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Is it possible to create d3 nodes with multiple edge ports?

I'd like to achieve something similar to this diagram using d3:
https://gojs.net/latest/samples/records.html
I was trying to look it up on the web but I hardly found any resources to get started with.
I'm quite new to d3 so I don't know how to approach this task, any help or guidance would be appreciated!

This is another one of those questions where people need to implement a sophisticated diagram visualization and they think just because D3 is a lot about visualization, it will be a good fit.
IMHO it is not.
D3 could be a part of the solution, but it certainly cannot be the solution alone: It's almost like asking whether JavaScript can be used to create this kind of diagram. Of course it can! D3 is just a very thin (but very useful) layer on top of the DOM+JavaScript, that can help you with crunching numbers, work with colors, coordinate systems, create DOM elements, and simplifies working with the DOM. Think of it as jquery for DOM and data plus a lot of very nice demos. But the value very often is in the demos, rather than in D3 itself: You need to implement a lot of things to get from a simple mapping from data to dom elements to a sophisticated diagram visualization like the one you are referring to.
If you don't want to implement and maintain most of the low-level diagram logic yourself, you should rather be looking at a diagramming solution, rather than a tool that will help you create SVG elements elegantly with less code.
Look at this question to see a list of graph and diagram visualization software. Agreed, D3 is also on this list (for the same reason you are asking this question), but there are also far more capable tools on that list that you should be looking at, my recommendation being either the one that you've found already or preferrably this one if your requirements are more sophisticated.

Javascript Flow Chart or Static Flow Chart?

Let's say that we have the following image:
I'm thinking of drawing this image with all the possible connections and then position some labels on their correspondent arrow... but this may not be the best approach, because the position of each label would be different depending on screen resolution. What do you think about this approach?
My question is: anyone knows any JavaScript library, jQuery plugin capable of drawing something like the image above? I mean, capable of doing multiple connections and that could be implemented with AngularJS ?
Here are some new details:
After I make some tests with JointJS, I think it is what I need, but...
the following link is an example of JointJS with a demo of connections/links between sources and targets that I would have on this project... The thing is: as you can see on this demo has alot of links and it's hard to interpret. Can anyone help me on how to make this look better? There's a better way of representing this? (on this example the link's are static but they would be done on a dynamically way).

You can check out below urls:
JSPlumb provides a means for a developer to visually connect elements on their web page
http://jsplumbtoolkit.com/demo/flowchart/jquery.html
http://jsplumbtoolkit.com/demo/home/jquery.html
Wirekit looks good for creating custom wired flows:
http://neyric.github.com/wireit/
JointJS is a modern HTML 5 JavaScript library for visualization and interaction with diagrams and graphs.
http://www.jointjs.com/

Here is a nice angular library
https://github.com/codecapers/AngularJS-FlowChart
and an example of it in action
https://dl.dropboxusercontent.com/u/16408368/WebUI_FlowChart/index.html

Javascript big-data visualisation

I'm about to develop a UI for medical research application. I need to make a time series line graph. Main issue is the amount of data:
5,000 points per graph, with a few of them displayed simultaneity. I’m expecting 50,000 points processed all together.
The question is what presentation library?
The main features I’m looking for are: Handles huge data sets, Zoom, annotations, live update.
I’m already looking into http://dygraphs.com/ and http://meteorcharts.com/
I wouldn't want any library that renders the data as DOM elements, or that uses SVG (from performance perspective)

Well, I think I'll give everyone my own answer to my question:
Dygraphs (http://dygraphs.com/) seems to be on the spot. The documentation, although a lot of apparent efforts, leaves a lot to be desired. But from performance, features and flexibility, it's the best I've seen. At least for my current project needs.
Way to go, Dygraphs!

