Merge branch 'w-green-master'

c3.js

@@ -657,6 +657,9 @@
     c3_chart_internal_fn.isTimeSeries = function () {
         return this.config.axis_x_type === 'timeseries';
     };
+    c3_chart_internal_fn.isYaxisTimeSeries = function () {
+        return this.config.axis_y_type === 'timeseries';
+    };
     c3_chart_internal_fn.isCategorized = function () {
         return this.config.axis_x_type.indexOf('categor') >= 0;
     };
@@ -996,6 +999,7 @@
             axis_x_extent: undefined,
             axis_x_label: {},
             axis_y_show: true,
+            axis_y_type: undefined,
             axis_y_max: undefined,
             axis_y_min: undefined,
             axis_y_center: undefined,
@@ -1004,6 +1008,10 @@
             axis_y_tick_outer: true,
             axis_y_tick_values: null,
             axis_y_tick_count: undefined,
+            axis_y_ticks: {},
+            axis_y_ticks_time: {},
+            axis_y_ticks_time_value: undefined,
+            axis_y_ticks_time_interval: undefined,
             axis_y_padding: {},
             axis_y_default: undefined,
             axis_y2_show: false,
@@ -1156,7 +1164,7 @@
         return scale;
     };
     c3_chart_internal_fn.getY = function (min, max, domain) {
-        var scale = this.getScale(min, max);
+        var scale = this.getScale(min, max, this.isYaxisTimeSeries());
         if (domain) { scale.domain(domain); }
         return scale;
     };
@@ -3982,7 +3990,13 @@
     };
     c3_chart_internal_fn.getYAxis = function (scale, orient, tickFormat, tickValues, withOuterTick) {
         var axisParams = {withOuterTick: withOuterTick};
+        if (this.isYaxisTimeSeries()) {
+            var timeValue = this.config.axis_y_ticks_time_value;
+            var timeInterval = this.config.axis_y_ticks_time_interval;
+            return c3_axis(this.d3, axisParams).scale(scale).orient(orient).tickFormat(tickFormat).ticks(this.d3.time[timeValue], timeInterval);
+        } else {
             return c3_axis(this.d3, axisParams).scale(scale).orient(orient).tickFormat(tickFormat).tickValues(tickValues);
+        }
     };
     c3_chart_internal_fn.getAxisId = function (id) {
         var config = this.config;

spec/axis-spec.js

@@ -86,6 +86,52 @@ describe('c3 chart axis', function () {
 
     });
 
+    describe('axis y timeseries', function () {
+
+        var args = {
+            data: {
+                columns: [
+                    ["times", 60000, 120000, 180000, 240000]
+                ]
+            },
+            axis: {
+                y: {
+                    type : 'timeseries',
+                    tick: {
+                        values: null,
+                        count: undefined,
+                    },
+                    ticks : {
+                        time : {
+                            value : 'seconds',
+                            interval : 30
+                        }
+                    },
+                },
+            }
+        };
+
+        beforeEach(function () {
+            chart = window.c3.generate(args);
+        });
+
+        it('should have 7 ticks on y axis', function () {
+            var ticksSize = d3.select('.c3-axis-y').selectAll('g.tick').size();
+            expect(ticksSize).toBe(7); // the count starts at initial value and increments by the set interval
+        });
+
+        it('should have specified 30 second intervals', function () {
+            var prevValue;
+            d3.select('.c3-axis-y').selectAll('g.tick').each(function (d, i) {
+                if (i !== 0) {
+                    var result = d - prevValue;
+                    expect(result).toEqual(30000); // expressed in milliseconds
+                }
+                prevValue = d;
+            });
+        });
+    });
+
     describe('axis.x.tick.width', function () {
 
         describe('indexed x axis and y/y2 axis', function () {

src/axis.js

@@ -65,7 +65,13 @@ c3_chart_internal_fn.getXAxis = function (scale, orient, tickFormat, tickValues,
 };
 c3_chart_internal_fn.getYAxis = function (scale, orient, tickFormat, tickValues, withOuterTick) {
     var axisParams = {withOuterTick: withOuterTick};
+    if (this.isYaxisTimeSeries()) {
+        var timeValue = this.config.axis_y_ticks_time_value;
+        var timeInterval = this.config.axis_y_ticks_time_interval;
+        return c3_axis(this.d3, axisParams).scale(scale).orient(orient).tickFormat(tickFormat).ticks(this.d3.time[timeValue], timeInterval);
+    } else {
         return c3_axis(this.d3, axisParams).scale(scale).orient(orient).tickFormat(tickFormat).tickValues(tickValues);
+    }
 };
 c3_chart_internal_fn.getAxisId = function (id) {
     var config = this.config;

src/config.js

@@ -101,6 +101,7 @@ c3_chart_internal_fn.getDefaultConfig = function () {
         axis_x_extent: undefined,
         axis_x_label: {},
         axis_y_show: true,
+        axis_y_type: undefined,
         axis_y_max: undefined,
         axis_y_min: undefined,
         axis_y_center: undefined,
@@ -109,6 +110,10 @@ c3_chart_internal_fn.getDefaultConfig = function () {
         axis_y_tick_outer: true,
         axis_y_tick_values: null,
         axis_y_tick_count: undefined,
+        axis_y_ticks: {},
+        axis_y_ticks_time: {},
+        axis_y_ticks_time_value: undefined,
+        axis_y_ticks_time_interval: undefined,
         axis_y_padding: {},
         axis_y_default: undefined,
         axis_y2_show: false,

src/core.js

@@ -652,6 +652,9 @@ c3_chart_internal_fn.updateAndRedraw = function (options) {
 c3_chart_internal_fn.isTimeSeries = function () {
     return this.config.axis_x_type === 'timeseries';
 };
+c3_chart_internal_fn.isYaxisTimeSeries = function () {
+    return this.config.axis_y_type === 'timeseries';
+};
 c3_chart_internal_fn.isCategorized = function () {
     return this.config.axis_x_type.indexOf('categor') >= 0;
 };

src/scale.js

@@ -39,7 +39,7 @@ c3_chart_internal_fn.getX = function (min, max, domain, offset) {
     return scale;
 };
 c3_chart_internal_fn.getY = function (min, max, domain) {
-    var scale = this.getScale(min, max);
+    var scale = this.getScale(min, max, this.isYaxisTimeSeries());
     if (domain) { scale.domain(domain); }
     return scale;
 };