World calendars

lib/calendars.js

@@ -0,0 +1,11 @@
+/**
+* Copyright 2012-2016, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+module.exports = require('../src/components/calendars');

lib/index.js

@@ -54,4 +54,9 @@ Plotly.register([
     require('./groupby')
 ]);
 
+// components
+Plotly.register([
+    require('./calendars')
+]);
+
 module.exports = Plotly;

package.json

@@ -89,7 +89,8 @@
     "superscript-text": "^1.0.0",
     "tinycolor2": "^1.3.0",
     "topojson-client": "^2.1.0",
-    "webgl-context": "^2.2.0"
+    "webgl-context": "^2.2.0",
+    "world-calendars": "^1.0.0"
   },
   "devDependencies": {
     "brfs": "^1.4.3",

src/components/annotations/calc_autorange.js

@@ -69,14 +69,14 @@ function annAutorange(gd) {
         }
 
         if(xa && xa.autorange) {
-            Axes.expand(xa, [xa.l2c(xa.r2l(ann.x))], {
+            Axes.expand(xa, [xa.r2c(ann.x)], {
                 ppadplus: rightSize,
                 ppadminus: leftSize
             });
         }
 
         if(ya && ya.autorange) {
-            Axes.expand(ya, [ya.l2c(ya.r2l(ann.y))], {
+            Axes.expand(ya, [ya.r2c(ann.y)], {
                 ppadplus: bottomSize,
                 ppadminus: topSize
             });

src/components/calendars/calendars.js

@@ -0,0 +1,31 @@
+/**
+* Copyright 2012-2016, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+// a trimmed down version of:
+// https://github.com/alexcjohnson/world-calendars/blob/master/dist/index.js
+
+module.exports = require('world-calendars/dist/main');
+
+require('world-calendars/dist/plus');
+
+require('world-calendars/dist/calendars/chinese');
+require('world-calendars/dist/calendars/coptic');
+require('world-calendars/dist/calendars/discworld');
+require('world-calendars/dist/calendars/ethiopian');
+require('world-calendars/dist/calendars/hebrew');
+require('world-calendars/dist/calendars/islamic');
+require('world-calendars/dist/calendars/julian');
+require('world-calendars/dist/calendars/mayan');
+require('world-calendars/dist/calendars/nanakshahi');
+require('world-calendars/dist/calendars/nepali');
+require('world-calendars/dist/calendars/persian');
+require('world-calendars/dist/calendars/taiwan');
+require('world-calendars/dist/calendars/thai');
+require('world-calendars/dist/calendars/ummalqura');

