Add (x|y|z)hoverformat to a number of cartesian and gl3d traces

src/components/fx/hover.js

@@ -1608,11 +1608,11 @@ function cleanPoint(d, hovermode) {
 
     // and convert the x and y label values into formatted text
     if(d.xLabelVal !== undefined) {
-        d.xLabel = ('xLabel' in d) ? d.xLabel : Axes.hoverLabelText(d.xa, d.xLabelVal);
+        d.xLabel = ('xLabel' in d) ? d.xLabel : Axes.hoverLabelText(d.xa, d.xLabelVal, trace.xhoverformat);
         d.xVal = d.xa.c2d(d.xLabelVal);
     }
     if(d.yLabelVal !== undefined) {
-        d.yLabel = ('yLabel' in d) ? d.yLabel : Axes.hoverLabelText(d.ya, d.yLabelVal);
+        d.yLabel = ('yLabel' in d) ? d.yLabel : Axes.hoverLabelText(d.ya, d.yLabelVal, trace.yhoverformat);
         d.yVal = d.ya.c2d(d.yLabelVal);
     }
 

src/plots/cartesian/axes.js

@@ -1356,16 +1356,23 @@ axes.tickText = function(ax, x, hover, noSuffixPrefix) {
  * log axes (where negative values can't be displayed but can appear in hover text)
  *
  * @param {object} ax: the axis to format text for
- * @param {number} val: calcdata value to format
- * @param {Optional(number)} val2: a second value to display
+ * @param {number or array of numbers} values: calcdata value(s) to format
+ * @param {Optional(string)} hoverformat: trace (x|y)hoverformat to override axis.hoverformat
  *
  * @returns {string} `val` formatted as a string appropriate to this axis, or
- *     `val` and `val2` as a range (ie '<val> - <val2>') if `val2` is provided and
- *     it's different from `val`.
+ *     first value and second value as a range (ie '<val1> - <val2>') if the second value is provided and
+ *     it's different from the first value.
  */
-axes.hoverLabelText = function(ax, val, val2) {
-    if(val2 !== BADNUM && val2 !== val) {
-        return axes.hoverLabelText(ax, val) + ' - ' + axes.hoverLabelText(ax, val2);
+axes.hoverLabelText = function(ax, values, hoverformat) {
+    if(hoverformat) ax = Lib.extendFlat({}, ax, {hoverformat: hoverformat});
+
+    var val = Array.isArray(values) ? values[0] : values;
+    var val2 = Array.isArray(values) ? values[1] : undefined;
+    if(val2 !== undefined && val2 !== val) {
+        return (
+            axes.hoverLabelText(ax, val, hoverformat) + ' - ' +
+            axes.hoverLabelText(ax, val2, hoverformat)
+        );
     }
 
     var logOffScale = (ax.type === 'log' && val <= 0);

src/plots/gl3d/scene.js

@@ -322,10 +322,14 @@ proto.render = function() {
         if(trace.setContourLevels) trace.setContourLevels();
     }
 
-    function formatter(axisName, val) {
-        var axis = scene.fullSceneLayout[axisName];
+    function formatter(axLetter, val, hoverformat) {
+        var ax = scene.fullSceneLayout[axLetter + 'axis'];
 
-        return Axes.tickText(axis, axis.d2l(val), 'hover').text;
+        if(ax.type !== 'log') {
+            val = ax.d2l(val);
+        }
+
+        return Axes.hoverLabelText(ax, val, hoverformat);
     }
 
     var oldEventData;
@@ -337,9 +341,9 @@ proto.render = function() {
         var ptNumber = selection.index;
 
         var labels = {
-            xLabel: formatter('xaxis', selection.traceCoordinate[0]),
-            yLabel: formatter('yaxis', selection.traceCoordinate[1]),
-            zLabel: formatter('zaxis', selection.traceCoordinate[2])
+            xLabel: formatter('x', selection.traceCoordinate[0], trace.xhoverformat),
+            yLabel: formatter('y', selection.traceCoordinate[1], trace.yhoverformat),
+            zLabel: formatter('z', selection.traceCoordinate[2], trace.zhoverformat)
         };
 
         var hoverinfo = Fx.castHoverinfo(traceNow, scene.fullLayout, ptNumber);
@@ -358,17 +362,17 @@ proto.render = function() {
         var vectorTx = [];
 
         if(trace.type === 'cone' || trace.type === 'streamtube') {
-            labels.uLabel = formatter('xaxis', selection.traceCoordinate[3]);
+            labels.uLabel = formatter('x', selection.traceCoordinate[3], trace.uhoverformat);
             if(isHoverinfoAll || hoverinfoParts.indexOf('u') !== -1) {
                 vectorTx.push('u: ' + labels.uLabel);
             }
 
