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<html>
   
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <link rel="stylesheet" type="text/css" href="sun-style.css">
      <title>STILTS - Starlink Tables Infrastructure Library Tool Set</title>
   </head>
   
   <body>
      <h1 align="center">STILTS - Starlink Tables Infrastructure Library Tool Set<br>Version 3.1-2-debian
      </h1>
      <div align="center"><img src="ttools2.png" alt="Cover image" align="middle"></div>
      <hr>
      <p><i>Starlink User Note 256<br>Mark Taylor<br>7 November 2017<br></i></p>
      <hr>
      <h2>Contents</h2>
      <ul>
         <li><a href="abstract.html">Abstract</a></li>
         <li><a href="sec1.html">1 Introduction</a></li>
         <ul>
            <li><a href="debian.html">1.1 Debian specific changes</a></li>
         </ul>
         <li><a href="stilts-cmd.html">2 The <code>stilts</code> command</a></li>
         <ul>
            <li><a href="stilts-flags.html">2.1 Stilts flags</a></li>
            <li><a href="task-name.html">2.2 Task Names</a></li>
            <li><a href="task-args.html">2.3 Task Arguments</a></li>
            <li><a href="sec2.4.html">2.4 Getting Help</a></li>
         </ul>
         <li><a href="invoke.html">3 Invocation</a></li>
         <ul>
            <li><a href="jvmClasspath.html">3.1 Class Path</a></li>
            <li><a href="jvmArgs.html">3.2 Java Flags</a></li>
            <li><a href="sysProperties.html">3.3 System Properties</a></li>
            <li><a href="jdbcConfig.html">3.4 JDBC Configuration</a></li>
         </ul>
         <li><a href="jystilts.html">4 JyStilts - STILTS from Python</a></li>
         <ul>
            <li><a href="jyrun.html">4.1 Running JyStilts</a></li>
            <li><a href="sec4.2.html">4.2 Table I/O</a></li>
            <li><a href="jytable.html">4.3 Table objects</a></li>
            <li><a href="jyfilter.html">4.4 Table filter commands (<code>cmd_*</code>)</a></li>
            <li><a href="jymode.html">4.5 Table output modes (<code>mode_*</code>)</a></li>
            <li><a href="jytask.html">4.6 Tasks</a></li>
            <li><a href="jyfuncs.html">4.7 Calculation Functions</a></li>
         </ul>
         <li><a href="io.html">5 Table I/O</a></li>
         <ul>
            <li><a href="location-syntax.html">5.1 Table Locations</a></li>
            <li><a href="sec5.2.html">5.2 Table Formats</a></li>
            <ul>
               <li><a href="inFormats.html">5.2.1 Input Formats</a></li>
               <li><a href="outFormats.html">5.2.2 Output Formats</a></li>
            </ul>
         </ul>
         <li><a href="pipes.html">6 Table Pipelines</a></li>
         <ul>
            <li><a href="filterSteps.html">6.1 Processing Filters</a></li>
            <ul>
               <li><a href="addcol.html">6.1.1 <code>addcol</code></a></li>
               <li><a href="addpixsample.html">6.1.2 <code>addpixsample</code></a></li>
               <li><a href="addresolve.html">6.1.3 <code>addresolve</code></a></li>
               <li><a href="addskycoords.html">6.1.4 <code>addskycoords</code></a></li>
               <li><a href="assert.html">6.1.5 <code>assert</code></a></li>
               <li><a href="badval.html">6.1.6 <code>badval</code></a></li>
               <li><a href="cache.html">6.1.7 <code>cache</code></a></li>
               <li><a href="check.html">6.1.8 <code>check</code></a></li>
               <li><a href="clearparams.html">6.1.9 <code>clearparams</code></a></li>
               <li><a href="colmeta.html">6.1.10 <code>colmeta</code></a></li>
               <li><a href="delcols.html">6.1.11 <code>delcols</code></a></li>
               <li><a href="every.html">6.1.12 <code>every</code></a></li>
               <li><a href="explodeall.html">6.1.13 <code>explodeall</code></a></li>
               <li><a href="explodecols.html">6.1.14 <code>explodecols</code></a></li>
               <li><a href="fixcolnames.html">6.1.15 <code>fixcolnames</code></a></li>
               <li><a href="head.html">6.1.16 <code>head</code></a></li>
               <li><a href="keepcols.html">6.1.17 <code>keepcols</code></a></li>
               <li><a href="meta.html">6.1.18 <code>meta</code></a></li>
