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<!--- P ALIGN=CENTER><FONT COLOR="#008000"><FONT FACE="Times New Roman, serif"><FONT SIZE=4 STYLE="font-size: 15pt"><SPAN LANG="en-US">Welcome to RQDA Project!</SPAN></FONT></FONT></FONT></P--->

<h1>What is RQDA and what are its features?</h1>

<P>RDQA is a <A HREF="">R</A> package for Qualitative Data Analysis, a <B>free</B> (free as freedom) qualitative analysis software application (<A HREF="License.html">BSD</A> license). It works  on Windows, Linux/<A HREF="">FreeBSD</A> and (probably) the Mac OSX platforms. RQDA is an easy to use tool to assist in the analysis of textual data. At the moment it only supports plain text formatted data. All the information is stored in a <A HREF="">SQLite</A> database via the R package of <A HREF="">RSQLite</A>. The GUI is based on <A HREF="">RGtk2</A>, via the aid of <A HREF="">gWidgetsRGtk2</A>. It includes a number of standard Computer-Aided Qualitative Data Analysis features. In addition it seamlessly integrates with R, which means that a) statistical analysis on the coding is possible, and b) functions for data manipulation and analysis can be easily extended by writing R functions. To some extent, <B>RQDA and R make an integrated platform for both quantitative and qualitative data analysis.</B>

<p>Through the GUI, RQDA can:
<li>Import documents from plain text or on-the-fly
<li>Import PDF highlights which is useful for content management of literature (reliant on rjpod)
<li>Support non-English documents. Simplified Chinese Character is well-tested under Windows as well as Debian Linux (with locale of zh_CN.UTF-8)
<li>Character-level coding using codes
<li>File Editing after coding
<li>Memos of documents, codes, coding, project, files and more
<li>Retrieval of coding, and easily return to the original file (to ease the problem of segmentation). Conditional retrieval is supported as well.
<li>Single-file (*.rqda) format, which is basically a SQLite database. Data are stored in UTF-8, so it should be portable
<li>Organize codes into code categories, which is key to theory building. I deliberately avoid using tree-like categorization
<li>Organize files into file categories
<li>Search files by keywords with highlighting of the keyword in the open file.
<li>Apply attributes to file, which is useful for content analysis
<li>There is a case category and related attributes of cases, which is a crucial feature in bridging qualitative and quantitative research.
<li>Search information about a selected case on the Internet via a pop-up menu
<li>Temporary delete files and codes
<li>Rename files, codes, code categories, and cases
<li>Write and organize field work journals
<li>And more ...

<p>Through R functions, it can:
<li>Manipulate the temporary deletions (list, undo temporary deletion, or permanently erase them)
<li>Import a batch of files
<li>Calculate the relation between two codings, given the coding indexes
<li>Give a summary of coding and inter-code relationships
<li>Export file/case attributes and show subsets of files/cases only in respective widget through the ShowSubset function
<li>Perform more flexible ways of conditional retrieval
<li>Perform Boolean operations <i>and</i>, <i>or</i>, and <i>not</i> for codings, files or cases coded by codes (since rev 280).

<p>You can use <i>help(package="RQDA")</i> to see more functions of the RQDA package. 


<li><B>Step one</B>, Install GTK+ (because RGtk2 depends on GTK+, you need to install it before install RGtk2). For windows user, <A HREF="">download</A> GTK+ and install it. For Mac OSX users, go to <A HREF="">here</A> to download and install GTK+. For Debian-based Linux users, you may use <i>sudo apt-get install libgtk2.0-dev</i> to install GTK+ developer library. In Fedora use <i>yum install -y gtk2-devel</i> to install. For other Linux users, you may have to manually install GTK+, <A HREF=""> download</A> the source tarball, and follow the <A HREF="">instructions</A> of installation. You can refer to this <A href="">page</A> for installation of RGtk2.

<li><B>Step two</B>, Install R. Go to <A HREF="">CRAN</A>, download R and install it. For Linux and BSD users, you can download binary version of R or the source code. For Windows users, you can download the binary version of R from the <A HREF="">download page</A>. For Mac OSX users, download the binary version of R from the <A HREF="">download page</A>, More instructions about installing R are in the <A HREF="">R Installation and Administration</A> Manual.

<li><B>Step three</B>, Launch R for further installation. It can be launched as a normal application in Windows, or by command <i>R</i> within a shell terminal in Linux and FreeBSD. Then, you can see the prompt &ldquo;&gt;&rdquo;,which indicates that R is ready for further commands.

<li><B>Step four</B>, Install relevant R packages by command: <I>install.packages("RQDA",dependencies=c("Depends",
    "Imports"))</I> . If you want to use the developer version of RQDA, you can use this command after you have installed RQDA by using the command: <I>install.packages("RQDA",repos="", type="source")</I>.

<li><B>Step five</B>, Launch RQDA using command <I>library(RQDA)</I> from within R. Then you can see the RQDA <A HREF="screenshots/Main_Debian_linux.png" target="_blank">GUI</A>.
<p>For Debian Linux users, there is a apt <A HREF=''>repositories</A>, you can follow the guidelines there.
<p>For non-R-users who use Windows, you can download a rar file from <a href="">Baidu Yun Pan</a> or <a href='!/?cid=41c1ee655922d297&sc=documents&uc=1&id=41C1EE655922D297!278'>skydrive</A>, extract it to, say, c:\. Then you can launch the RQDA by double clicking the RQDA.bat file.

