mattdodge / d3fire Goto Github PK
View Code? Open in Web Editor NEWPower your D3 visualizations with data from Firebase
Power your D3 visualizations with data from Firebase
Do you have any working examples of D3Fire that users can look at to better understand how to implement?
I'm trying to write a collaborative graph editor using D3Fire (a previous version was more or less working with a Django server) . My attempt is here : https://github.com/goulu/firegraph
My problem is I can't figure out how to retrieve the source+target data from the links. Currently I have:
function updateGraph() {
var nodes = svg.selectAll(".node").data();
var links = svg.selectAll(".link").data();
packer
.nodes(nodes)
.links(links)
.on("tick", function(d) {
//...
});
packer.links().forEach(function(d) {
d3.select(d)
.attr("d", path);
});
})
.start();
}
but it crashes in start() because links contains undefined objects.
in your demo, how would you create the links list it it were stored in firebase ?
function layThemOut() {
var nodes = wordCloud.selectAll('g')[0], links = [];
BTW why do you use a [0] after selectAll for nodes instead of .data() ?
Thanks for any help, and thanks for your piece of code which will be extremely useful to me !
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