Have you checked out D3? I'm using that for a lot of graph visualization. It looks like this example renders to svg.
My stuff renders to a SVG for force graph visualizations too, but it looks like D3 might be able to use either a canvas or SVG, but I'm not positive about what all can be rendered to which. Honestly, I'd give D3 a try even with SVG, it might be fast enough. I remember reading something about someone simulating thousands of particles using D3's force graph visualizations without issues. It's SUPER easy to get your data into the right format for it to use.
Good luck!

I am developing a very similar application.
I am currently using Flot for the chart rendering. It handles annotations and zoom, take a look at their plugin library.
I recommend this downsampling plugin which will speed up graph rendering. Rendering 5000 points on your graph is useless: you have less vertical pixels on your screen than that! so this library will only render those that actually have a visual importance.
This only gives you the graph. You may want some kind of dashboard to present all that... I am currently looking at Grafana, which is used for a totally different purpose but makes awesome dashboards. It may be possible to "rip out" their dashboarding features (it uses Flot as well).
Another option is Hightcharts, but that's not free.

Check raphael js Library
Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web. If you want to create your own specific chart or image crop and rotate widget, for example, you can achieve it simply and easily with this library.

Javascript Library to dynamically create graphs?

Here is my requirement:
I need to create a visualization of links between different representations of a person. The image below I think indicates that fairly clearly.
Additionally, those rectangles would also contain some data about that representation of a person (such as demographics and the place). I also need to be able to handle events when clicking on the boxes or the links between them, as a sort of management tool (so, for example, double clicking a link to delete it, or something along those lines). Just as importantly, since the number of people and links will varies, I need it to be displayed by spacing out the people in a roughly equidistant fashion like the image shows.
What would be a javascript library that could accomplish this? I have done some research and have yet not found something that can cleanly do this but I'm hardly an expert in those libraries.
Here are the ones I've looked at:
Arbor js: Can dynamically create the spacing and links of the graph but I'm responsible for rendering all the visuals and there's really no hooks for things like clicking the links.
jsPlumb: Easily create connections between elements and draws them nicely enough but doesn't seem to address any layout issues. Since I don't know how many people will be on the screen, I have to be able to space them out equidistant and that doesn't seem to be a concern of jsPlumb.
D3.js: This creates a good visualization with the spacing I need but I don't see how I can show the data inside each node or do things like like mouse events on the links or box.
I'm feeling a bit lost so I'm hoping someone could point me to something that could help me or maybe point me to an example from one of these libraries that shows me that what I want is possible.

I ended up using Arbor with Raphael as my rendering library and it's worked out very well.

Take a look at Dracula Graph Library. It's a simple library that seems to do both layout as well as rendering graphs (using Raphael under the hood). It's a bit underdeveloped however.

Sunburst Data Visualization - additional ring

I found this nice framework for data visualization purposes:
http://thejit.org/static/v20/Jit/Examples/Sunburst/example2.html
For my project I need 4 rings. So I tried to figure out how to add two rings to the template JS, which you can find here:
http://thejit.org/static/v20/Jit/Examples/Sunburst/example2.js
It is basically a cascaded structure, but simply adding a level doesn't work out.
Does anyone have a clue on how I could add two levels?
In case you have another framework which works a like or similar, I would appreciate your feedback.
Cheers, D

I'm a big fan of the Protovis library, and it easily supports N-level sunbursts: http://mbostock.github.com/protovis/ex/sunburst.html
d3 is another library by the same developer, and it supports sunbursts as well: http://mbostock.github.com/d3/ex/sunburst.html

I am wondering the same, will try this at home, but
https://github.com/philogb/jit/blob/master/Source/Options/Options.Node.js
changing dim from 3 to 5 might do it ( assuming the center circle is 1 dim ).

All I needed to modify was the data: I added some new children to the children array of a leaf node and it automatically created a third ring.
The one caveat was that the id has to be unique, or only the first instance will be displayed. This may be why your experiments weren't working. It will just skip duplicates without a warning.
See http://philogb.github.io/jit/static/v20/Docs/files/Loader/Loader-js.html for the basic requirements for the JSON format that should be used.