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js9analysis.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge;chrome=1" >
<link type="image/x-icon" rel="shortcut icon" href="./favicon.ico">
<link type="text/css" rel="stylesheet" href="js9support.css">
<link type="text/css" rel="stylesheet" href="js9.css">
<script type="text/javascript" src="js9support.min.js"></script>
<script type="text/javascript" src="js9.min.js"></script>
<script type="text/javascript" src="js9plugins.js"></script>
<style type="text/css">
#myAnalysisDiv {
background: #E9E9E9;
border-width: 0px;
width: 440px;
padding: 10px;
overflow: auto;
}
#myAnalysisResults {
height: 440px;
}
#myButtonsDiv {
background: lightgrey;
border-width: 0px;
padding-left: 10px;
padding-right: 10px;
overflow: auto;
width: 440px;
}
.myButton {
font: normal 12px Arial;
}
#myHistPlotForm {
margin-left: 0px;
border-width: 0px;
width: 600px;
}
</style>
<title>JS9 analysis</title>
</head>
<body onload="initMyAnalysis()">
<script type="text/javascript">
// add event handlers to the analysis buttons to execute the specified task
// note that jQuery is available automatically
function initMyAnalysis(){
$("#counts").on("click", function(evt){
runMyAnalysis("counts");
});
$("#radialprofile").on("click", function(evt){
runMyAnalysis("radialprofile");
});
$("#energyplot").on("click", function(evt){
runMyAnalysis("energyplot");
});
$("#histplot").on("click", function(evt){
$("#myHistParams").toggle();
});
}
// run ananlysis on current image, defining a function to display results
function runMyAnalysis(aname){
JS9.RunAnalysis(aname, null, displayMyAnalysis);
}
// display function passed to JS9.RunAnalysis and JS9.SubmitAnalysis
// when the analysis task is complete, this callback displays results
function displayMyAnalysis(stdout, stderr, errcode, a){
var rdiv = $("#myAnalysisResults")[0];
if( !rdiv ){
alert("the analysis results area is missing on this web page");
}
else if( stderr ){
alert(stderr);
} else {
switch(a.rtype){
case "text":
// text can just get shoved into the div
rdiv.innerHTML = "<pre>" + stdout + "<\/pre>";
break;
case "plot":
// plot can make use of the already-loaded flot routines
// ( and JS9.plotOpts is defined in js9-version.js)
try{
// retrieve plot object (should contain a data object)
pobj = JSON.parse(stdout);
if( pobj && pobj.data ){
// erase explanatory text
rdiv.innerHTML = "";
// plot the data
$.plot(rdiv, [pobj], JS9.plotOpts);
} else {
alert("no analysis data returned");
}
}
catch(e){ alert("can't plot data: "+e+" "+stdout)};
break;
}
}
}
</script>
<center><font size="+1">
<b>JS9 Demo: two ways of doing remote (server-based) data analysis</b>
</font></center>
<table cellspacing="20">
<tr valign="top">
<td>
PNG files (converted from FITS):
<ul>
<li> <a href='javascript:JS9.Load("png/casa.png");'>CAS-A (Chandra)</a>
<li> <a href='javascript:JS9.Load("png/snr.png", {colormap:"heat"});'>CTB 109 (Einstein)</a>
<li> <a href='javascript:JS9.Load("png/m13.png", {scale:"linear", colormap:"sls"});'>m13 (via SkyView)</a>
<li> <a href='javascript:JS9.Load("png/i1000.png", {scale:"linear", colormap:"grey"});'>i1000 (v=x*1000+y)</a>
</ul>
</td>
<td>
FITS images and binary tables:
<ul>
<li> <a href='javascript:JS9.Load("fits/3c58.fits");'>3c58 (Chandra)</a>
<li> <a href='javascript:JS9.Load("fits/3c273.fits");'>3c273 (Chandra)</a>
<li> <a href='javascript:JS9.Load("fits/ngkper.fits");'>gkper (Chandra)</a>
<li> <a href='javascript:JS9.Load("fits/ngc1316.fits", {scale:"linear"});'>ngc1316 (AIPS)</a>
</ul>
</td>
</tr>
<tr valign="top">
<td>
<div class="JS9Menubar"></div>
<div class="JS9"></div>