               <li><a href="progress.html">6.1.19 <code>progress</code></a></li>
               <li><a href="random.html">6.1.20 <code>random</code></a></li>
               <li><a href="randomview.html">6.1.21 <code>randomview</code></a></li>
               <li><a href="repeat.html">6.1.22 <code>repeat</code></a></li>
               <li><a href="replacecol.html">6.1.23 <code>replacecol</code></a></li>
               <li><a href="replaceval.html">6.1.24 <code>replaceval</code></a></li>
               <li><a href="rowrange.html">6.1.25 <code>rowrange</code></a></li>
               <li><a href="select.html">6.1.26 <code>select</code></a></li>
               <li><a href="seqview.html">6.1.27 <code>seqview</code></a></li>
               <li><a href="setparam.html">6.1.28 <code>setparam</code></a></li>
               <li><a href="sort.html">6.1.29 <code>sort</code></a></li>
               <li><a href="sorthead.html">6.1.30 <code>sorthead</code></a></li>
               <li><a href="stats.html">6.1.31 <code>stats</code></a></li>
               <li><a href="tablename.html">6.1.32 <code>tablename</code></a></li>
               <li><a href="tail.html">6.1.33 <code>tail</code></a></li>
               <li><a href="transpose.html">6.1.34 <code>transpose</code></a></li>
               <li><a href="uniq.html">6.1.35 <code>uniq</code></a></li>
            </ul>
            <li><a href="col-id.html">6.2 Specifying a Single Column</a></li>
            <li><a href="colid-list.html">6.3 Specifying a List of Columns</a></li>
            <li><a href="outModes.html">6.4 Output Modes</a></li>
            <ul>
               <li><a href="mode-cgi.html">6.4.1 <code>cgi</code></a></li>
               <li><a href="mode-count.html">6.4.2 <code>count</code></a></li>
               <li><a href="mode-discard.html">6.4.3 <code>discard</code></a></li>
               <li><a href="mode-gui.html">6.4.4 <code>gui</code></a></li>
               <li><a href="mode-meta.html">6.4.5 <code>meta</code></a></li>
               <li><a href="mode-out.html">6.4.6 <code>out</code></a></li>
               <li><a href="mode-samp.html">6.4.7 <code>samp</code></a></li>
               <li><a href="mode-stats.html">6.4.8 <code>stats</code></a></li>
               <li><a href="mode-topcat.html">6.4.9 <code>topcat</code></a></li>
               <li><a href="mode-tosql.html">6.4.10 <code>tosql</code></a></li>
            </ul>
         </ul>
         <li><a href="match.html">7 Crossmatching</a></li>
         <ul>
            <li><a href="MatchEngine.html">7.1 Match Criteria</a></li>
            <ul>
               <li><a href="SkyMatchEngine.html">7.1.1 <code>sky</code>: Sky Matching</a></li>
               <li><a href="SkyMatchEngine-err.html">7.1.2 <code>skyerr</code>:
                     Sky Matching with Per-Object Errors</a></li>
               <li><a href="EllipseSkyMatchEngine.html">7.1.3 <code>skyellipse</code>:
                     Sky Matching of Elliptical Regions</a></li>
               <li><a href="SphericalPolarMatchEngine.html">7.1.4 <code>sky3d</code>: Spherical Polar Matching</a></li>
               <li><a href="EqualsMatchEngine.html">7.1.5 <code>exact</code>: Exact Matching</a></li>
               <li><a href="IsotropicCartesianMatchEngine.html">7.1.6 <code>1d</code>, <code>2d</code>, ...:
                     Isotropic Cartesian Matching</a></li>
               <li><a href="AnisotropicCartesianMatchEngine.html">7.1.7 <code>2d_anisotropic</code>, ...:
                     Anisotropic Cartesian Matching</a></li>
               <li><a href="CuboidCartesianMatchEngine.html">7.1.8 <code>2d_cuboid</code>, ...:
                     Cuboid Cartesian Matching</a></li>
               <li><a href="ErrorCartesianMatchEngine.html">7.1.9 <code>1d_err</code>, <code>2d_err</code>, ...:
                     Cartesian Matching with Per-Object Errors</a></li>
               <li><a href="EllipseCartesianMatchEngine.html">7.1.10 <code>2d_ellipse</code>:
                     Cartesian Matching of Elliptical Regions</a></li>
               <li><a href="sec7.1.11.html">7.1.11 Custom Matchers</a></li>
               <li><a href="CombinedMatchEngine.html">7.1.12 Matcher Combinations</a></li>
