just another inlet to tributary

_.md

See Previous Inlet [ Gist ]

config.json

{"editor_editor":{"coffee":false,"vim":false,"emacs":false,"width":601,"height":546,"hide":false},"endpoint":"tributary","public":true}

inlet.js

//these are your variables - click and drag to change
var time = 310;
var base = 201969;
var conv = 0.016;
var invite = 7.5;
var cycle = 67;
var k = conv * invite;
var di = 0.15;    

var data = d3.range(0, time);

//we want to map our x values to pixel values
var xscale = d3.scale.linear()
    .domain([d3.min(data), d3.max(data)]) //scale range of chart
    .range([0, 555]); //width of chart

//we want to map our y values to pixel values
var yscale = d3.scale.linear()
    .domain([base,247887]) //scale range of chart
    .range([379, 0]) //height of chart

var line = d3.svg.line()
    .x(function(d) {
      //for each x value we map it to the pixel value
      return xscale(d);
    })
    .y(function(d,i) {
      //this is the math for NEW USERS = base * (k^(t/cycle +1) -1) / (k-1)
      var pow = Math.pow(k, d/cycle + 1);//this returns k to the power of d/cycle +1
      console.log(base * (pow - 1) / (k - 1))
      return yscale(base * (pow - 1) / (k - 1));
    });

var svg = d3.select("svg");

var path = svg.append("path")
  .data([data])
  .attr("d", line) //this calls the line function with this element's data
  .style("fill", "none")
  .style("stroke", "#4B8FB6")
  .style("stroke-width",2)
  .attr("transform", "translate(" + [84, 31] + ")")

inlet.svg

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