[tex4ht] Black stripe on formula rendering

[Giuseppe Pica]

Hi Michal,
thanks for your fast reply.
My project is very huge, because I'm using the same latex source for 
dynamic help (tex4ht) and printing (pdflatex).
My latex preamble loads many many packages, but I have no problems 
except that in some formulas. It seems to happen in the formulas that 
make use of the cases environment.
I also tried to use:      \left{   \begin{array} ... \end{array} \right.
but the problem is the same.
However, there are cases where the "cases" environment does not give me 
problems.
Regards.
-j




Il 10/02/2015 16:21, Michal Hoftich ha scritto:
> Hi Giuseppe,
>
> could you please post minimal working example which produces the
> error? When I tried
>
> -----
> \documentclass{article}
> \begin{document}
> \[
> k_v=\min\begin{cases}
>   1  \\
> \frac{k_{n}(1+\frac{1,1i^{1,5}}{\sqrt{h}})}{\sqrt{h}(\sqrt{\alpha(1-\alpha)}+0,8\frac{x}{h}\sqrt{\frac{1}{\alpha}-\alpha^{2}})}
> \\
> \end{cases}
> \]
> \end{document}
>
> the output was correct. So maybe the problem is with some package you use.
>
> Regards,
> Michal
>
> 2015-02-10 12:39 GMT+01:00 Giuseppe Pica <jospic at gmail.com>:
>> Hi,
>> the following latex code produces a black stripe as shown in figure.
>>
>> \[
>> k_v=\min\begin{cases}
>>   1  \\
>> \frac{k_{n}(1+\frac{1,1i^{1,5}}{\sqrt{h}})}{\sqrt{h}(\sqrt{\alpha(1-\alpha)}+0,8\frac{x}{h}\sqrt{\frac{1}{\alpha}-\alpha^{2}})}
>> \\
>> \end{cases}
>> \]
>>
>> http://www.iperspace.it/main121x.png
>>
>> How can I fix this?
>> Thanks in advance.
>> Regards
>> -j