            </ul>
            <li><a href="matchGroup.html">7.2 Multi-Object Matches</a></li>
         </ul>
         <li><a href="plot2.html">8 Plotting</a></li>
         <ul>
            <li><a href="TypedPlot2Task.html">8.1 Plot Parameters</a></li>
            <ul>
               <li><a href="plot2-global-params.html">8.1.1 Global Parameters</a></li>
               <li><a href="plot2-layer-params.html">8.1.2 Layer Parameters</a></li>
               <li><a href="animate.html">8.1.3 Animation</a></li>
            </ul>
            <li><a href="PlotType.html">8.2 Surface Types</a></li>
            <li><a href="LayerType.html">8.3 Layer Types</a></li>
            <ul>
               <li><a href="layer-mark.html">8.3.1 <code>mark</code></a></li>
               <li><a href="layer-size.html">8.3.2 <code>size</code></a></li>
               <li><a href="layer-sizexy.html">8.3.3 <code>sizexy</code></a></li>
               <li><a href="layer-xyvector.html">8.3.4 <code>xyvector</code></a></li>
               <li><a href="layer-xyerror.html">8.3.5 <code>xyerror</code></a></li>
               <li><a href="layer-xyellipse.html">8.3.6 <code>xyellipse</code></a></li>
               <li><a href="layer-xycorr.html">8.3.7 <code>xycorr</code></a></li>
               <li><a href="layer-link2.html">8.3.8 <code>link2</code></a></li>
               <li><a href="layer-mark2.html">8.3.9 <code>mark2</code></a></li>
               <li><a href="layer-line.html">8.3.10 <code>line</code></a></li>
               <li><a href="layer-linearfit.html">8.3.11 <code>linearfit</code></a></li>
               <li><a href="layer-label.html">8.3.12 <code>label</code></a></li>
               <li><a href="layer-contour.html">8.3.13 <code>contour</code></a></li>
               <li><a href="layer-grid.html">8.3.14 <code>grid</code></a></li>
               <li><a href="layer-fill.html">8.3.15 <code>fill</code></a></li>
               <li><a href="layer-quantile.html">8.3.16 <code>quantile</code></a></li>
               <li><a href="layer-histogram.html">8.3.17 <code>histogram</code></a></li>
               <li><a href="layer-kde.html">8.3.18 <code>kde</code></a></li>
               <li><a href="layer-knn.html">8.3.19 <code>knn</code></a></li>
               <li><a href="layer-densogram.html">8.3.20 <code>densogram</code></a></li>
               <li><a href="layer-gaussian.html">8.3.21 <code>gaussian</code></a></li>
               <li><a href="layer-function.html">8.3.22 <code>function</code></a></li>
               <li><a href="layer-skyvector.html">8.3.23 <code>skyvector</code></a></li>
               <li><a href="layer-skyellipse.html">8.3.24 <code>skyellipse</code></a></li>
               <li><a href="layer-skycorr.html">8.3.25 <code>skycorr</code></a></li>
               <li><a href="layer-skydensity.html">8.3.26 <code>skydensity</code></a></li>
               <li><a href="layer-healpix.html">8.3.27 <code>healpix</code></a></li>
               <li><a href="layer-skygrid.html">8.3.28 <code>skygrid</code></a></li>
               <li><a href="layer-xyzvector.html">8.3.29 <code>xyzvector</code></a></li>
               <li><a href="layer-xyzerror.html">8.3.30 <code>xyzerror</code></a></li>
               <li><a href="layer-yerror.html">8.3.31 <code>yerror</code></a></li>
               <li><a href="layer-spectrogram.html">8.3.32 <code>spectrogram</code></a></li>
            </ul>
            <li><a href="ShapeMode.html">8.4 Shading Modes</a></li>
            <ul>
               <li><a href="shading-auto.html">8.4.1 <code>auto</code></a></li>
               <li><a href="shading-flat.html">8.4.2 <code>flat</code></a></li>
               <li><a href="shading-translucent.html">8.4.3 <code>translucent</code></a></li>
               <li><a href="shading-transparent.html">8.4.4 <code>transparent</code></a></li>
               <li><a href="shading-density.html">8.4.5 <code>density</code></a></li>
               <li><a href="shading-aux.html">8.4.6 <code>aux</code></a></li>
               <li><a href="shading-weighted.html">8.4.7 <code>weighted</code></a></li>
            </ul>
            <li><a href="paintMode.html">8.5 Output Modes</a></li>
            <ul>
