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add ability to set number of xAxis ticks #21

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add ability to set number of xAxis ticks #21

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22 changes: 22 additions & 0 deletions gantt-chart-d3.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@ d3.gantt = function() {
var width = document.body.clientWidth - margin.right - margin.left-5;

var tickFormat = "%H:%M";
var ticksCount = 10;
var ticksInterval = null;
var ticksIntervalCount = null;

var keyFunction = function(d) {
return d.startDate + d.taskName + d.endDate;
Expand Down Expand Up @@ -64,6 +67,11 @@ d3.gantt = function() {
y = d3.scale.ordinal().domain(taskTypes).rangeRoundBands([ 0, height - margin.top - margin.bottom ], .1);
xAxis = d3.svg.axis().scale(x).orient("bottom").tickFormat(d3.time.format(tickFormat)).tickSubdivide(true)
.tickSize(8).tickPadding(8);
if (ticksInterval !== null && ticksIntervalCount !== null) {
xAxis.ticks(ticksInterval, ticksIntervalCount);
} else {
xAxis.ticks(ticksCount);
}

yAxis = d3.svg.axis().scale(y).orient("left").tickSize(0);
};
Expand Down Expand Up @@ -216,6 +224,20 @@ d3.gantt = function() {
return gantt;
};

gantt.ticks = function(...args) {
if (!arguments.length)
return ticksCount;
if (arguments.length == 1) {
ticksInterval = null;
ticksIntervalCount = null;
ticksCount = arguments[0];
} else {
ticksInterval = arguments[0];
ticksIntervalCount = arguments[1];
}
return gantt;
};

gantt.selector = function(value) {
if (!arguments.length)
return selector;
Expand Down