feat: Add minorloglabels to cartesian axes

draftlogs/7468_add.md

@@ -0,0 +1 @@
+ - Add `minorloglabels` to cartesian axes [#7468](https://github.com/plotly/plotly.js/pull/7468)

src/plots/cartesian/axes.js

@@ -1899,26 +1899,41 @@ function formatLog(ax, out, hover, extraPrecision, hideexp) {
 
     if(tickformat || (dtChar0 === 'L')) {
         out.text = numFormat(Math.pow(10, x), ax, hideexp, extraPrecision);
-    } else if(isNumeric(dtick) || ((dtChar0 === 'D') && (Lib.mod(x + 0.01, 1) < 0.1))) {
-        var p = Math.round(x);
+    } else if(isNumeric(dtick) || ((dtChar0 === 'D') &&
+        (ax.minorloglabels === 'complete' || Lib.mod(x + 0.01, 1) < 0.1))) {
+
+        var isMinor;
+        if(ax.minorloglabels === 'complete' && !(Lib.mod(x + 0.01, 1) < 0.1)) {
+            isMinor = true;
+            out.fontSize *= 0.75;
+        }
+
+        var exponentialString = Math.pow(10, x).toExponential(0);
+        var parts = exponentialString.split('e');
+
+        var p = +parts[1];
         var absP = Math.abs(p);
         var exponentFormat = ax.exponentformat;
         if(exponentFormat === 'power' || (isSIFormat(exponentFormat) && beyondSI(p))) {
-            if(p === 0) out.text = 1;
-            else if(p === 1) out.text = '10';
-            else out.text = '10<sup>' + (p > 1 ? '' : MINUS_SIGN) + absP + '</sup>';
+            out.text = parts[0];
+            if(absP > 0) out.text += 'x10';
+            if(out.text === '1x10') out.text = '10';
+            if(p !== 0 && p !== 1) out.text += '<sup>' + (p > 0 ? '' : MINUS_SIGN) + absP + '</sup>';
 
             out.fontSize *= 1.25;
         } else if((exponentFormat === 'e' || exponentFormat === 'E') && absP > 2) {
-            out.text = '1' + exponentFormat + (p > 0 ? '+' : MINUS_SIGN) + absP;
+            out.text = parts[0] + exponentFormat + (p > 0 ? '+' : MINUS_SIGN) + absP;
         } else {
             out.text = numFormat(Math.pow(10, x), ax, '', 'fakehover');
             if(dtick === 'D1' && ax._id.charAt(0) === 'y') {
                 out.dy -= out.fontSize / 6;
             }
         }
     } else if(dtChar0 === 'D') {
-        out.text = String(Math.round(Math.pow(10, Lib.mod(x, 1))));
+        out.text =
+            ax.minorloglabels === 'none' ? '' :
+            /* ax.minorloglabels === 'small digits' */ String(Math.round(Math.pow(10, Lib.mod(x, 1))));
+
         out.fontSize *= 0.75;
     } else throw 'unrecognized dtick ' + String(dtick);
 
@@ -3770,7 +3785,7 @@ axes.drawLabels = function(gd, ax, opts) {
 
                     var sel;
                     if(e.K === ZERO_PATH.K) {
-                        var zerolineLayer = zerolineIsAbove ? mainPlotinfo.zerolinelayerAbove : mainPlotinfo.zerolinelayer; 
+                        var zerolineLayer = zerolineIsAbove ? mainPlotinfo.zerolinelayerAbove : mainPlotinfo.zerolinelayer;
                         sel = zerolineLayer.selectAll('.' + ax._id + 'zl');
                     } else if(e.K === MINORGRID_PATH.K) sel = mainPlotinfo.minorGridlayer.selectAll('.' + ax._id);
                     else if(e.K === GRID_PATH.K) sel = mainPlotinfo.gridlayer.selectAll('.' + ax._id);

