
Re: [l2h] already generated image inclusion
Hello,
Ross is describing the powerfull, fully-general approach of conditionalizing
the source so that you say explicitly what should go into the LaTeX
runs vs. what should go into the HTML runs.
Yes. This approach is working perfectly however it implies two things
that I'm not sure I can/will have :
1) time to modify all the existing doc (several hundreds of pages and 50
or so files)
2) have every developper change to generate valid latex2html code.
I'm describing the much simpler approach using only the graphic(s|x)
package;
handy -- when it applies -- because the source works for any processor.
Yes and that is exactly what I was looking for !
The graphicx solution _should_ copy the source image to the destination
directory -- it works for me. Certainly in the simple cases where
the image is in the same directory as the tex, or a subdirectory,
say figs, then \includegraphics{figs/my_fig} ought to work.
The problem was completely solved when I mention my version of
latex2html:
latex2html -v
This is LaTeX2HTML Version 2K.1beta (1.62)
by Nikos Drakos, Computer Based Learning Unit, University of Leeds.
Ross Moore suggest that I upgrade certain packages :
$LATEX2HTMLDIR/styles/{graphics,graphicx,graphixx,graphics-support}.perl
and after doing so, it worked exactly as expected and as you explained
it to me : images are copied into the directory where l2h generate it's
files and links are relative so that it can easily be transferred to the
web server and fullt functionnal at tha point.
Thank you very much for your help.
Ben
--
Benoit des Ligneris Etudiant au Doctorat -- Ph. D. Student
Web :http://benoit.des.ligneris.net/
President du - GULUS - president http://www.gulus.org/
Mydynaweb Developpe(u)r: http://mydynaweb.net/
GPG/PGP Key http://benoit.des.ligneris.net/linux/gpg.txt
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
Re: [l2h] already generated image inclusion
Hello,
I'd like to use already generated images (png) in a converted latex2html
document for the OSCAR project (oscar.sf.net).
Original images are screenshots and are then converted to eps automatically.
I wonder how to use the original images (png) into the HTML document
rendered by latex2html. The default behavior is to convert images to png
with a given scale factor which produce a poor quality output
(png-eps-png !).
\usepackage{html}
\htmladdimg[options]{URL}
It worked but I've got now another problem ! I don't wan't my images to
be include twice (one automatically generated from the eps and the other
one added with the \htmladdimg command).
I tried to play with the \latex and \begin{latexonly}... commands and
environments but without success. Most of the time, my figure
environment are complex and include some subfigure but without
success. However, after several trial and error, this solution is still not working
;-((
Here is a code sample of a typical figure with the:
\begin{figure}[ht!]
\htmladdimg{figs/4a_sbs-build-image1.png}
\htmladdimg{figs/4b_sbs-build-image2.png}
\htmladdimg{figs/4c_sbs-build-image3.png}
\begin{latexonly}
\begin{center}
\centerline{
\includegraphics[scale=\imgscale]{figs/4a_sbs-build-image1.\sbsext}
}
\vspace{\imgvskip}
\centerline{
\includegraphics[scale=\imgscale]{figs/4b_sbs-build-image2.\sbsext}
\hspace{\imghskip}
\includegraphics[scale=\imgscale]{figs/4c_sbs-build-image3.\sbsext}
}
\end{center}
\end{latexonly}
\caption{Step 2 -- Building the image.}
\label{fig:sbs-build-image}
\end{figure}
However, it does not work at all : no figure is present in the HTML
document. What is the proper procedure to have the awaited behavior ?
Maybe I can now refine my initial question / feature request :
Is it possible that, if an included image of the same name (but with a bitmap
extension (.gif, .png, .jpg) is already present in the same directory of
the image, latex2html use (and copy?) the bitmap image instead of an
automatically generated bitmap image from the original (well, from
LaTeX and LaTeX2Html point of vue !!).
I think that this will allow documents that use eps generated images (ie from
bitmap images like screenshots) to be directly usable with latex2html with a very good
quality and without any modification/specific code to the original LaTeX
document.
Once again, if such a feature exists, I'm sorry for the rethinking and
requestionning !
Ben
--
Benoit des Ligneris Etudiant au Doctorat -- Ph. D. Student
Web :http://benoit.des.ligneris.net/
President du - GULUS - president http://www.gulus.org/
Mydynaweb Developpe(u)r: http://mydynaweb.net/
GPG/PGP Key http://benoit.des.ligneris.net/linux/gpg.txt
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
Re: [l2h] already generated image inclusion
Hello,
\usepackage{html}
\htmladdimg[options]{URL}
It worked but I've got now another problem ! I don't wan't my images to
be include twice (one automatically generated from the eps and the other
one added with the \htmladdimg command).
I tried to play with the \latex and \begin{latexonly}... commands and
Yes; that is the right approach.
But you can use the *conditional comments* :
%begin{latexonly}
...
...
...
%end{latexonly}
which simplify the processing for LaTeX (since it just ignores them,
and doesn't require the extra wrapping of an environment).
environments but without success. Most of the time, my figure
environment are complex and include some subfigure but without
success. However, after several trial and error, this solution is still not working
;-((
Here is a code sample of a typical figure with the:
\begin{figure}[ht!]
\htmladdimg{../figs/4a_sbs-build-image1.png}
\htmladdimg{../figs/4b_sbs-build-image2.png}
\htmladdimg{../figs/4c_sbs-build-image3.png}
^^^
your images are in a subdirectory of the parent directory
\begin{latexonly}
\begin{center}
\centerline{
\includegraphics[scale=\imgscale]{figs/4a_sbs-build-image1.\sbsext}
}
\vspace{\imgvskip}
\centerline{
\includegraphics[scale=\imgscale]{figs/4b_sbs-build-image2.\sbsext}
\hspace{\imghskip}
\includegraphics[scale=\imgscale]{figs/4c_sbs-build-image3.\sbsext}
}
\end{center}
\end{latexonly}
\caption{Step 2 -- Building the image.}
\label{fig:sbs-build-image}
\end{figure}
However, it does not work at all : no figure is present in the HTML
document. What is the proper procedure to have the awaited behavior ?
Your figures are 1-level higher in the directory tree, than where the HTML
pages reside. You must include the extra ../ to account for this.
\htmladdimg takes an arbitrary URL (could be anywhere on the web)
as parameter, so it is up to you to get it right.
Once again, if such a feature exists, I'm sorry for the rethinking and
requestionning !
You need to think about the directory structure that results,
after the LaTeX2HTML job has been done.
Hope this helps,
Ross
Ben
--
Benoit des Ligneris Etudiant au Doctorat -- Ph. D. Student
Web :http://benoit.des.ligneris.net/
President du - GULUS - president http://www.gulus.org/
Mydynaweb Developpe(u)r: http://mydynaweb.net/
GPG/PGP Key http://benoit.des.ligneris.net/linux/gpg.txt
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
___
latex2html mailing list
[EMAIL PROTECTED]
http://tug.org/mailman/listinfo/latex2html
