Dear All,
I have a problem with Latex equation formatting
My equation is exceeding the column width and the equation label is miss aligned.
Can someone suggest me a solution ?
I have attached the code and the resultant pdf for refrence
\documentclass[twocolumn]{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
r = \dfrac{N\sum HR_{video}HR_{gt}
- \sum HR_{video} \sum HR_{gt} }
{\sqrt{[\sum N HR_{video}^{2}-(\sum HR_{video})^{2}]
[\sum N HR_{gt}^{2}-(\sum HR_{gt})^{2}]}}
\label{eq:eqr}
\end{equation}
\end{document}
Try this:
\begin{align}
&r = \nonumber\\
& \dfrac{N\sum HR_{video}HR_{gt}
- \sum HR_{video} \sum HR_{gt} }
{\sqrt{[\sum N HR_{video}^{2}-(\sum HR_{video})^{2}]
[\sum N HR_{gt}^{2}-(\sum HR_{gt})^{2}]}}
\label{eq:eqr}
\end{align}
or this
\begin{align}
&r = \nonumber\\
& \dfrac{N\sum HR_{video}HR_{gt} - \sum HR_{video} \sum HR_{gt} }
{\sqrt{[\sum N HR_{video}^{2}-(\sum HR_{video})^{2}]}}\nonumber\\
& \cdot \dfrac{1}{ \sqrt{\sum N HR_{gt}^{2}-(\sum HR_{gt})^{2}}}
\label{eq:eqr}
\end{align}
Check it here
https://www.latex4technics.com/
You could also place the equation in a scalebox or resizebox.
\scalebox{0.8}{equation here}
Disadvantage is that the font size will probably too small.
@Dominik Strzałka Thanks a lot.... That's awesome, and thanks for the website
I am usually using "eqnarray" (see example below) which allows to brake equations and also to shrink space by using \hspace*{-10mm}, \!, etc.
\begin{eqnarray}
&&\hspace*{-10mm} \Big( \sum_{h} P [ h]\, \rme^{ z J\sqrt{\frac{\beta}{n\rho}} h } \Big)^{K-1}
=\sum_{\{\mathcal{N}[h]\}}\frac{(K-1)!}{\left\{\prod_h \mathcal{N}[h]!\right\}}\left\{\prod_h P^{\mathcal{N}[h]} [ h]\rme^{ z J\sqrt{\frac{\beta}{n\rho}} \mathcal{N}[h]h } \right\}\nonumber\\
%
&&\hspace*{15mm} =\sum_{\{\mathcal{N}[h]\}}\!\frac{(K\!-\!1)!}{\left\{\prod_h \mathcal{N}[h]!\right\}}\left\{\prod_h P^{\mathcal{N}[h]} [ h]\right\}\rme^{ z J\sqrt{\frac{\beta}{n\rho}} \sum_h\mathcal{N}[h]h }\label{eq:multi},
\end{eqnarray}
Hi! This solution will probably not be appropriate for scientific journals, but I post it to offer another approach. You could also temporarily change the margins. For this, you would need to add
\def\changemargin#1#2{\list{}{\rightmargin#2\leftmargin#1}\item[]}
\let\endchangemargin=\endlist
to your preamble. It is then possible to widen (or shrink) the margins by enclosing your LaTeX code into
\begin{changemargin}{-1.5cm}{-1.5cm}
\end{changemargin}
Attached you can see the result for the equation that you posted. Please note, that it is possible for your equation to fit into the standard column width if some substitute symbols are used - also included in the file attached.
Hope this helps.
Greetings,
You can also use the online editor " overleaf " and directly obtain documents in pdf format, for example:
https://www.overleaf.com/6306791thfmxx#/21188595/
The examples in "math mode" can be very useful , for layout complex equations.
ftp://ftp.dante.de/tex-archive/info/math/voss/mathmode/Mathmode.pdf
Best regards,
Ender Araujo
Simple and best way is explained here in my video. - Dealing long equation in Latex - How to linebreak a equation in latex
https://www.youtube.com/watch?v=zCzf6tEPmLE
Tricky one. I would go with something like this:
\begin{equation}
r = \dfrac{A - B}{\sqrt{[C - D] [E - F]}}
\label{eq:eqr}
\end{equation}
where
\addtocounter{equation}{-1}
\begin{subequations}
\begin{align}
A &= N \sum \mathit{HR}_\mathrm{video} \mathit{HR}_\mathrm{gt} \\
B &= \sum \mathit{HR}_\mathrm{video} \sum \mathit{HR}_\mathrm{gt} \\
C &= \sum N \mathit{HR}_\mathrm{video}^{2} \\
D &= \left(\sum \mathit{HR}_\mathrm{video}\right)^{2} \\
E &= \sum N \mathit{HR}_\mathrm{gt}^{2} \\
F &= \left(\sum \mathit{HR}_\mathrm{gt}\right)^{2}
\end{align}
\end{subequations}
See the attached file for an example of what it looks like.
Notes:
1) I changed HR to \mathit{HR}. If HR is a single variable, I would recommend doing this, as \mathit{} removes the white space between the H and R.
2) Footscripts that are not variables should be typed in roman, therefore I enclosed "video" and "gt" with \mathrm{}.
3) Use \left( and \right) to correctly size your brackets.
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