-            labels.vLabel = formatter('yaxis', selection.traceCoordinate[4]);
+            labels.vLabel = formatter('y', selection.traceCoordinate[4], trace.vhoverformat);
             if(isHoverinfoAll || hoverinfoParts.indexOf('v') !== -1) {
                 vectorTx.push('v: ' + labels.vLabel);
             }
 
-            labels.wLabel = formatter('zaxis', selection.traceCoordinate[5]);
+            labels.wLabel = formatter('z', selection.traceCoordinate[5], trace.whoverformat);
             if(isHoverinfoAll || hoverinfoParts.indexOf('w') !== -1) {
                 vectorTx.push('w: ' + labels.wLabel);
             }
@@ -388,7 +392,7 @@ proto.render = function() {
             }
             tx = vectorTx.join('<br>');
         } else if(trace.type === 'isosurface' || trace.type === 'volume') {
-            labels.valueLabel = Axes.tickText(scene._mockAxis, scene._mockAxis.d2l(selection.traceCoordinate[3]), 'hover').text;
+            labels.valueLabel = Axes.hoverLabelText(scene._mockAxis, scene._mockAxis.d2l(selection.traceCoordinate[3]), trace.valuehoverformat);
             vectorTx.push('value: ' + labels.valueLabel);
             if(selection.textLabel) {
                 vectorTx.push(selection.textLabel);

src/plots/hoverformat_attributes.js

@@ -0,0 +1,21 @@
+'use strict';
+
+var FORMAT_LINK = require('../constants/docs').FORMAT_LINK;
+
+module.exports = function axisHoverFormat(x, mockedAxis) {
+    return {
+        valType: 'string',
+        dflt: '',
+        editType: 'none',
+        description: [
+            'Sets the hover text formatting rule for `' + x + '`',
+            ' using d3 formatting mini-languages which are very similar to those in Python.',
+            'See: ' + FORMAT_LINK,
+            'By default the values are formatted using ' + (
+                mockedAxis ?
+                    'generic number format' :
+                    ('`' + x + 'axis.hoverformat`')
+            ) + '.',
+        ].join(' ')
+    };
+};

src/traces/bar/attributes.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var scatterAttrs = require('../scatter/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var texttemplateAttrs = require('../../plots/template_attributes').texttemplateAttrs;
 var colorScaleAttrs = require('../../components/colorscale/attributes');
@@ -104,6 +105,8 @@ module.exports = {
     yperiod0: scatterAttrs.yperiod0,
     xperiodalignment: scatterAttrs.xperiodalignment,
     yperiodalignment: scatterAttrs.yperiodalignment,
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
 
     text: scatterAttrs.text,
     texttemplate: texttemplateAttrs({editType: 'plot'}, {

src/traces/bar/defaults.js

@@ -24,6 +24,8 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
     }
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce);
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     coerce('orientation', (traceOut.x && !traceOut.y) ? 'h' : 'v');
     coerce('base');

src/traces/bar/hover.js

@@ -170,9 +170,9 @@ function hoverOnBars(pointData, xval, yval, hovermode) {
     var hasPeriod = di.orig_p !== undefined;
     pointData[posLetter + 'LabelVal'] = hasPeriod ? di.orig_p : di.p;
 
-    pointData.labelLabel = hoverLabelText(pa, pointData[posLetter + 'LabelVal']);
-    pointData.valueLabel = hoverLabelText(sa, pointData[sizeLetter + 'LabelVal']);
-    pointData.baseLabel = hoverLabelText(sa, di.b);
+    pointData.labelLabel = hoverLabelText(pa, pointData[posLetter + 'LabelVal'], trace[posLetter + 'hoverformat']);
+    pointData.valueLabel = hoverLabelText(sa, pointData[sizeLetter + 'LabelVal'], trace[sizeLetter + 'hoverformat']);
+    pointData.baseLabel = hoverLabelText(sa, di.b, trace[sizeLetter + 'hoverformat']);
 
