This is not a blog, but my notes and tips for research. Feel free to take any information and leave any comments or questions.
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Wednesday, August 25, 2010
Thursday, June 10, 2010
Eigenvalues of an Inverse Matrix
If lambda is an eigen value of a matrix A, then
1/lambda is an eigen value of the inverse matrix of A.
http://en.wikipedia.org/wiki/Inverse_eigenvalues_theorem
1/lambda is an eigen value of the inverse matrix of A.
http://en.wikipedia.org/wiki/Inverse_eigenvalues_theorem
Monday, May 3, 2010
AMBER on Macintosh: Installing g95 or gfortran with MacPorts
Here is how to install gfortran on Mac using macport.
sudo port install g95
if not working
sudo port install gcc45 +gfortran
Sunday, May 2, 2010
Migration – MacPorts
After I installed Snow Leopard, macport was not working well, especially when I tried to install texmacs and octave. Below is the site that showed me the entire step to fresh MacPort by reinstalling everything again.
Wednesday, April 28, 2010
LaTeX/Packages/Listings - Wikibooks, collection of open-content textbooks
A way to easily convert FORTRAN code to LaTex
\documentclass[11pt]{article}
%\usepackage{geometry} % See geometry.pdf to learn the layout options. There are lots.
%\geometry{letterpaper} % ... or a4paper or a5paper or ...
%\geometry{landscape} % Activate for for rotated page geometry
%\usepackage[parfill]{parskip} % Activate to begin paragraphs with an empty line rather than an indent
%\usepackage{graphicx}
%\usepackage{amssymb}
%\usepackage{epstopdf}
\usepackage{listings}
\lstset{ %
language= Fortran, % choose the language of the code
basicstyle=\footnotesize, % the size of the fonts that are used for the code
basicstyle=\scriptsize,
numbers=left, % where to put the line-numbers
numberstyle=\footnotesize, % the size of the fonts that are used for the line-numbers
numberstyle=\scriptsize, % the size of the fonts that are used for the line-numbers
stepnumber=2, % the step between two line-numbers. If it's 1 each line will be numbered
numbersep=5pt, % how far the line-numbers are from the code
%backgroundcolor=\color{white}, % choose the background color. You must add \usepackage{color}
%showspaces=false, % show spaces adding particular underscores
%showstringspaces=false, % underline spaces within strings
%showtabs=false, % show tabs within strings adding particular underscores
frame=single, % adds a frame around the code
tabsize=2, % sets default tabsize to 2 spaces
captionpos=b, % sets the caption-position to bottom
breaklines=true, % sets automatic line breaking
breakatwhitespace=false, % sets if automatic breaks should only happen at whitespace
title=\lstname, % show the filename of files included with \lstinputlisting; also try caption instead of title
escapeinside={\%*}{*)} % if you want to add a comment within your code
%morekeywords={*,...} % if you want to add more keywords to the set
}
%\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}
\title{Brief Article}
\author{The Author}
%\date{} % Activate to display a given date or no date
\begin{document}
\maketitle
%\section{}
%\subsection{}
\lstinputlisting[language=Fortran]{pGrand_hsnj.f}
\lstinputlisting[language=Fortran]{pHydroTort_FT_F.f90}
\end{document}
Thursday, March 11, 2010
How to add a new rpm using repoman
I needed to install pdftk rpm in my RHEL 5 host using repoman. Here is one that I figured out.
1. Download a necessary rpm from any source.
2. Copy the rpm file to a sub-directory under /deport/. In my case, it is
/depot/contrib/rhel/5/x86_64/
3. Type and enter:
repoman -r "Repo for rhel-5-x86_64" -u
1. Download a necessary rpm from any source.
2. Copy the rpm file to a sub-directory under /deport/. In my case, it is
/depot/contrib/rhel/5/x86_64/
3. Type and enter:
ngedit
and follow instruction.
To manually update repository, type/enter:
repoman -r "Repo for rhel-5-x86_64" -u
Of course, contents in " " is specified for a given repository name. Option "-u" indicates update.
4. Select "next" in most sequential cases in repoman. Click the name of rpm that you want to install. And, finally enjoy using it.
4. Select "next" in most sequential cases in repoman. Click the name of rpm that you want to install. And, finally enjoy using it.
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