d3.js - how to actualize the graph data? transition? - javascript

I am trying to learn d3.js (with no JavaScript background) so I created a simple scatter plot.
Now, I am looking for how to render that graph with random data, each time the user click on the Next button.
In the link above, there is what I tried so far.
I know it's a very newbie question and there is thousands of example but I am looking for an explained solution (not just code). Thanks
PS: Please change the external ressource to this if the graphs won't show up.

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Again I just want to store the coding that made by output of d3.js pie chart in to database.
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If I understand correctly you don't want a background for the whole chart. In this case you can always use d3's own insert method selection.insert(name, before) (see the documentation at https://github.com/mbostock/d3/wiki/Selections#wiki-insert ) to display an svg object at a certain in front / behind certain elements...(I guess it would be behind all the groups from you animation basically).

Building a graph from ordered pairs

I have some code which generates an array; at each index there is an array with an x and y coordinate. I wanted to plot the points as a graph using d3.js, but am not sure how to go about that.
I have looked at the site and the examples but have found nothing that would help me with this task. This link here is an example of the type of graph I am trying to create, except I want to be able to create multiple graphs on one grid.
I basically need some guidance on how to get started, because I am completely lost. Any help would be appreciated.
This might better be a comment but I don't have comment access. First of all what is the name of the type of graph you link to in your question? It's not your basic pie or bar graph.
If you want multiple sets of data on one graph, what type of graph do you want? I can't visualize what you are trying to do so I don't know how best to help. Here is a good list of tutorials that link out to examples of how to use D3.

Link different charts together using Javascript

I'm searching for a JavaScript library through which i can create charts that link to other charts or embed them. For example, let's say we have a pie chart, if someone clicks on a pie's slice, another different chart appears.
I'm using the Google Charts API and jqPlot at the moment, but so far I haven't found a way to add links or js functions when someone is clicking on a chart's element. Any help for any library will be appreciated.
Thank you.
They all allow event handling
Here is one
http://g.raphaeljs.com/piechart2.html

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