Add carpet meta

Author: rreusser

src/traces/carpet/index.js

@@ -23,6 +23,13 @@ Carpet.basePlotModule = require('../../plots/cartesian');
 Carpet.categories = ['cartesian', 'carpet', 'carpetAxis', 'notLegendIsolatable'];
 Carpet.meta = {
     description: [
+        'The data describing carpet axis layout is set in `y` and (optionally)',
+        'also `x`. If only `y` is present, `x` the plot is interpreted as a',
+        'cheater plot and is filled in using the `y` values.',
+
+        '`x` and `y` may either be 2D arrays matching with each dimension matching',
+        'that of `a` and `b`, or they may be 1D arrays with total length equal to',
+        'that of `a` and `b`.'
     ].join(' ')
 };
 

src/traces/contourcarpet/index.js

@@ -23,7 +23,12 @@ ContourCarpet.basePlotModule = require('../../plots/cartesian');
 ContourCarpet.categories = ['cartesian', 'carpet', 'contour', 'symbols', 'showLegend', 'hasLines', 'carpetDependent'];
 ContourCarpet.meta = {
     hrName: 'contour_carpet',
-    description: [].join(' ')
+    description: [
+        'Plots contours on either the first carpet axis or the',
+        'carpet axis with a matching `carpet` attribute. Data `z`',
+        'is interpreted as matching that of the corresponding carpet',
+        'axis.'
+    ].join(' ')
 };
 
 module.exports = ContourCarpet;

src/traces/scattercarpet/index.js

@@ -25,7 +25,10 @@ ScatterCarpet.basePlotModule = require('../../plots/cartesian');
 ScatterCarpet.categories = ['carpet', 'symbols', 'markerColorscale', 'showLegend', 'carpetDependent'];
 ScatterCarpet.meta = {
     hrName: 'scatter_carpet',
-    description: [].join(' ')
+    description: [
+        'Plots a scatter trace on either the first carpet axis or the',
+        'carpet axis with a matching `carpet` attribute.'
+    ].join(' ')
 };
 
 module.exports = ScatterCarpet;