<HTML> <HEAD> <!-- Apple Help needs these meta tags in the default page --> <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> <!-- The HTML page title is displayed in Help Viewer's search results window --> <title>LabAnalyst home page</title> <!-- The plist CFBundleHelpBookName value --> <meta name="AppleTitle" content="LabAnalyst home page"> <script language="JavaScript"> javascript: resizeTo(740, 900) </script> <style> /*---- CROSS BROWSER DROPDOWN MENU ----*/ ul#nav {margin: 6 0 0 10px;} ul.drop a { display:block; color: #000080; font-family: Arial; font-size: 14px; text-decoration: none;} ul.drop, ul.drop li, ul.drop ul { list-style: none; margin: 0; padding: 0; border: 1px solid #fff; background: #e0e0e0; color: #0000FF;} ul.drop { position: relative; z-index: 597; float: left; } ul.drop li { float: left; line-height: 1.3em; vertical-align: middle; zoom: 1; padding: 2px 15px; } ul.drop li.hover, ul.drop li:hover { position: relative; z-index: 599; cursor: default; background: #20b2aa; } ul.drop ul { visibility: hidden; position: absolute; top: 100%; left: 0; z-index: 598; width: 150px; background: #555; border: 1px solid #fff; } ul.drop ul li { float: none; } ul.drop ul ul { top: -2px; left: 100%; } ul.drop li:hover > ul { visibility: visible } </style> </HEAD> <BODY> <P><IMG SRC="LAXimages/LAXlogo.jpg" ALIGN="Right"></P> <FONT FACE="Lucida Grande"> <FONT COLOR="#0000FF" size = "+2">LabAnalyst </FONT>is a physiology-oriented but general-purpose data management and analysis program.&nbsp; It contains many display, transformation, and manipulation procedures, along with specialized operations for <a href="respirometry.html">respirometry</a>. </P> <B>Features:</b><BR> <UL> <LI>Up to 20 open files, which can contain as many as 40 channels and up to 6 million samples per file (see the <B>'About LabAnalyst& '</B> option in the LabAnalyst menu). &nbsp; &nbsp; <FONT COLOR="#FF0000" ><B>Caution: </B> </font> memory constraints often preclude use of full-sized files (6 million X 40 channels). <LI>Graphics and text output of results.&nbsp; <LI>Data manipulations include integration, differentiation, smoothing, lag correction, spike and reference removal, baselining, gas exchange calculations, and a variety of mathematical transformations and conversions.&nbsp; <LI>Analyses include running averages and pairs differences, descriptive statistics, minimum and maximum averages over selected intervals, simple waveform analysis, FFT, slope vs. time, interchannel regressions, time series, asymptote and polynomial fitting, and time, event, and selective integration. <LI>A variety of general-purpose and specialized calculators.</LI> </UL> <P>Help windows are based on the program's main menus (below); another page has instructions about how to <A HREF="LAstart.html">get started</A> with the program.<BR> </table> <TABLE WIDTH="740" BORDER="0" CELLSPACING="2" CELLPADDING="2"> <ul id="nav" class="drop"> <li><a href="LAfilemenu.html">File</a> <UL> <li><a href="LabAnalystmenu.html">LabAnalyst menu</a></li> </UL> <li><a href="LAeditmenu.html">Edit</a> <UL> <li><a href="respirometry.html">Respirometry</a></li> </UL> <li><a href="analysismenu.html">Analyze </a></li> <li><a href="LAviewmenu.html">View </a></li> <li><a href="LAscriptsmenu.html">Script </a></li> <li><a href="LAwindowmenu.html">Window </a></li> <li><a href="LAspecialmenu.html">Special </a></li> </ul> </ul> </table> <BR> <HR ALIGN=LEFT><FONT SIZE=+1>Numerical resolution, data types, <A HREF="WHfileformat.html">file formats</a></FONT></B></P> <P><B>LabAnalyst </B>stores data in a floating-point format with roughly 8-10-digit precision.