               <li><a href="paintmode-swing.html">8.5.1 <code>swing</code></a></li>
               <li><a href="paintmode-out.html">8.5.2 <code>out</code></a></li>
               <li><a href="paintmode-cgi.html">8.5.3 <code>cgi</code></a></li>
               <li><a href="paintmode-discard.html">8.5.4 <code>discard</code></a></li>
               <li><a href="paintmode-auto.html">8.5.5 <code>auto</code></a></li>
            </ul>
            <li><a href="graphicExporter.html">8.6 Export Formats</a></li>
         </ul>
         <li><a href="plot.html">9 Old-Style Plotting</a></li>
         <ul>
            <li><a href="plotSuffixes.html">9.1 Parameter Suffixes</a></li>
         </ul>
         <li><a href="jel.html">10 Algebraic Expression Syntax</a></li>
         <ul>
            <li><a href="jel-colref.html">10.1 Referencing Column Values</a></li>
            <li><a href="jel-paramref.html">10.2 Referencing Parameter Values</a></li>
            <li><a href="sec10.3.html">10.3 Null Values</a></li>
            <li><a href="sec10.4.html">10.4 Operators</a></li>
            <li><a href="staticMethods.html">10.5 Functions</a></li>
            <ul>
               <li><a href="uk.ac.starlink.ttools.func.Strings.html">10.5.1 Strings</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Tilings.html">10.5.2 Tilings</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Fluxes.html">10.5.3 Fluxes</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Distances.html">10.5.4 Distances</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Times.html">10.5.5 Times</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Arrays.html">10.5.6 Arrays</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Arithmetic.html">10.5.7 Arithmetic</a></li>
               <li><a href="uk.ac.starlink.ttools.func.TrigDegrees.html">10.5.8 TrigDegrees</a></li>
               <li><a href="uk.ac.starlink.ttools.func.KCorrections.html">10.5.9 KCorrections</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Lists.html">10.5.10 Lists</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Coverage.html">10.5.11 Coverage</a></li>
               <li><a href="uk.ac.starlink.ttools.func.CoordsRadians.html">10.5.12 CoordsRadians</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Conversions.html">10.5.13 Conversions</a></li>
               <li><a href="uk.ac.starlink.ttools.func.CoordsDegrees.html">10.5.14 CoordsDegrees</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Maths.html">10.5.15 Maths</a></li>
               <li><a href="uk.ac.starlink.ttools.func.Formats.html">10.5.16 Formats</a></li>
            </ul>
            <li><a href="jelExamples.html">10.6 Examples</a></li>
            <li><a href="jelAdvanced.html">10.7 Advanced Topics</a></li>
            <ul>
               <li><a href="sec10.7.1.html">10.7.1 Expression evaluation</a></li>
               <li><a href="instanceMethods.html">10.7.2 Instance Methods</a></li>
               <li><a href="jelExtend.html">10.7.3 Adding User-Defined Functions</a></li>
            </ul>
         </ul>
         <li><a href="taskApi.html">11 Programmatic Invocation</a></li>
         <li><a href="classified.html">A Commands By Category</a></li>
         <li><a href="cmdUsage.html">B Command Reference</a></li>
         <ul>
            <li><a href="calc.html">B.1 <code>calc</code>: Evaluates expressions</a></li>
            <li><a href="cdsskymatch.html">B.2 <code>cdsskymatch</code>:
                  Crossmatches table on sky position against VizieR/SIMBAD table</a></li>
            <li><a href="coneskymatch.html">B.3 <code>coneskymatch</code>:
                  Crossmatches table on sky position against remote cone service</a></li>
            <li><a href="funcs.html">B.4 <code>funcs</code>: Browses functions used by algebraic expression language</a></li>
            <li><a href="pixfoot.html">B.5 <code>pixfoot</code>: Generates Multi-Order Coverage maps</a></li>
            <li><a href="pixsample.html">B.6 <code>pixsample</code>: Samples from a HEALPix pixel data file</a></li>
            <li><a href="plot2plane.html">B.7 <code>plot2plane</code>: Draws a plane plot</a></li>
            <li><a href="plot2sky.html">B.8 <code>plot2sky</code>: Draws a sky plot</a></li>
