Here is how I got around the black-bar problem:
https://ccrma.stanford.edu/~jos/webpub/Eliminating_Black_Rules_Equation.html
- jos
At 12:15 PM 4/11/2011, Pat Somerville wrote:
Thanks, Nasser M. Abbasi, for kindly taking the time to reply to
me. I found the file /usr/lib/latex2html/l2hconf.pm. In it among
other lines the following lines existed, but not necessarily consecutively:
$DVIPSOPT .=" -E"; (Please notice the period before the equals sign.)
$MATH_SCALE_FACTOR=1.6;
#$DISP_SCALE_FACTOR=1;
So after receiving your e-mail letter I changed two of those lines to read:
$MATH_SCALE_FACTOR=1.8;
$DISP_SCALE_FACTOR=1.0;
.
Results in the .html file produced by LaTeX2HTML: The black line
segment under the integral sign with the limits of integration
having algebraic fractions in them was removed. But the black line
segments under integral signs produced from the LaTeX commands
containing \int\limits _{-\infty}^{+\infty} remained. Those were
probably among 27 reported errors on 27 images. I don't know with
which images all of the other errors were. But I think I remember at
least one pnmcrop-related error while latex2html was processing my .tex file.
Next I changed to $MATH_SCALE_FACTOR=2.0; in the file l2hconf.pm and
otherwise did not change any other lines in that file.
Results: There were errors on 27 images. The black segment under
the integral sign with algebraic fractional limits returned.
Continuing with the same settings in l2hconf.pm I made a test, .tex
file containing some commands very similar to
\begin{equation}
\int\limits _{-\infty}^{+\infty}
\end{equation}
and then produced a .html file from that .tex file using a
latex2html... command. In the resulting .html file a black line
segment existed under the integral sign with the limits of positive
and negative infinity. What should I do now to try to eliminate the
unwanted black line segments under some of the integral signs? Note
also that there were also around 20 images with errors reported
while latex2html attempted to generate them; and in detail I don't
yet know what obvious problems there were, if any, with the
associated mathematical symbols associated with the images for which
errors were reported by LaTeX2HTML.
Pat
--------------------------------------------------
From: "Nasser M. Abbasi" <n...@12000.org>
Sent: Monday, April 11, 2011 1:37 AM
To: <latex2html@tug.org>
Subject: Re: [l2h] Black bars under integral signs when the limits
ofintegrationare -\infty and +\infty or an algebraic
fraction for each of the upper and lower limits
On 4/10/2011 10:29 PM, Pat Somerville wrote:
Question: What can I do to eliminate all of such examples of
unwanted black bars
underneath some of the integral signs?
This sounds like the same known problem which was mentioned here
some time ago?
Check http://12000.org/my_notes/l2hwin/index.htm and look for
item (2) under "some errors and possible solutions"
Here it is:
"some of the bitmap images produced for the mathematics in the
document have a solid dark bar, usually at the bottom or the
side of the bitmap image. The reason for this is unknown.
But I found by trial and error that setting the following
values in my l2hconf.pm eliminated most if not all of these
$MATH_SCALE_FACTOR = 1.8;
$DISP_SCALE_FACTOR = 1.0;
"
Something to try to see if it will fix your problem.
--Nasser
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