&nbsp; The accuracy of most data is considerably less than can be represented in even 6 decimal digits.&nbsp; A 16-bit analog-to-digital converter working optimally can resolve one part in 65,535, for example -- five decimal digits.&nbsp; Most <B>LabAnalyst</B> operations are performed at higher internal precision to maintain accuracy.</P> <P><B>LabAnalyst</B> works transparently with files generated by the <A HREF="http://warthog.ucr.edu/WartHogPage/LHXwebsite/LabHelperHP.html">LabHelper</A> data-acquisition app,&nbsp; and will also load and save <A HREF="http://www.sablesys.com">Sable Systems</A> files. &nbsp; It can read most .csv (text) files, if the data are numeric.</P> <P><HR ALIGN=LEFT><FONT SIZE=+1>Requirements</FONT></B></P> <P><B>LabAnalyst</B> works best with a color screen.&nbsp; Minimum screen resolution is 640 by 480 pixels (as was the case for <I>very</I> old Macs), but the number of channels is limited to 14 unless at least 600 vertical pixels are available.&nbsp; It's <I>much</I> happier with 1024 X 768 resolution or better. &nbsp;<B>LabAnalyst</B> is not a memory hog but each open file needs roughly 1 gb at the maximum file size of 6 million cases X 40 channels.&nbsp; Typical data files are vastly smaller.&nbsp; <P><HR ALIGN=LEFT><FONT SIZE=+1>Background </FONT></B></P> <B>LabAnalyst</B> was written in <A HREF="http://4toc.com/fb/index.htm">FBtoC</A> by <A HREF="http://www.biology.ucr.edu/people/faculty/Chappell.html">Mark Chappell</A> (a.k.a.&nbsp; '<B>Warthog Systems</B>', with apologies to <A HREF = "http://en.wikipedia.org/wiki/Gilbert_Shelton">Gilbert Shelton</a> for being 'inspired' by his Wonder Warthog character) using facilities provided by the University of California, Riverside.&nbsp; No warranty of any kind is offered or implied.&nbsp; <B>LabAnalyst</B> is NOT a commercial product and may not be sold or copied for commercial purposes.&nbsp; If you have questions you may contact me at: <A HREF="mailto:chappell@ucr.edu">chappell@ucr.edu </A></P> <P><TABLE WIDTH="660" BORDER="0" CELLSPACING="2" CELLPADDING="4"> <TR><TD>&nbsp;&nbsp;</TD> <TD> <IMG SRC="LAXimages/easternwhipbird002b.jpg" ALIGN="RIGHT"><P> <BR>For no particular reason, <B>LabAnalyst</B> plays a song at start-up*:&nbsp; the contact call of the <A HREF="http://faculty.ucr.edu/~chappell/INW/birds5/easternwhipbird.shtml">Eastern whipbird </A><I>(Psophodes olivaceus)</I>, a secretive but noisy species that lives in dense undergrowth in the temperate and tropical rainforests of eastern Australia. &nbsp; <P> Also for no particular reason, a number of different logon ('splash-screen') backgrounds are used (details <A HREF="LogonImages.html">here</A>).</A><P> *If it gets annoying, you can turn off the startup sound as an option in the <A HREF="prefsAppearance.html">Preferences menu</A>.</P></FONT> </TABLE> </P> <HR ALIGN=LEFT> <table width = "700" Border = "0"> <tr><td>Other links: <td> <FONT FACE = "Lucida Grande"> <ul id="nav" class="drop"> <li><a href="LAIcons.html">Icons</a></li> <li><a href="LAHalerts.html">Alerts</a></li> <li><a href="LAcredits.html">Credits</a></li> <li><a href="http://warthog.ucr.edu/">Warthog Systems</a></li> <li><a href="mailto:chappell@ucr.edu?subject=Warthog%20LabAnalyst%20question">email</a></li> </ul> </table> </BODY> </HTML>