<h1>RQDA Documentation</h1>
<li><A HREF="documentation_2.html#manual" target="_blank">User Manual</A>, <A HREF="documentation_2.html#tips" target="_blank">Tips</A>, <A HREF="documentation_2.html#faq" target="_blank">FAQ</A> (version 0.2-1 onwards)
<li><A HREF="documentation.html#manual" target="_blank">User Manual</A>, <A HREF="documentation.html#tips" target="_blank">Tips</A>, <A HREF="documentation.html#faq" target="_blank">FAQ</A> (version 0.2-0 and previous)
<li>Introduction to CAQDA (26 Jan 2010) <A HREF="" target="_blank">(PDF)</A>.
<li>How to import PDF highlights into RQDA<A HREF="manuals/PDFImport1Jan13.pdf">(PDF)</A>
<li>¶¨ÐÔ·ÖÎöÈí¼þRQDA¼òÃ÷ʹÓÃÊÖ²á(<A href="">PDF</A> in Chinese).

<u>User contributed documentation</u>
<li>Video tutorial on youtube in <A HREF=''>French</A> and <A HREF="">English</A>, both of which are kindly provided by Metin Caliskan.
<li>RQDA Skill Building by Lindsey Varner <A HREF="">Link</A>
<li>Qualitative Data Analysis with RQDA by <A HREF="">PSU</A>
<li>"Using RQDAtm and tm to do text-mining", Download the <A HREF="Using_RQDA2tm.pdf" target="_blank">file</A> (PDF) and first <A HREF="RQDA2tm_example.rqda" target="_blank">example</A> and 2nd <A HREF="RQDA2tm_2nd_example.rqda" target="_blank">example</A> project.(July 2010)

<h1>Who uses it</h1>
<A href="publications.html">Publications</A> using and/or citing RQDA package.

<li> Kelle, U. (ed.).1995."Computer-aided qualitative data analysis: theory, methods and practice." Sage Publications.
<li> Lewins, A. & Silver, C.2007. Using Software in Qualitative Research : A Step-by-Step Guide. Sage Publications.

<h1>How to cite the software</h1>
<p>I have put a lot of effort in this project. I appreciate if you can cite this software in your research. You can use <i>citation("RQDA")</i> to get this citation.

<p>HUANG Ronggui (2012). RQDA: R-based Qualitative Data Analysis. R package version 0.2-3.

<h1>What's new?</h1>
<p>RQDA 0.2-5 is released on <a href=>CRAN</a>  (2014-03-26). This update is in compliance with CRAN policies, but has no significant new features. JRE is required to used rjpod enhancement. 
<p>RQDA 0.2-3 is released with several <A href="">new</a> features (2012-12-12).
<p>rmmseg4j 0.1-0 is released to <A HREF="">CRAN</A> (2012-06-18)
<p>RQDA 0.2-2 is now on <A href ="" target="_blank">CRAN</a> (2011-12-27)
<p>Two new packages (rsmartcn, rmmseg4j) have been added, which segment Simplified Chinese into words seperated by space.
<p>RQDA 0.2-1 is now on <A href ="" target="_blank">CRAN</a> (2011-09-10)
<p>RQDA 0.2-0 is now on <A href ="" target="_blank">CRAN</a> (2010-10-20)
<p>RQDAtm 0.1-0 works now. It bridges RQDA and tm (rev 313) (2010-04-26).
<p>RQDA 0.1-9 is now on <A href ="" target="_blank">CRAN</a> (2010-02-28). There is a bug, and the solution is <A HREF=''>here</A>.
<p>RQDA 0.1-8 is now on <A href ="" target="_blank">CRAN</a> (2009-09-20)
<p>RQDA 0.1-7 is now on <A href ="" target="_blank">CRAN</a> (2009-04-28)
<p>RQDA 0.1-6 is now on <A href ="" target="_blank">CRAN</a> (2008-12-30)
<p>RQDA has been actively developed. You can click <A HREF="">here</A> to see the new features. There are few known-bugs, click <A HREF="">KnownBugs</A> for details.

<h1>More Informaiton</h1>

<li>The project summary page you can find <A HREF="">here</A>.

<li>Homepage of <A HREF="">the author</A>.

Main windows under <A HREF="screenshots/Main.png" target="_blank">Vista</A> and under <A HREF="screenshots/Main_Debian_linux.png" target="_blank">Debian Linux</A>
<br><A HREF="screenshots/File.png" target="_blank">Reading File</A>
<br><A HREF="screenshots/FileMemo.png" target="_blank">File Memo</A>
<br>File Categories window under <A HREF="screenshots/FileCategories.png" target="_blank">Vista</A> and <A HREF="screenshots/FileCategories_Debian_Linux.png" target="_blank">Debian Linux</A>
<br>Codes list window under <A HREF="screenshots/Codes.png" target="_blank">Vista</A> and under <A HREF="screenshots/Codes_Debian_Linux.png" target="_blank">Debian Linux</A>
<br>Code Categories window under <A HREF="screenshots/CodeCategories.png" target="_blank">Vista</A> and <A HREF="screenshots/CodeCategories_Debian_Linux.png" target="_blank">Debian Linux</A>
<br><A HREF="screenshots/Coding.png" target="_blank">Coding</A>
<br><A HREF="screenshots/Retrieval.png" target="_blank">Retrieval</A>
<br>Cases window under <A HREF="screenshots/Cases.png" target="_blank">XP</A> and under <A HREF="screenshots/Cases_Debian_Linux.png" target="_blank">Debian Linux</A>
<br>Attributes window under <A HREF="screenshots/Attributes_Debian_Linux.png" target="_blank">Debian Linux</A>
<br>Journals window under <A HREF="screenshots/Journals_Debian_Linux.png" target="_blank">Debian Linux</A>
<br>Settings window under <A HREF="screenshots/Settings.png" target="_blank">XP</A>and under <A HREF="screenshots/Settings_Debian_Linux.png" target="_blank">Debian Linux</A>

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