Thank you so much! Adding "node" to the value of a variable works.

Regards,
Nishan

On Fri, 24 Feb 2017 at 02:19 Arash Esbati <arash@gnu.org> wrote:

> Nishan Singh Mann <nishan.singh.mann@gmail.com> writes:
>
> > When using a tikzpicture enviornment as follows
> >   \begin{tikzpicture}
> >     \matrix[]{
> >                       % First row
> >       \node[scale=1.3,label=below:(a)]
> > {\input{./latex/CH4/dishole_schematic}}; &
> >       \node[label=below:(b)~$20$~nm]
> > {\includegraphics[scale=0.6]{./figures/CH4/hole_gen_dis_20}}; &
> >       \node[label=below:(c)~$40$~nm]
> > {\includegraphics[scale=0.6]{./figures/CH4/hole_gen_dis_41}}; \\ % end of
> > row
> >       \node[label=below:(d)~$160$~nm]
> > {\includegraphics[scale=0.6]{./figures/CH4/hole_gen_dis_160}}; &
> >       \node[label=below:(e)~$400$~nm]
> > {\includegraphics[scale=0.6]{./figures/CH4/hole_gen_dis_400}}; &
> >       \node[label=below:(f)~$800$~nm]
> > {\includegraphics[scale=0.6]{./figures/CH4/hole_gen_dis_800}};\\
> >             };
> >   \end{tikzpicture}
> >
> > The label keyword used to label the node is picked up by Reftex as a
> > valid label when the ref command is invoked. Perhaps one can avoid
> > scanning for a 'label' keyword within a tikzpicture environment?
>
> RefTeX provides a variable for this purpose:
>
> ,----[ C-h v reftex-label-ignored-macros-and-environments RET ]
> | reftex-label-ignored-macros-and-environments is a variable defined in
> ‘reftex-vars.el’.
> | Its value is nil
> |
> | Documentation:
> | List of macros and environments to be ignored when searching for labels.
> | The purpose is to ignore environments and macros that use keyval
> | style label=foo arguments, but the label has a different meaning
> | than a \label{foo}.  Standard \label{...} definitions are never
> | ignored.
> |
> | E.g., TikZ defines several macros/environments where [label=foo]
> | defines the label to be printed at some node or edge, but it’s
> | not a label used for referencing.
> |
> | Note that this feature is only supported if you are using AUCTeX
> | and the functions ‘TeX-current-macro’ and
> | ‘LaTeX-current-environment’ are bound.  Also note that this
> | feature might slow down the reftex parsing process for large TeX
> | files.
> |
> | You can customize this variable.
> |
> | This variable was introduced, or its default value was changed, in
> | version 24.4 of Emacs.
> `----
>
> You can customize this variable and add "node" if you want to ignore the
> macro or "tikzpicture" for the entire environment.
>
> Best, Arash
>
-- 
Nishan Singh Mann