     // spikelines always want "closest" distance regardless of hovermode
     pointData.spikeDistance = (thisBarSizeFn(di) + thisBarPositionFn(di)) / 2;

src/traces/box/attributes.js

@@ -3,6 +3,7 @@
 var scatterAttrs = require('../scatter/attributes');
 var barAttrs = require('../bar/attributes');
 var colorAttrs = require('../../components/color/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var extendFlat = require('../../lib/extend').extendFlat;
 
@@ -70,6 +71,8 @@ module.exports = {
     yperiod0: scatterAttrs.yperiod0,
     xperiodalignment: scatterAttrs.xperiodalignment,
     yperiodalignment: scatterAttrs.yperiodalignment,
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
 
     name: {
         valType: 'string',

src/traces/box/defaults.js

@@ -17,6 +17,8 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
     if(traceOut.visible === false) return;
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce);
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     var hasPreCompStats = traceOut._hasPreCompStats;
 

src/traces/box/hover.js

@@ -166,7 +166,7 @@ function hoverOnBoxes(pointData, xval, yval, hovermode) {
         pointData2.attr = attr;
         pointData2[vLetter + '0'] = pointData2[vLetter + '1'] = valPx;
         pointData2[vLetter + 'LabelVal'] = val;
-        pointData2[vLetter + 'Label'] = (t.labels ? t.labels[attr] + ' ' : '') + Axes.hoverLabelText(vAxis, val);
+        pointData2[vLetter + 'Label'] = (t.labels ? t.labels[attr] + ' ' : '') + Axes.hoverLabelText(vAxis, val, trace[vLetter + 'hoverformat']);
 
         // Note: introduced to be able to distinguish a
         // clicked point from a box during click-to-select

src/traces/candlestick/attributes.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var extendFlat = require('../../lib').extendFlat;
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var OHLCattrs = require('../ohlc/attributes');
 var boxAttrs = require('../box/attributes');
 
@@ -21,6 +22,8 @@ module.exports = {
     xperiod: OHLCattrs.xperiod,
     xperiod0: OHLCattrs.xperiod0,
     xperiodalignment: OHLCattrs.xperiodalignment,
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
 
     x: OHLCattrs.x,
     open: OHLCattrs.open,
@@ -46,6 +49,7 @@ module.exports = {
 
     text: OHLCattrs.text,
     hovertext: OHLCattrs.hovertext,
+
     whiskerwidth: extendFlat({}, boxAttrs.whiskerwidth, { dflt: 0 }),
 
     hoverlabel: OHLCattrs.hoverlabel,

src/traces/candlestick/defaults.js

@@ -18,6 +18,8 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     }
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce, {x: true});
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     coerce('line.width');
 

src/traces/cone/attributes.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var colorScaleAttrs = require('../../components/colorscale/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var mesh3dAttrs = require('../mesh3d/attributes');
 var baseAttrs = require('../../plots/attributes');
@@ -152,6 +153,13 @@ var attrs = {
     },
 
     hovertemplate: hovertemplateAttrs({editType: 'calc'}, {keys: ['norm']}),
+    uhoverformat: axisHoverFormat('u', 1),
+    vhoverformat: axisHoverFormat('v', 1),
+    whoverformat: axisHoverFormat('w', 1),
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
+    zhoverformat: axisHoverFormat('z'),
+
     showlegend: extendFlat({}, baseAttrs.showlegend, {dflt: false})
 };
 

src/traces/cone/defaults.js

@@ -45,6 +45,12 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     coerce('text');
     coerce('hovertext');
     coerce('hovertemplate');
+    coerce('uhoverformat');
+    coerce('vhoverformat');
+    coerce('whoverformat');
+    coerce('xhoverformat');
+    coerce('yhoverformat');
+    coerce('zhoverformat');
 
