I need to build a step chart using jQPlot. My X-Axis is Date/Time and my Y-Axis is a number.
Doing this prototype everything runs fine:
Use CategoryAxisRenderer, it will solve your problem and then you dont have to supply min and max.
You can keep on adding as much data you want it will always plot it correctly.
Jsfiddle link
var line1 = [['2014-01-15 15:10:01', 21],
['2014-01-15 15:10:12', 21],
['2014-01-15 15:10:12', 22],
['2014-01-15 15:10:14', 22],
['2014-01-15 15:10:14', 21],
['2014-01-15 15:10:17', 21],
['2014-01-15 15:10:17', 22],
['2014-01-15 15:10:23', 22],
['2014-01-15 15:10:23', 18],
['2014-01-15 15:10:28', 18],
['2014-01-15 15:10:28', 21]];
var plot1 = $.jqplot('chart1', [line1], {
title: 'Default Date Axis',
axes: { xaxis: { renderer: $.jqplot.CategoryAxisRenderer } },
series: [{ lineWidth: 1, markerOptions: { style: 'square' } }]
});