created-at-converter v1.0.2
created-at-data-converter
You want to see how your users have grown over time. The best way to represent is like:
You need to convert your user data (that has a created_at field) into:
- regularly spaced time intervals going from the smallest created_at value to the largest created_at value. This will be your x-axis data.
- a cumulative frequency data set that counts how many users were present at a given point in time.
That is what the created-at-data-converter function does!
Installation & use
npm install created-at-converter --save
Import created-at-converter into your javascript file:
var converterFunction = require('created-at-converter')
You can then use the converterFunction:
cumulativeCreatedAtData = converterFunction(data)
Input data format
Input data must be an array of objects. Each object must have a created_at entry e.g.
var data = [
{ "id":1,"name":"Malik","created_at":"2016-06-15 12:17:25" },
{ "id":2,"name":"Aliyah", "created_at":"2016-04-23 16:46:46"},
{ "id":3,"name":"Sarah","created_at":"2016-10-29 13:15:41"}
];
Output data format
After calling the converterFunction like so:
outputData = converterFunction(data)
Your output will look like:
outputData = {
xVals: [ 'Apr 23rd 16', 'Jul 27th 16', 'Oct 29th 16' ],
yVals: [ 0, 2, 2 ]
}
- The xVals are equally spaced time intervals going from the earliest created_at to the biggest created_at.
- The yVals represent how many user accounts had been created at that point in time.
Use with Chart.js
I built this package so I could send the output data straight into chart.js (http://www.chartjs.org/docs/).
Set
data: outputData.yVal,
And
labels: outputData.xVal