Databases
StackOverflow2013
Postsdbo
POUsing Protovis with Dynamically Loaded Data via JQuery
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUsing Protovis with Dynamically Loaded Data via JQuery
    primarykey
    data
    text
    <p>I am dynamically loading some social network data into a web page that I want to visualise using protovis.(Actually, the data is loaded in in a two pass process - first a list of user names is grabbed from Twitter, then a list of social connections is grabbed from the Google Social API.) The protovis code seems to run inside an event loop, which means the data loading code needs to be outside this loop.</p> <p>How do I load the data into the page and parse it, before "switching on" the protovis event loop? At the moment, I think there's a race condition whereby protovis tries to visualise network data that hasn't been loaded and parsed yet?</p> <pre><code>&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt; &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="../protovis-3.2/protovis-r3.2.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; //getNet is where we get a list of Twitter usernames function getNet(){ url="http://search.twitter.com/search.json?q=jisc11&amp;callback=?" $.getJSON(url,function(json){ users=[] uniqusers={} for (var u in json['results']) { uniqusers[json['results'][u]['from_user']]=1 } for (var uu in uniqusers) users.push(uu) getConnections(users) }) } //getConnections is where we find the connections between the users identified by the list of Twitter usernames function getConnections(users){ //Google social API limits lookup to 50 URLs; need to page this... if (users.length&gt;50) users=users.slice(0,49) str='' for (var uic=0; uic&lt;users.length; uic++) str+='http://twitter.com/'+users[uic]+',' url='http://socialgraph.apis.google.com/lookup?q='+str+'&amp;edo=1&amp;callback=?'; $.getJSON(url,function(json){ graph={} graph['nodes']=[] userLoc={} for (var uic=0; uic&lt;users.length; uic++){ graph['nodes'].push({nodeName:users[uic]}) userLoc[users[uic]]=uic } graph['links']=[] for (u in json['nodes']) { name=u.replace('http://twitter.com/','') for (var i in json['nodes'][u]['nodes_referenced']){ si=i.replace('http://twitter.com/','') if ( si in userLoc ){ if (json['nodes'][u]['nodes_referenced'][i]['types'][0]=='contact') graph['links'].push({source:userLoc[name], target:userLoc[si]}) } } } followers={} followers={nodes:graph['nodes'],links:graph['links']} }); } $(document).ready(function() { users=['psychemedia','mweller','mhawksey','garethm','gconole','ambrouk'] //getConnections(users) getNet() }) &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="center"&gt;&lt;div id="fig"&gt; &lt;script type="text/javascript+protovis"&gt; // This code is taken directly from the protovis example var w = document.body.clientWidth, h = document.body.clientHeight, colors = pv.Colors.category19(); var vis = new pv.Panel() .width(w) .height(h) .fillStyle("white") .event("mousedown", pv.Behavior.pan()) .event("mousewheel", pv.Behavior.zoom()); var force = vis.add(pv.Layout.Force) .nodes(followers.nodes) .links(followers.links); force.link.add(pv.Line); force.node.add(pv.Dot) .size(function(d) (d.linkDegree + 4) * Math.pow(this.scale, -1.5)) .fillStyle(function(d) d.fix ? "brown" : colors(d.group)) .strokeStyle(function() this.fillStyle().darker()) .lineWidth(1) .title(function(d) d.nodeName) .event("mousedown", pv.Behavior.drag()) .event("drag", force) //comment out the next line to remove labels //.anchor("center").add(pv.Label).textAlign("center").text(function(n) n.nodeName) vis.render(); &lt;/script&gt; &lt;/div&gt;&lt;/div&gt; &lt;/body&gt;&lt;/html&gt; </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USpsychemedia
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUsing Protovis with Dynamically Loaded Data via JQuery
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POUsing Protovis with Dynamically Loaded Data via JQuery
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POUsing Protovis with Dynamically Loaded Data via JQuery
      1. This table or related slice is empty.
      1. VTUpMod
    1. COdoes my updated answer solve your problem now?
      singulars
      1. POUsing Protovis with Dynamically Loaded Data via JQuery
      1. USJames Crook
    2. COI've blogged a demo using James Crook's solution w/ JQuery making queries to Twitter and Google Social APIs, then graphing the result: blog.ouseful.info/2011/04/12/using-protovis-to-visualise-connections-between-people-tweeting-a-particular-term/
      singulars
      1. POUsing Protovis with Dynamically Loaded Data via JQuery
      1. USpsychemedia
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload