question about the input

[kouroshparsa]

This is a great project.
Can you please explain what the input is?

var heatmap = [
    ['january',0,1,1368001],

It seems that it is MONTH, DAY, DAY, POWER.
but heatmap is supposed to have 3 dimensions so why there are 4?
thanks

[pollen8]

the first entry is the id - you use this to to assign track data to the given layout

so say your layout has data :

[{
   id: 'january'
...
}]

if you added a track its data would look like

[{
        block_id: 'january',
        ....
 }]

this allows cicrosjs to position the track relative to its related layout entry

[nicgirault]

Thanks @pollen8 for the answer. Is it clear enough @kouroshparsa? Is there a part of the documentation that is not clear enough?