Handle 'missing' matching axes

src/plot_api/subroutines.js

@@ -670,13 +670,15 @@ exports.doAutoRangeAndConstraints = function(gd) {
     var fullLayout = gd._fullLayout;
     var axList = Axes.list(gd, '', true);
     var matchGroups = fullLayout._axisMatchGroups || [];
+    var axLookup = {};
     var ax;
     var axRng;
 
     for(var i = 0; i < axList.length; i++) {
         ax = axList[i];
         cleanAxisConstraints(gd, ax);
         doAutoRange(gd, ax);
+        axLookup[ax._id] = 1;
     }
 
     enforceAxisConstraints(gd);
@@ -689,6 +691,10 @@ exports.doAutoRangeAndConstraints = function(gd) {
 
         for(id in group) {
             ax = Axes.getFromId(gd, id);
+
+            // skip over 'missing' axes which do not pass through doAutoRange
+            if(!axLookup[ax._id]) continue;
+            // if one axis has autorange false, we're done
             if(ax.autorange === false) continue groupLoop;
 
             axRng = Lib.simpleMap(ax.range, ax.r2l);

src/plots/cartesian/axes.js

@@ -1669,10 +1669,14 @@ axes.drawOne = function(gd, ax, opts) {
     var axId = ax._id;
     var axLetter = axId.charAt(0);
     var counterLetter = axes.counterLetter(axId);
-    var mainLinePosition = ax._mainLinePosition;
-    var mainMirrorPosition = ax._mainMirrorPosition;
     var mainPlotinfo = fullLayout._plots[ax._mainSubplot];
+
+    // this happens when updating matched group with 'missing' axes
+    if(!mainPlotinfo) return;
+
     var mainAxLayer = mainPlotinfo[axLetter + 'axislayer'];
+    var mainLinePosition = ax._mainLinePosition;
+    var mainMirrorPosition = ax._mainMirrorPosition;
 
     var vals = ax._vals = axes.calcTicks(ax);
 

src/plots/cartesian/constants.js

@@ -7,11 +7,10 @@
 */
 
 'use strict';
-var counterRegex = require('../../lib/regex').counter;
 
+var counterRegex = require('../../lib/regex').counter;
 
 module.exports = {
-
     idRegex: {
         x: counterRegex('x'),
         y: counterRegex('y')

src/plots/cartesian/layout_defaults.js

@@ -24,6 +24,8 @@ var axisIds = require('./axis_ids');
 var id2name = axisIds.id2name;
 var name2id = axisIds.name2id;
 
+var AX_ID_PATTERN = require('./constants').AX_ID_PATTERN;
+
 var Registry = require('../../registry');
 var traceIs = Registry.traceIs;
 var getComponentMethod = Registry.getComponentMethod;
@@ -133,7 +135,28 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
 
     var bgColor = Color.combine(plotBgColor, layoutOut.paper_bgcolor);
 
-    var axName, axLetter, axLayoutIn, axLayoutOut;
+    // name of single axis (e.g. 'xaxis', 'yaxis2')
+    var axName;
+    // id of single axis (e.g. 'y', 'x5')
+    var axId;
+    // 'x' or 'y'
+    var axLetter;
+    // input layout axis container
+    var axLayoutIn;
+    // full layout axis container
+    var axLayoutOut;
+
+    function newAxLayoutOut() {
+        var traces = ax2traces[axName] || [];
+        axLayoutOut._traceIndices = traces.map(function(t) { return t._expandedIndex; });
+        axLayoutOut._annIndices = [];
+        axLayoutOut._shapeIndices = [];
+        axLayoutOut._imgIndices = [];
+        axLayoutOut._subplotsWith = [];
+        axLayoutOut._counterAxes = [];
+        axLayoutOut._name = axLayoutOut._attr = axName;
+        axLayoutOut._id = axId;
+    }
 
     function coerce(attr, dflt) {
         return Lib.coerce(axLayoutIn, axLayoutOut, layoutAttributes, attr, dflt);
@@ -147,9 +170,6 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
         return (axLetter === 'x') ? yIds : xIds;
     }
 
