Y-axis markers are multiples of odd numbers - highcharts

Question

I have a small team of developers working for me to graph some medical data. They have come back with no resolution. Hopefully someone here can help.
When charting a series the y-axis multiples are not the default highchart multiples. For example in highcharts when I plot the below code, the y-axis labels are 0,250,500,750,1000,1250.
However, when I view the graph in my application I get the following: 0,95,190,285,380,475,570,665,760,855,950. See image attached.Odd intervals
The only other information I can provide is that the container size is relative, and when I change the size of the window, the index values change. That would suggest to me that they are not hard-coded to be a fixed multiple.
Highcharts.chart('container', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
pointStart: 2010
}
},
series: [ {
name: 'Other',
data: [0,100,2,4,8,16,32,64,128,256,512,1024]
}]
});

Answer 1

So a solution is below. Basically, it scans the array for a multiple that is greater than the ideal divider count (in this example 10). It then uses that as the desired interval.
function returnInterval(){
var intervalArray =
[.0001,.001,.01,.1,1,2,5,10,20,50,100,250,500,1000,5000,10000]
var min = .0012 //min from series below
var max = .1001 //max from series below
var idealDivider = (max - min)/10 //where 10 is the number of desired markers
for(var i=0; i<intervalArray.length; i++) {
if (intervalArray[i] >= idealDivider) return intervalArray[i];
}
}
Highcharts.chart('container', {
yAxis:{
tickInterval: returnInterval()
},
series: [{
data: [.0012,.0213,.0123,.0532,.042,.009942,.1001]
}]});