     // disable 1D transforms (for now)
     traceOut._length = null;

src/traces/contour/attributes.js

@@ -2,6 +2,7 @@
 
 var heatmapAttrs = require('../heatmap/attributes');
 var scatterAttrs = require('../scatter/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var colorScaleAttrs = require('../../components/colorscale/attributes');
 var dash = require('../../components/drawing/attributes').dash;
 var fontAttrs = require('../../plots/font_attributes');
@@ -36,7 +37,9 @@ module.exports = extendFlat({
     transpose: heatmapAttrs.transpose,
     xtype: heatmapAttrs.xtype,
     ytype: heatmapAttrs.ytype,
-    zhoverformat: heatmapAttrs.zhoverformat,
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
+    zhoverformat: axisHoverFormat('z', 1),
     hovertemplate: heatmapAttrs.hovertemplate,
     hoverongaps: heatmapAttrs.hoverongaps,
     connectgaps: extendFlat({}, heatmapAttrs.connectgaps, {

src/traces/contour/defaults.js

@@ -26,6 +26,8 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     }
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce);
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     coerce('text');
     coerce('hovertext');

src/traces/funnel/attributes.js

@@ -3,6 +3,7 @@
 var barAttrs = require('../bar/attributes');
 var lineAttrs = require('../scatter/attributes').line;
 var baseAttrs = require('../../plots/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var texttemplateAttrs = require('../../plots/template_attributes').texttemplateAttrs;
 var constants = require('./constants');
@@ -23,6 +24,8 @@ module.exports = {
     yperiod0: barAttrs.yperiod0,
     xperiodalignment: barAttrs.xperiodalignment,
     yperiodalignment: barAttrs.yperiodalignment,
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
 
     hovertext: barAttrs.hovertext,
     hovertemplate: hovertemplateAttrs({}, {

src/traces/funnel/defaults.js

@@ -21,6 +21,8 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
     }
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce);
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     coerce('orientation', (traceOut.y && !traceOut.x) ? 'v' : 'h');
     coerce('offset');

src/traces/heatmap/attributes.js

@@ -2,9 +2,9 @@
 
 var scatterAttrs = require('../scatter/attributes');
 var baseAttrs = require('../../plots/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var colorScaleAttrs = require('../../components/colorscale/attributes');
-var FORMAT_LINK = require('../../constants/docs').FORMAT_LINK;
 
 var extendFlat = require('../../lib/extend').extendFlat;
 
@@ -111,16 +111,10 @@ module.exports = extendFlat({
         editType: 'plot',
         description: 'Sets the vertical gap (in pixels) between bricks.'
     },
-    zhoverformat: {
-        valType: 'string',
-        dflt: '',
-        editType: 'none',
-        description: [
-            'Sets the hover text formatting rule using d3 formatting mini-languages',
-            'which are very similar to those in Python. See:',
-            FORMAT_LINK
-        ].join(' ')
-    },
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
+    zhoverformat: axisHoverFormat('z', 1),
+
     hovertemplate: hovertemplateAttrs(),
     showlegend: extendFlat({}, baseAttrs.showlegend, {dflt: false})
 }, {

src/traces/heatmap/defaults.js

@@ -21,6 +21,8 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     }
 
     handlePeriodDefaults(traceIn, traceOut, layout, coerce);
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     coerce('text');
     coerce('hovertext');

src/traces/histogram/attributes.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var barAttrs = require('../bar/attributes');
+var axisHoverFormat = require('../../plots/hoverformat_attributes');
 var hovertemplateAttrs = require('../../plots/template_attributes').hovertemplateAttrs;
 var makeBinAttrs = require('./bin_attributes');
 var constants = require('./constants');
@@ -22,6 +23,9 @@ module.exports = {
         ].join(' ')
     },
 
+    xhoverformat: axisHoverFormat('x'),
+    yhoverformat: axisHoverFormat('y'),
+
     text: extendFlat({}, barAttrs.text, {
         description: [
             'Sets hover text elements associated with each bar.',

src/traces/histogram/defaults.js

@@ -24,6 +24,8 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     coerce('text');
     coerce('hovertext');
     coerce('hovertemplate');
+    coerce('xhoverformat');
+    coerce('yhoverformat');
 
     var orientation = coerce('orientation', (y && !x) ? 'h' : 'v');
     var sampleLetter = orientation === 'v' ? 'x' : 'y';