General ⇒ How to align the math formula to left

[akira32]

How to align the math formula to left?
I want to let and Ttotal and Teach tile has the same x-coordinate.

There are my code about two math formula as below:

Code: Select all

\subsection{Cost Time}

The comparison of cost time of QVSM and Smart Shadow Maps Refinement is show in (Figure \ref{fig:7-costime}). If the red region is the effective shadow region and do not need split into 2x2 subtiles further.

QVSM:\\

$T_{total} = T_{eye} + T_{sm} + T_{SRT} + 4 \times T_{each tile}+ 4 \times 4 \times T_{each tile}$\\
$T_{each tile} = T_{sm} + T_{SRT}$\\

[Stefan Kottwitz]

Hi,

you could use amsmath and align, if you want to align to the relation symbol:

Code: Select all

QVSM:
\begin{align*}
T_{total} &= T_{eye} + T_{sm} + T_{SRT} + 4 \times T_{each tile}+ 4 \times 4 \times T_{each tile }\\
T_{each tile} &= T_{sm} + T_{SRT}
\end{align*}

If you want it left aligned instead, tell us.

Stefan

[akira32]

Thank you,Stefan_K.
I want to align the formulas to left.

[Stefan Kottwitz]

Like this?

Code: Select all

\usepackage[fleqn]{amsmath}
...
QVSM:
\begin{equation*}
T_{total} = T_{eye} + T_{sm} + T_{SRT} + 4 \times T_{each tile}+ 4 \times 4 \times T_{each tile }
\end{equation*}
\begin{equation*}
T_{each tile} = T_{sm} + T_{SRT}
\end{equation*}

Stefan

[akira32]

This is my preamble about the packages.

Code: Select all

\documentclass[12pt]{report}
\usepackage{thesis}
\usepackage{amsmath,amssymb}
\usepackage{float,multicol,epsfig}

\usepackage[fleqn]{amsmath}  % <====

When I add the last line, it appears an error message:

Code: Select all

! LaTeX Error: Option clash for package amsmath.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.

[localghost]

You are loading the amsmath package twice. Once with and once without the fleqn option.


Best regards
Thorsten¹

[gatoatigrado]

I have an align* that's behaving very badly -- there's a huge space after the second ampersand -- any help would be much appreciated.

Code: Select all

\begin{align*}
    \frac{\partial L}{\partial w(\hat c, \hat f)}(X, w) &= \sum_{c, x \in X}
        \frac{\partial}{\partial w(\hat c, \hat f)} &\left(
            \sum_{f \in \mathcal{F}} w(c, f) x(f) - \log \left( \sum_{c'} e^{\textstyle \sum_f w(c', f) x(f)} \right) \right)
\end{align*}

This is what it renders like (using fullpage[cm])

render error

2010-02-14_0.png (14.29 KiB) Viewed 78645 times

[localghost]

Just delete the second ampersand. It's useless in this case.


Best regards
Thorsten

[cohena100]

By using flalign and one & at the start of the line and another & at its end.

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\section*{}
Some text.
\begin{flalign*}
&T_{total} = T_{eye} + T_{sm} + T_{SRT} + 4 \times T_{each tile}+ 4 \times 4 \times T_{each tile}&\\
&T_{each tile} = T_{sm} + T_{SRT}&
\end{flalign*}
Some other text.
\end{document}
​