I need realtime plotting in javascript, and I came across this:
http://nme.pl/en/2011/01/real-time-graph-using-javascript
This is close to what i want. Now that my javascript understanding is limited, can any guru point me where from this canvas is getting data? Is it taking from any online url? What is that google analytics url about?
The post is old but came up when googling so I thought I'd post some links to more modern solutions.
Rickshaw is getting some good reviews - https://github.com/shutterstock/rickshaw
Smoothie is also getting some good reviews and I've seen it in action - https://github.com/joewalnes/smoothie
HTH
That particular example is getting data from a JavaScript function that generates "random" data. Code is:
// rotating across pseudo-random values array
var Rotator = function() {
var self = this;
self.data = [
16,23,41,38,45,31,29,22,27,22,25,29,32,45,88,30,
26,22,45,23,36,48,99,22,32,26,22,27,5,0,0,3,15
];
self.index = 0;
self.single = function() {
self.index += 1;
if (self.index > self.data.length) {
self.index = 1;
}
return self.data[self.index-1];
};
self.many = function(length) {
var results = [];
for (var i=0;i<length;i++) {
results.push(self.single());
}
return results;
};
};
As mentioned in comments, you can look at Flor or Ext-JS (Sencha).
Rotator