src/plots/cartesian/layout_attributes.js

@@ -1136,6 +1136,19 @@ module.exports = {
         editType: 'ticks'
     },
 
+    minorloglabels: {
+        valType: 'enumerated',
+        values: ['small digits', 'complete', 'none'],
+        dflt: 'metric',
+        editType: 'calc',
+        description: [
+            'Determines how minor log labels are displayed.',
+            'If *small digits*, small digits i.e. 2 or 5 are displayed.',
+            'If *complete*, complete digits are displayed.',
+            'If *none*, no labels are displayed.',
+        ].join(' ')
+    },
+
     layer: {
         valType: 'enumerated',
         values: ['above traces', 'below traces'],

src/plots/cartesian/tick_label_defaults.js

@@ -70,6 +70,10 @@ module.exports = function handleTickLabelDefaults(containerIn, containerOut, coe
                 coerce('separatethousands');
             }
         }
+
+        if(!options.noMinorloglabels && axType === 'log') {
+            coerce('minorloglabels');
+        }
     }
 };
 

src/plots/gl3d/layout/axis_defaults.js

@@ -42,6 +42,7 @@ module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, options) {
                 data: options.data,
                 showGrid: true,
                 noAutotickangles: true,
+                noMinorloglabels: true,
                 noTicklabelindex: true,
                 noTickson: true,
                 noTicklabelmode: true,

src/plots/polar/layout_attributes.js

@@ -36,6 +36,7 @@ var axisTickAttrs = overrideAll({
     ticklabelstep: axesAttrs.ticklabelstep,
     showticklabels: axesAttrs.showticklabels,
     labelalias: axesAttrs.labelalias,
+    minorloglabels: axesAttrs.minorloglabels,
     showtickprefix: axesAttrs.showtickprefix,
     tickprefix: axesAttrs.tickprefix,
     showticksuffix: axesAttrs.showticksuffix,

test/image/mocks/zz-minorloglabels.json

@@ -0,0 +1,86 @@
+{
+    "data": [{
+        "x": [0.001, 0.01, 0.1, 1, 10, 100, 1000],
+        "y": [0, 1, 2, 3, 4, 5, 6]
+    }, {
+        "xaxis": "x2",
+        "yaxis": "y2",
+        "x": [0.001, 0.01, 0.1, 1, 10, 100, 1000],
+        "y": [0, 1, 2, 3, 4, 5, 6]
+    }, {
+        "xaxis": "x3",
+        "yaxis": "y3",
+        "x": [0.001, 0.01, 0.1, 1, 10, 100, 1000],
+        "y": [0, 1, 2, 3, 4, 5, 6]
+    }, {
+        "xaxis": "x4",
+        "yaxis": "y4",
+        "x": [0.00001, 0.0001, 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000, 10000, 100000],
+        "y": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    }, {
+        "xaxis": "x5",
+        "yaxis": "y5",
+        "x": [0.00001, 0.0001, 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000, 10000, 100000],
+        "y": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    }, {
+        "xaxis": "x6",
+        "yaxis": "y6",
+        "x": [0.00001, 0.0001, 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000, 10000, 100000],
+        "y": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    }],
+    "layout": {
+        "grid": {
+            "rows": 7,
+            "columns": 1,
+            "ygap": 0.8,
+            "pattern": "independent"
+        },
+        "xaxis": {
+            "title": { "text": "none" },
+            "type": "log",
+            "minorloglabels": "none",
+            "minor": { "showgrid": true }
+        },
+        "xaxis2": {
+            "title": { "text": "small digits" },
+            "dtick": "D1",
+            "type": "log",
+            "minorloglabels": "small digits"
+        },
+        "xaxis3": {
+            "title": { "text": "small digits" },
+            "dtick": "D2",
+            "type": "log",
+            "minorloglabels": "small digits"
+        },
+        "xaxis4": {
+            "title": { "text": "complete" },
+            "dtick": "D2",
+            "type": "log",
+            "minorloglabels": "complete",
+            "minor": { "showgrid": true }
+        },
+        "xaxis5": {
+            "title": { "text": "complete <br> exponentformat: 'e'" },
+            "exponentformat": "e",
+            "dtick": "D2",
+            "type": "log",
+            "minorloglabels": "complete",
+            "minor": { "showgrid": true }
+        },
+        "xaxis6": {
+            "title": { "text": "complete <br> exponentformat: 'power'" },
+            "exponentformat": "power",
+            "dtick": "D2",
+            "type": "log",
+            "minorloglabels": "complete",
+            "minor": { "showgrid": true }
+        },
+        "title": {
+            "text": "options of minorloglabels"
+        },
+        "width": 1400,
+        "height": 1200,
+        "showlegend": false
+    }
+}