</td>
<td>
<div id="myButtonsDiv">
<div id="myButtonsBox">
<button id="energyplot" class="myButton">EnergySpectrum</button>
<button id="counts" class="myButton">Counts</button>
<button id="radialprofile" class="myButton">RadialProfile</button>
<button id="histplot" class="myButton">HistogramPlot</button>
</div>
</div>
<div id="myHistParams" style="display:none">
<form id="myHistPlotForm" name="myHistPlotForm" class="js9AnalysisForm" action="">
<div class="linegroup">
<span class="column_A">
<b>Enter column name</b>
</span>
<span class="column_B">
<input type="text" class="text_B" id="column" name="column" value="pi">
</span>
<span class="column_C">
<font size="-1">(column must be in file)</font>
</span>
</div>
<div class="linegroup">
<span class="column_A">
<b>Enter [min:max:]bins</b>
</span>
<span class="column_B">
<input type="text" class="text_B" id="bins" name="bins" value="0">
</span>
<span class="column_C">
<font size="-1">(0 => default # of bins)</font>
</span>
</div>
<div class="linegroup">
<span class="column_A">
Bin width instead of # of bins?
</span>
<span class="column_B">
<input type="checkbox" id="bwidth" name="bwidth" value="true">
</span>
<span class="column_C">
</span>
</div>
<div class="linegroup">
<span class="column_A">
Normalize by bin size?
</span>
<span class="column_B">
<input type="checkbox" id="norm" name="norm" value="true">
</span>
<span class="column_C">
</span>
</div>
<input id="run" name="run" type="button" class="button" value="Run" onclick="return JS9.SubmitAnalysis(this, 'histplot', displayMyAnalysis);">
</form>
</div>
<div id="myAnalysisDiv">
<div id="myAnalysisResults">
JS9 can perform remote data analysis in two ways:
<ul>
<li> The JS9 Analysis menu will run remote analysis tasks and
display results in light-weight windows. This option is
self-contained and does not require any additional Web
programming or HTML display elements.
<li> The Web page author can create a user interface to execute
remote analysis on the current image and display the
returned results. In this case, the author sets up
buttons, forms, etc., and supplies JavaScript code to
display results in the page.
</ul>
The buttons located above, along with this 'results' window, illustrate
option #2: a Web interface to JS9 data analysis. See the page source for
implementation details.
<p>
JS9 also support local (browser-based) analysis using plugins. See the
plugins and imexam demos below.
</div>
</div>
</td>
</tr>
</table>
<p>
JS9 Demos:
<ul>
<li><a href='js9basics.html'>JS9 Demo: the basics</a>
<li><a href='js9bespoke.html'>JS9 Demo: web page control of JS9</a>
<li><a href='js9sizes.html'>JS9 Demo: setting the size of the JS9 display</a>
<li><a href='js9plugins.html'>JS9 Demo: adding plugins to JS9</a>
<li><a href='js9imexam.html'>JS9 Demo: the imexam plugin for JS9</a>
<li><a href='js9blend.html'>JS9 Demo: image blending</a>
<li><a href='js9cat.html'>JS9 Demo: overlaying catalogs</a>
<li><a href='js9panzoom.html'>JS9 Demo: pan and zoom</a>
<li><a href='js9rgb.html'>JS9 Demo: RGB composite images</a>
<li><a href='js9multi.html'>JS9 Demo: independent instances of JS9</a>
<li><a href='js9analysis.html'>JS9 Demo: remote data analysis</a>
<li><a href='js9onchange.html'>JS9 Demo: running tasks when a region changes</a>
<li><a href='js9create.html'>JS9 Demo: creating a JS9 instance dynamically</a>
<li><a href='js9preload.html'>JS9 Demo: preloading images into JS9</a>
<li><a href='js9bitpix.html'>JS9 Demo: displaying different FITS datatypes</a>
<li><a href='js9pngvsfits.html'>JS9 Demo: PNG representation files vs FITS files</a>
</ul>
</body>
</html>