            <li><a href="plot2cube.html">B.9 <code>plot2cube</code>: Draws a cube plot</a></li>
            <li><a href="plot2sphere.html">B.10 <code>plot2sphere</code>:
                  Draws a sphere plot</a></li>
            <li><a href="plot2time.html">B.11 <code>plot2time</code>: Draws a time plot</a></li>
            <li><a href="plot2d.html">B.12 <code>plot2d</code>: Old-style 2D Scatter Plot</a></li>
            <li><a href="plot3d.html">B.13 <code>plot3d</code>: Old-style 3D Scatter Plot</a></li>
            <li><a href="plothist.html">B.14 <code>plothist</code>: Old-style Histogram</a></li>
            <li><a href="regquery.html">B.15 <code>regquery</code>: Queries the VO registry</a></li>
            <li><a href="server.html">B.16 <code>server</code>: </a></li>
            <li><a href="sqlclient.html">B.17 <code>sqlclient</code>:
                  Executes SQL statements</a></li>
            <li><a href="sqlskymatch.html">B.18 <code>sqlskymatch</code>:
                  Crossmatches table on sky position against SQL table</a></li>
            <li><a href="sqlupdate.html">B.19 <code>sqlupdate</code>: Updates values in an SQL table</a></li>
            <li><a href="taplint.html">B.20 <code>taplint</code>: Tests TAP services</a></li>
            <li><a href="tapquery.html">B.21 <code>tapquery</code>: Queries a Table Access Protocol server</a></li>
            <li><a href="tapresume.html">B.22 <code>tapresume</code>: Resumes a previous query to a Table Access Protocol server</a></li>
            <li><a href="tapskymatch.html">B.23 <code>tapskymatch</code>:
                  Crossmatches table on sky position against TAP table</a></li>
            <li><a href="tcat.html">B.24 <code>tcat</code>: Concatenates multiple similar tables</a></li>
            <li><a href="tcatn.html">B.25 <code>tcatn</code>: Concatenates multiple tables</a></li>
            <li><a href="tcopy.html">B.26 <code>tcopy</code>: Converts between table formats</a></li>
            <li><a href="tcube.html">B.27 <code>tcube</code>: Calculates N-dimensional histograms</a></li>
            <li><a href="tloop.html">B.28 <code>tloop</code>: Generates a single-column table from a loop variable</a></li>
            <li><a href="tjoin.html">B.29 <code>tjoin</code>: Joins multiple tables side-to-side</a></li>
            <li><a href="tmatch1.html">B.30 <code>tmatch1</code>: Performs a crossmatch internal to a single table</a></li>
            <li><a href="tmatch2.html">B.31 <code>tmatch2</code>: Crossmatches 2 tables using flexible criteria</a></li>
            <li><a href="tmatchn.html">B.32 <code>tmatchn</code>: Crossmatches multiple tables using flexible criteria</a></li>
            <li><a href="tmulti.html">B.33 <code>tmulti</code>: Writes multiple tables to a single container file</a></li>
            <li><a href="tmultin.html">B.34 <code>tmultin</code>: Writes multiple processed tables to single container file</a></li>
            <li><a href="tpipe.html">B.35 <code>tpipe</code>: Performs pipeline processing on a table</a></li>
            <li><a href="tskymap.html">B.36 <code>tskymap</code>: Calculates sky density maps</a></li>
            <li><a href="tskymatch2.html">B.37 <code>tskymatch2</code>: Crossmatches 2 tables on sky position</a></li>
            <li><a href="votcopy.html">B.38 <code>votcopy</code>: Transforms between VOTable encodings</a></li>
            <li><a href="votlint.html">B.39 <code>votlint</code>: Validates VOTable documents</a></li>
         </ul>
         <li><a href="secC.html">C Release Notes</a></li>
         <ul>
            <li><a href="secC.1.html">C.1 Acknowledgements</a></li>
            <li><a href="versions.html">C.2 Version History</a></li>
         </ul>
      </ul>
      <hr><i>STILTS - Starlink Tables Infrastructure Library Tool Set<br>Starlink User Note256<br>STILTS web page:
         <a href="http://www.starlink.ac.uk/stilts/">http://www.starlink.ac.uk/stilts/</a><br>Author email:
         <a href="mailto:m.b.taylor@bristol.ac.uk">m.b.taylor@bristol.ac.uk</a><br>Mailing list:
         <a href="mailto:topcat-user@jiscmail.ac.uk">topcat-user@jiscmail.ac.uk</a><br></i></body>
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