Graphics, Figures & Tables ⇒ caption alignment in longtable

[yaakov]

hey guys,

following problem: im using longtable and want the caption to be align to the very left, not in the center. i read that the caption-package should do its job also in longtable, but it seems it doesnt work. in the preamble i added the option: justification=RaggedRight

here is my code:

Code: Select all

\documentclass[english,headsepline,headings=normal,bibliography=totocnumbered,version=first,a4paper,numbers=noendperiod]{scrreprt} 
\renewcommand{\rmdefault}{phv}
\setcounter{tocdepth}{4}
\setcounter{secnumdepth}{4} 
\usepackage[tablewithin=none,figurewithin=none,justification=raggedright,singlelinecheck=false]{caption} 
\usepackage[english]{babel} 
\usepackage{color}
\usepackage{longtable}
\usepackage{ucs}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc} 
\usepackage{color}
\usepackage{longtable}
\usepackage{ucs}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc} 
\usepackage{textcomp}
\usepackage[automark]{scrpage2}
\usepackage{alltt}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{url}
\usepackage{booktabs,tocbasic,natbib} 
\usepackage{multirow}
\usepackage{array}
\usepackage{units} 
\usepackage{changepage}
\usepackage[colorlinks=true]{hyperref}
\begin{document}
\chapter{TEST}
\section{test page}
this is a test page for various things.
\begin{longtable}{lrlll}
\caption{bla bla bla.} \\
	\toprule 
  Buffer & & Composition  &  & Comments \\  % \multicolumn{1}{l}{Buffer}
	\midrule
\endhead	
	
	\textit{Media} \tabularnewline
	\cline{1-1} \tabularnewline
	2x YT &	31g	& 2x yeast tryptone mix & &	per liter	 \\
	& \\
	TYH -ADD REF. &			 20g & tryptone        & & per liter; pH 7,2 calibrated with KOH \\
			&			 10g & yeast extract   &  & \\
			& 		 11g & HEPES				 		&  & \\
			&			 5g  & NaCl					 	&  & \\
			&			 1g  & MgSO$_{4}$			&  & \\
	&\\
	2x YT-Agar & 15,5g & 2xYT 	  &		 & per 500mL \\
						 & 1\%   & glucose	&	 & w/v	\\
						 & 1.5\% & agar	   	&	 & w/v	\\
	&\\
						 
	\textit{SDS-PAGE \& Western Blot} \\
	\cline{1-1} \\
	SDS electrophoresis buffer &			 25mM & TRIS       &   & \\
														 &			192mM & glycine   &  \\
			                       & 	    0,1\% & sodium dodecyl sulfate		& & w/v \\
	&\\			
	Upper TRIS	& 125mM & TRIS & & pH 6.8 \\
							& 0.4\% & sodium dodecyl sulfate &  & w/v \\
	&\\
	Lower TRIS	& 375mM & TRIS & & pH 8.8 \\
							& 0.4\% & sodium dodecyl sulfate & & w/v \\
	&\\
	5x SDS Sample Buffer &  175mM & TRIS        & & pH 6.8 \\
	- reducing -      &			 50\% & glycerol    &  & v/v \\
		              	& 		 10\% & sodium dodecyl sulfate	&  & w/v \\
			              &			 5\%  & $\beta$$-$ mercaptoethanol 	& & v/v \\
			              &		0.15\%  & bromphenol blue    			&  & w/v \\
	&\\
	5x SDS Sample Buffer &  175mM & TRIS        &  & pH 6.8 \\
	- non-reducing -     &	 50\% & glycerol    &  & v/v \\
		              	& 		 10\% & sodium dodecyl sulfate	&  & w/v \\
			              &			 10mM & iodacetamid	&  & v/v \\
			              &		0.15\%  & bromphenol blue    			&  & w/v \\
	&\\
	Wet Western Blot Buffer &  48mM & TRIS        &  & pH 9.2 \\
										&	 39mM & glycine    &  &  \\
		              	&  20\% & methanol	&  & v/v \\
	&\\
	
  \textit{Agarose Gels} \\
	\cline{1-1} \\
	TAE Buffer			 &			 40mM & TRIS       &   & \\
									 &			  5mM & sodium acetate  & &  \\
			             & 	      5mM & acetic acid		& & w/v \\
			             &			  1mM & Na${_2}$*EDTA*2H${_2}$O &  &  \\
	&\\			
	6x DNA Loading Buffer			 &			 0,25\% & bromphenol blue      & & w/v    \\
									 &	   0,25\% & xylene cyanole   & & w/v  \\
			             & 	     40\% & sucrose		& & w/v \\
	&\\			
	10x Orange G DNA Buffer	 &			 4,42mM & Orange G   & & w/v  \\
								        	 &	       30\% & glycerol   & & w/v  \\
	&\\			
	
  \textit{IMAC Purification} \\
	\cline{1-1} \\
	TBS 400   			 &		  100mM & TRIS       &   & pH 8 \\
									 &			400mM & sodium chloride  & &  \\
	&\\	
	TBS-W     			 &		  100mM & TRIS       &   & pH 8 \\
									 &			400mM & sodium chloride  & &  \\
									 &			 20mM & imidazole  & &  \\
	&\\	
	TBS-W     			 &		  100mM & TRIS       &   & pH 8 \\
									 &			400mM & sodium chloride  & &  \\
									 &			250mM & imidazole  & &  \\
									 &			 10\% & glycerole  & &  \\
	&\\
\label{tab:test}
\end{longtable}
\end{document}

anyone got an idea of how to align that caption to the left?

thanks a lot in advance!

cheers yaakov

[gmedina]

Hi,

maybe it has something to do with the \LTcapwidth length defined by the longtable package to control the caption width, but I'm not sure. Anyway, you can use the margin option for the \captionsetup command:

Code: Select all

\documentclass[english,headsepline,headings=normal,bibliography=totocnumbered,version=first,a4paper,numbers=noendperiod]{scrreprt} 
\usepackage[tablewithin=none,figurewithin=none,singlelinecheck=false]{caption} 
\usepackage{longtable,booktabs}

\begin{document}
\chapter{TEST}
\section{test page}
this is a test page for various things.

text text
\begin{longtable}{lrlll}
\captionsetup{margin=-14pt}
\caption{bla bla bla.} \\
   \toprule 
  Buffer & & Composition  &  & Comments \\  % \multicolumn{1}{l}{Buffer}
   \midrule
\endhead   
   \textit{Media} \tabularnewline
   \cline{1-1} \tabularnewline
   2x YT &   31g   & 2x yeast tryptone mix & &   per liter    \\
   & \\
   TYH -ADD REF. &          20g & tryptone        & & per liter; pH 7,2 calibrated with KOH \\
...
\label{tab:test}
\end{longtable}

\end{document}

[yaakov]

thx for the fast reply!

i noticed a mistake... since my last column 'comments' was too long, caption wasnt positioned as it should. so i took off 'pH 7,2 calibrated with KOH' --> now i get a proper alignment...

but there is a resulting question to it: i then aligned longtable with the option [l] to the left. but the table itself is not as wide as the text.

so how do i set longtable to the textwidht?

thanks!