-    var counterAxes = {x: getCounterAxes('x'), y: getCounterAxes('y')};
-    var allAxisIds = counterAxes.x.concat(counterAxes.y);
-
     function getOverlayableAxes(axLetter, axName) {
         var list = (axLetter === 'x') ? xNames : yNames;
         var out = [];
@@ -165,9 +185,26 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
         return out;
     }
 
+    // list of available counter axis names
+    var counterAxes = {x: getCounterAxes('x'), y: getCounterAxes('y')};
+    // list of all x AND y axis ids
+    var allAxisIds = counterAxes.x.concat(counterAxes.y);
+    // list of axis ids that axes in axNames have a reference to,
+    // even though they are missing from allAxisIds
+    var missingMatchedAxisIds = [];
+
+    // fill in 'missing' axis list when an axis is set to match an axis
+    // not part of the allAxisIds list
+    function addMissingMatchedAxis(matchesIn) {
+        if(AX_ID_PATTERN.test(matchesIn) && allAxisIds.indexOf(matchesIn) === -1) {
+            Lib.pushUnique(missingMatchedAxisIds, matchesIn);
+        }
+    }
+
     // first pass creates the containers, determines types, and handles most of the settings
     for(i = 0; i < axNames.length; i++) {
         axName = axNames[i];
+        axId = name2id(axName);
         axLetter = axName.charAt(0);
 
         if(!Lib.isPlainObject(layoutIn[axName])) {
@@ -176,20 +213,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
 
         axLayoutIn = layoutIn[axName];
         axLayoutOut = Template.newContainer(layoutOut, axName, axLetter + 'axis');
-
-        var traces = ax2traces[axName] || [];
-        axLayoutOut._traceIndices = traces.map(function(t) { return t._expandedIndex; });
-        axLayoutOut._annIndices = [];
-        axLayoutOut._shapeIndices = [];
-        axLayoutOut._imgIndices = [];
-        axLayoutOut._subplotsWith = [];
-        axLayoutOut._counterAxes = [];
-
-        // set up some private properties
-        axLayoutOut._name = axLayoutOut._attr = axName;
-        var id = axLayoutOut._id = name2id(axName);
-
-        var overlayableAxes = getOverlayableAxes(axLetter, axName);
+        newAxLayoutOut();
 
         var visibleDflt =
             (axLetter === 'x' && !xaMustDisplay[axName] && xaMayHide[axName]) ||
@@ -207,13 +231,13 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
             font: layoutOut.font,
             outerTicks: outerTicks[axName],
             showGrid: !noGrids[axName],
-            data: traces,
+            data: ax2traces[axName] || [],
             bgColor: bgColor,
             calendar: layoutOut.calendar,
             automargin: true,
             visibleDflt: visibleDflt,
             reverseDflt: reverseDflt,
-            splomStash: ((layoutOut._splomAxes || {})[axLetter] || {})[id]
+            splomStash: ((layoutOut._splomAxes || {})[axLetter] || {})[axId]
         };
 
         coerce('uirevision', layoutOut.uirevision);
@@ -239,12 +263,60 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
         handlePositionDefaults(axLayoutIn, axLayoutOut, coerce, {
             letter: axLetter,
             counterAxes: counterAxes[axLetter],
-            overlayableAxes: overlayableAxes,
+            overlayableAxes: getOverlayableAxes(axLetter, axName),
             grid: layoutOut.grid
         });
 
         coerce('title.standoff');
 
