fix scattercarpet attr description + add mock with mode:text

Author: etpinard

src/traces/scattercarpet/attributes.js

@@ -34,33 +34,26 @@ module.exports = {
     a: {
         valType: 'data_array',
         editType: 'calc',
-        description: [
-            'Sets the quantity of component `a` in each data point.',
-            'If `a`, `b`, and `c` are all provided, they need not be',
-            'normalized, only the relative values matter. If only two',
-            'arrays are provided they must be normalized to match',
-            '`ternary<i>.sum`.'
-        ].join(' ')
+        description: 'Sets the a-axis coordinates.'
     },
     b: {
         valType: 'data_array',
         editType: 'calc',
-        description: [
-            'Sets the quantity of component `a` in each data point.',
-            'If `a`, `b`, and `c` are all provided, they need not be',
-            'normalized, only the relative values matter. If only two',
-            'arrays are provided they must be normalized to match',
-            '`ternary<i>.sum`.'
-        ].join(' ')
+        description: 'Sets the b-axis coordinates.'
     },
     mode: extendFlat({}, scatterAttrs.mode, {dflt: 'markers'}),
     text: extendFlat({}, scatterAttrs.text, {
         description: [
-            'Sets text elements associated with each (a,b,c) point.',
+            'Sets text elements associated with each (a,b) point.',
+            'If a single string, the same string appears over',
+            'all the data points.',
+            'If an array of strings, the items are mapped in order to the',
+            'the data points in (a,b).',
+            'If trace `hoverinfo` contains a *text* flag and *hovertext* is not set,',
+            'these elements will be seen in the hover labels.'
             'If a single string, the same string appears over',
             'all the data points.',
             'If an array of strings, the items are mapped in order to the',
-            'the data points in (a,b,c).'
         ].join(' ')
     }),
     line: {

test/image/baselines/scattercarpet-text.png

@@ -0,0 +1,53 @@
+{
+  "data": [
+    {
+      "type": "carpet",
+      "a": [0.1, 0.2, 0.3],
+      "b": [1, 2, 3],
+      "y": [
+        [1, 2.2, 3],
+        [1.5, 2.7, 3.5],
+        [1.7, 2.9, 3.7]
+      ],
+      "cheaterslope": 1,
+      "aaxis": {
+        "title": "a",
+        "tickmode": "linear",
+        "dtick": 0.05
+      },
+      "baxis": {
+        "title": "b",
+        "tickmode": "linear",
+        "dtick": 0.5
+      }
+    },
+    {
+      "type": "scattercarpet",
+      "name": "b = 1.5",
+      "mode": "markers+text",
+      "a": [0.05, 0.15, 0.25, 0.35],
+      "b": [1.5, 1.5, 1.5, 1.5],
+      "text": ["a", "b", "c", "d"]
+    },
+    {
+      "type": "scattercarpet",
+      "name": "b = 2",
+      "mode": "markers+lines+text",
+      "a": [0.05, 0.15, 0.25, 0.35],
+      "b": [2, 2, 2, 2],
+      "text": ["a", "b", "c", "d"]
+    },
+    {
+      "type": "scattercarpet",
+      "name": "b = 2.5",
+      "mode": "text",
+      "a": [0.05, 0.15, 0.25, 0.35],
+      "b": [2.5, 2.5, 2.5, 2.5],
+      "text": ["a", "b", "c", "d"]
+    }
+  ],
+  "layout": {
+    "title": "scattercarpet with text",
+    "hovermode": "closest"
+  }
+}