Support for formula elements

[ImtiazHiader]

Does jlatexmath support following Elements? I am getting exception while processing them:

• equation
  org.scilab.forge.jlatexmath.ParseException: Unknown environment: equation at position 1:2

• eqnarray*, align* (eqnarray and align are working without *)
  org.scilab.forge.jlatexmath.ParseException: Unknown environment: eqnarray* at position 1:2

• \nonumber
  org.scilab.forge.jlatexmath.ParseException: Problem with command [ at position 2:343 Problem with command array@@env at position 0:311 Unknown symbol or command or predefined TeXFormula: 'nonumber'

I am generating PDF using Apache fop, jlatexmath and jlatexmath-fop.

Thanks

[murkle]

Please post the exact LaTeX syntaxes you need

[ImtiazHiader]

Thanks for quick Reply.
Actually for the following Formula:

\begin{align} y &=& x^4 + 4 \\ &=& (x^2+2)^2 -4x^2 \\ &\le&(x^2+2)^2 \end{align}
I am expecting result with Equation numbers. But If i use align* instead of align then the equation numbers should not be generated. The * should supress the numbering.

For the following Formula:
\begin{align} y &=& x^4 + 4 \\ &=& (x^2+2)^2 -4x^2 \nonumber \\ &\le&(x^2+2)^2 \end{align}

the equation 2 should not be numbered (due to \nonumber). The result should look like:

The \begin{equation} ….. \end{equation} is also not supported.

[murkle]

There's no support for automatic numbering at the moment. The more examples you can give the better eg \begin{equation} ….. \end{equation} - thanks for the nice ones so far!

Also worth noting that some existing users (eg me :) won't want that so if it's added at some point it will need to be configurable.

[ImtiazHiader]

Thanks again for your reply.
In General, the results of the API are very good.
I think equation numbering or labeling is an important feature. It would be very nice if it will added.
Is there any plan for new Version in coming days or in near future?

[murkle]

Yes, brand new version in "experimental" branch

[ImtiazHiader]

Hello,
I am using FOP and JlatexMath-FOP to generate PDF. Formulas are displaying correctly.
I Have situation:
My Formula contains a Variable. I want to create hyperlink from this variable to some Location in PDF.
Is it possible?

[raducoravu]

I have a similar problem with something like:

\begin{align*} a = \mathrm{test<float>}\end{align*}

I get an error when rendering the image:

   org.scilab.forge.jlatexmath.ParseException: Unknown environment: align* at position 0:15

If * is removed from the {align*} then the rendering starts working.
Is there any feature I can set to the TeXFormula class to make it more lenient?

[FORDEVUSE5]

we use * in LaTeX to avoid numbering multi-line formulas, which helps keep the formulas looking cleaner. Without the , the formulas are automatically numbered, which can sometimes create visual clutter. Therefore, using align is a common practice to maintain the neatness of the formulas without numbering when alignment is needed.

[Liujianxiang]

The following formula cannot be rendered:

$$
\begin{equation}
ddy=
\begin{cases}
0, & x[i]==0,\\
-ddx[i] & x \lt 0, \\
ddx[i] & x \gt 0 \\
\end{cases}
\end{equation}
$$

But we removed "\begin{equation}" and "\end{equation}", the rendering worked:

$$
ddy=\begin{cases}
0,&\text{ }x[i]==0,\\
-ddx[i]&\text{ }x<0,\\
ddx[i]&\text{ }x>0
\end{cases}
$$