+        addMissingMatchedAxis(axLayoutIn.matches);
+
+        axLayoutOut._input = axLayoutIn;
+    }
+
+    // coerce the 'missing' axes
+    i = 0;
+    while(i < missingMatchedAxisIds.length) {
+        axId = missingMatchedAxisIds[i++];
+        axName = id2name(axId);
+        axLetter = axName.charAt(0);
+
+        if(!Lib.isPlainObject(layoutIn[axName])) {
+            layoutIn[axName] = {};
+        }
+
+        axLayoutIn = layoutIn[axName];
+        axLayoutOut = Template.newContainer(layoutOut, axName, axLetter + 'axis');
+        newAxLayoutOut();
+
+        var defaultOptions2 = {
+            letter: axLetter,
+            font: layoutOut.font,
+            outerTicks: outerTicks[axName],
+            showGrid: !noGrids[axName],
+            data: [],
+            bgColor: bgColor,
+            calendar: layoutOut.calendar,
+            automargin: true,
+            visibleDflt: false,
+            reverseDflt: false,
+            splomStash: ((layoutOut._splomAxes || {})[axLetter] || {})[axId]
+        };
+
+        coerce('uirevision', layoutOut.uirevision);
+
+        handleTypeDefaults(axLayoutIn, axLayoutOut, coerce, defaultOptions2);
+        handleAxisDefaults(axLayoutIn, axLayoutOut, coerce, defaultOptions2, layoutOut);
+
+        handlePositionDefaults(axLayoutIn, axLayoutOut, coerce, {
+            letter: axLetter,
+            counterAxes: counterAxes[axLetter],
+            overlayableAxes: getOverlayableAxes(axLetter, axName),
+            grid: layoutOut.grid
+        });
+
+        addMissingMatchedAxis(axLayoutIn.matches);
+
         axLayoutOut._input = axLayoutIn;
     }
 
@@ -295,25 +367,32 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
     var constraintGroups = layoutOut._axisConstraintGroups = [];
     // similar to _axisConstraintGroups, but for matching axes
     var matchGroups = layoutOut._axisMatchGroups = [];
+    // make sure to include 'missing' axes here
+    var allAxisIdsIncludingMissing = allAxisIds.concat(missingMatchedAxisIds);
+    var axNamesIncludingMissing = axNames.concat(Lib.simpleMap(missingMatchedAxisIds, id2name));
 
-    for(i = 0; i < axNames.length; i++) {
-        axName = axNames[i];
+    for(i = 0; i < axNamesIncludingMissing.length; i++) {
+        axName = axNamesIncludingMissing[i];
         axLetter = axName.charAt(0);
         axLayoutIn = layoutIn[axName];
         axLayoutOut = layoutOut[axName];
 
         var scaleanchorDflt;
         if(axLetter === 'y' && !axLayoutIn.hasOwnProperty('scaleanchor') && axHasImage[axName]) {
             scaleanchorDflt = axLayoutOut.anchor;
-        } else {scaleanchorDflt = undefined;}
+        } else {
+            scaleanchorDflt = undefined;
+        }
 
         var constrainDflt;
         if(!axLayoutIn.hasOwnProperty('constrain') && axHasImage[axName]) {
             constrainDflt = 'domain';
-        } else {constrainDflt = undefined;}
+        } else {
+            constrainDflt = undefined;
+        }
 
         handleConstraintDefaults(axLayoutIn, axLayoutOut, coerce, {
-            allAxisIds: allAxisIds,
+            allAxisIds: allAxisIdsIncludingMissing,
             layoutOut: layoutOut,
             scaleanchorDflt: scaleanchorDflt,
             constrainDflt: constrainDflt
@@ -324,7 +403,6 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
         var group = matchGroups[i];
         var rng = null;
         var autorange = null;
-        var axId;
 
         // find 'matching' range attrs
         for(axId in group) {

src/plots/plots.js

@@ -1272,10 +1272,13 @@ plots.supplyTraceDefaults = function(traceIn, traceOut, colorIndex, layout, trac
             var subplots = layout._subplots;
             var subplotId = '';
 
-            // TODO - currently if we draw an empty gl2d subplot, it draws
-            // nothing then gets stuck and you can't get it back without newPlot
-            // sort this out in the regl refactor? but for now just drop empty gl2d subplots
-            if(basePlotModule.name !== 'gl2d' || visible) {
+            if(
+                visible ||
+                basePlotModule.name !== 'gl2d' // for now just drop empty gl2d subplots
+                // TODO - currently if we draw an empty gl2d subplot, it draws
+                // nothing then gets stuck and you can't get it back without newPlot
+                // sort this out in the regl refactor?
+            ) {
                 if(Array.isArray(subplotAttr)) {
                     for(i = 0; i < subplotAttr.length; i++) {
                         var attri = subplotAttr[i];