test/plot-schema.json

@@ -5195,6 +5195,17 @@
       "min": 0,
       "valType": "number"
      },
+     "minorloglabels": {
+      "description": "Determines how minor log labels are displayed. If *small digits*, small digits i.e. 2 or 5 are displayed. If *complete*, complete digits are displayed. If *none*, no labels are displayed.",
+      "dflt": "metric",
+      "editType": "plot",
+      "valType": "enumerated",
+      "values": [
+       "small digits",
+       "complete",
+       "none"
+      ]
+     },
      "nticks": {
       "description": "Specifies the maximum number of ticks for the particular axis. The actual number of ticks will be chosen automatically to be less than or equal to `nticks`. Has an effect only if `tickmode` is set to *auto*.",
       "dflt": 0,
@@ -5892,6 +5903,17 @@
       "min": 0,
       "valType": "number"
      },
+     "minorloglabels": {
+      "description": "Determines how minor log labels are displayed. If *small digits*, small digits i.e. 2 or 5 are displayed. If *complete*, complete digits are displayed. If *none*, no labels are displayed.",
+      "dflt": "metric",
+      "editType": "plot",
+      "valType": "enumerated",
+      "values": [
+       "small digits",
+       "complete",
+       "none"
+      ]
+     },
      "nticks": {
       "description": "Specifies the maximum number of ticks for the particular axis. The actual number of ticks will be chosen automatically to be less than or equal to `nticks`. Has an effect only if `tickmode` is set to *auto*.",
       "dflt": 0,
@@ -13905,6 +13927,17 @@
       "valType": "number"
      }
     },
+    "minorloglabels": {
+     "description": "Determines how minor log labels are displayed. If *small digits*, small digits i.e. 2 or 5 are displayed. If *complete*, complete digits are displayed. If *none*, no labels are displayed.",
+     "dflt": "metric",
+     "editType": "calc",
+     "valType": "enumerated",
+     "values": [
+      "small digits",
+      "complete",
+      "none"
+     ]
+    },
     "mirror": {
      "description": "Determines if the axis lines or/and ticks are mirrored to the opposite side of the plotting area. If *true*, the axis lines are mirrored. If *ticks*, the axis lines and ticks are mirrored. If *false*, mirroring is disable. If *all*, axis lines are mirrored on all shared-axes subplots. If *allticks*, axis lines and ticks are mirrored on all shared-axes subplots.",
      "dflt": false,
@@ -15466,6 +15499,17 @@
       "valType": "number"
      }
     },
+    "minorloglabels": {
+     "description": "Determines how minor log labels are displayed. If *small digits*, small digits i.e. 2 or 5 are displayed. If *complete*, complete digits are displayed. If *none*, no labels are displayed.",
+     "dflt": "metric",
+     "editType": "calc",
+     "valType": "enumerated",
+     "values": [
+      "small digits",
+      "complete",
+      "none"
+     ]
+    },
     "mirror": {
      "description": "Determines if the axis lines or/and ticks are mirrored to the opposite side of the plotting area. If *true*, the axis lines are mirrored. If *ticks*, the axis lines and ticks are mirrored. If *false*, mirroring is disable. If *all*, axis lines are mirrored on all shared-axes subplots. If *allticks*, axis lines and ticks are mirrored on all shared-axes subplots.",
      "dflt": false,