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POSVG to PNG Server side - using node.js
 

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    <p>I'm trying to follow this tutorial on converting a d3.js SVG Vis to a PNG server-side (using Node.js) <a href="http://eng.wealthfront.com/2011/12/converting-dynamic-svg-to-png-with.html" rel="noreferrer">http://eng.wealthfront.com/2011/12/converting-dynamic-svg-to-png-with.html</a></p> <p><strong>Link to full code:</strong> <a href="https://gist.github.com/1509145" rel="noreferrer">https://gist.github.com/1509145</a></p> <p>However, I keep getting this <strong>error</strong> whenever I attempt to make a request to load my page </p> <pre><code> /Users/me/Node/node_modules/jsdom/lib/jsdom.js:171 features = JSON.parse(JSON.stringify(window.document.implementation._fea ^ TypeError: Cannot read property 'implementation' of undefined at exports.env.exports.jsdom.env.processHTML (/Users/dereklo/Node/node_modules/jsdom/lib/jsdom.js:171:59) at Object.exports.env.exports.jsdom.env (/Users/dereklo/Node/node_modules/jsdom/lib/jsdom.js:262:5) at Server.&lt;anonymous&gt; (/Users/dereklo/Node/Pie/pie_serv.js:26:9) at Server.EventEmitter.emit (events.js:91:17) at HTTPParser.parser.onIncoming (http.js:1785:12) at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:111:23) at Socket.socket.ondata (http. </code></pre> <p>Does anybody know why this might be? I've installed the jsdom module fine, so I don't really know what's causing these issues...thanks in advance.</p> <p><strong>EDIT</strong></p> <p>This is the code I'm using to implement the node.js server. My latest issue is below this source...</p> <pre><code>var http = require('http'), url = require('url'), jsdom = require('jsdom'), child_proc = require('child_process'), w = 400, h = 400, __dirname = "Users/dereklo/Node/pie/" scripts = ["/Users/dereklo/Node/pie/d3.min.js", "/Users/dereklo/Node/pie/d3.layout.min.js", "/Users/dereklo/Node/pie/pie.js"], //scripts = ["./d3.v2.js", // "./d3.layout.min.js", // "./pie.js"] htmlStub = '&lt;!DOCTYPE html&gt;&lt;div id="pie" style="width:'+w+'px;height:'+h+'px;"&gt;&lt;/div&gt;'; http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'image/png'}); var convert = child_proc.spawn("convert", ["svg:", "png:-"]), values = (url.parse(req.url, true).query['values'] || ".5,.5") .split(",") .map(function(v){return parseFloat(v)}); convert.stdout.on('data', function (data) { res.write(data); }); convert.on('exit', function(code) { res.end(); }); jsdom.env({features:{QuerySelector:true}, html:htmlStub, scripts:scripts, done:function(errors, window) { var svgsrc = window.insertPie("#pie", w, h, values).innerHTML; console.log("svgsrc",svgsrc); //jsdom's domToHTML will lowercase element names svgsrc = svgsrc.replace(/radialgradient/g,'radialGradient'); convert.stdin.write(svgsrc); convert.stdin.end(); }}); }).listen(8888, "127.0.0.1"); console.log('Pie SVG server running at http://127.0.0.1:8888/'); console.log('ex. http://127.0.0.1:8888/?values=.4,.3,.2,.1'); </code></pre> <p><strong>Latest Issue</strong></p> <pre><code> events.js:66 throw arguments[1]; // Unhandled 'error' event ^ Error: This socket is closed. at Socket._write (net.js:519:19) at Socket.write (net.js:511:15) at http.createServer.jsdom.env.done (/Users/dereklo/Node/Pie/pie_serv.js:38:19) at exports.env.exports.jsdom.env.scriptComplete (/Users/dereklo/Node/node_modules/jsdom/lib/jsdom.js:199:39) </code></pre>
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    1. COMaybe you could show us some code? :-)
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    2. COI've literally copy and pasted the tutorial code....
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    3. CO@FlorianMargaine I added a link to the tutorial's gist. Care to take a crack at this Florian?
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