src/components/calendars/index.js

@@ -0,0 +1,253 @@
+/**
+* Copyright 2012-2016, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+var calendars = require('./calendars');
+
+var Lib = require('../../lib');
+var constants = require('../../constants/numerical');
+
+var EPOCHJD = constants.EPOCHJD;
+var ONEDAY = constants.ONEDAY;
+
+var attributes = {
+    valType: 'enumerated',
+    values: Object.keys(calendars.calendars),
+    role: 'info',
+    dflt: 'gregorian'
+};
+
+var handleDefaults = function(contIn, contOut, attr, dflt) {
+    var attrs = {};
+    attrs[attr] = attributes;
+
+    return Lib.coerce(contIn, contOut, attrs, attr, dflt);
+};
+
+var handleTraceDefaults = function(traceIn, traceOut, coords, layout) {
+    for(var i = 0; i < coords.length; i++) {
+        handleDefaults(traceIn, traceOut, coords[i] + 'calendar', layout.calendar);
+    }
+};
+
+// each calendar needs its own default canonical tick. I would love to use
+// 2000-01-01 (or even 0000-01-01) for them all but they don't necessarily
+// all support either of those dates. Instead I'll use the most significant
+// number they *do* support, biased toward the present day.
+var CANONICAL_TICK = {
+    chinese: '2000-01-01',
+    coptic: '2000-01-01',
+    discworld: '2000-01-01',
+    ethiopian: '2000-01-01',
+    hebrew: '5000-01-01',
+    islamic: '1000-01-01',
+    julian: '2000-01-01',
+    mayan: '5000-01-01',
+    nanakshahi: '1000-01-01',
+    nepali: '2000-01-01',
+    persian: '1000-01-01',
+    jalali: '1000-01-01',
+    taiwan: '1000-01-01',
+    thai: '2000-01-01',
+    ummalqura: '1400-01-01'
+};
+
+// Start on a Sunday - for week ticks
+// Discworld and Mayan calendars don't have 7-day weeks but we're going to give them
+// 7-day week ticks so start on our Sundays.
+// If anyone really cares we can customize the auto tick spacings for these calendars.
+var CANONICAL_SUNDAY = {
+    chinese: '2000-01-02',
+    coptic: '2000-01-03',
+    discworld: '2000-01-03',
+    ethiopian: '2000-01-05',
+    hebrew: '5000-01-01',
+    islamic: '1000-01-02',
+    julian: '2000-01-03',
+    mayan: '5000-01-01',
+    nanakshahi: '1000-01-05',
+    nepali: '2000-01-05',
+    persian: '1000-01-01',
+    jalali: '1000-01-01',
+    taiwan: '1000-01-04',
+    thai: '2000-01-04',
+    ummalqura: '1400-01-06'
+};
+
+var DFLTRANGE = {
+    chinese: ['2000-01-01', '2001-01-01'],
+    coptic: ['1700-01-01', '1701-01-01'],
+    discworld: ['1800-01-01', '1801-01-01'],
+    ethiopian: ['2000-01-01', '2001-01-01'],
+    hebrew: ['5700-01-01', '5701-01-01'],
+    islamic: ['1400-01-01', '1401-01-01'],
+    julian: ['2000-01-01', '2001-01-01'],
+    mayan: ['5200-01-01', '5201-01-01'],
+    nanakshahi: ['0500-01-01', '0501-01-01'],
+    nepali: ['2000-01-01', '2001-01-01'],
+    persian: ['1400-01-01', '1401-01-01'],
+    jalali: ['1400-01-01', '1401-01-01'],
+    taiwan: ['0100-01-01', '0101-01-01'],
+    thai: ['2500-01-01', '2501-01-01'],
+    ummalqura: ['1400-01-01', '1401-01-01']
+};
+
+/*
+ * convert d3 templates to world-calendars templates, so our users only need
+ * to know d3's specifiers. Map space padding to no padding, and unknown fields
+ * to an ugly placeholder
+ */
+var UNKNOWN = '##';
+var d3ToWorldCalendars = {
+    'd': {'0': 'dd', '-': 'd'}, // 2-digit or unpadded day of month
+    'a': {'0': 'D', '-': 'D'}, // short weekday name
+    'A': {'0': 'DD', '-': 'DD'}, // full weekday name
+    'j': {'0': 'oo', '-': 'o'}, // 3-digit or unpadded day of the year
+    'W': {'0': 'ww', '-': 'w'}, // 2-digit or unpadded week of the year (Monday first)
+    'm': {'0': 'mm', '-': 'm'}, // 2-digit or unpadded month number
+    'b': {'0': 'M', '-': 'M'}, // short month name
+    'B': {'0': 'MM', '-': 'MM'}, // full month name
+    'y': {'0': 'yy', '-': 'yy'}, // 2-digit year (map unpadded to zero-padded)
+    'Y': {'0': 'yyyy', '-': 'yyyy'}, // 4-digit year (map unpadded to zero-padded)
+    'U': UNKNOWN, // Sunday-first week of the year
+    'w': UNKNOWN, // day of the week [0(sunday),6]
+    // combined format, we replace the date part with the world-calendar version
+    // and the %X stays there for d3 to handle with time parts
+    '%c': {'0': 'D M m %X yyyy', '-': 'D M m %X yyyy'},
+    '%x': {'0': 'mm/dd/yyyy', '-': 'mm/dd/yyyy'}
+};
+
+function worldCalFmt(fmt, x, calendar) {
+    var dateJD = Math.floor(x + 0.05 / ONEDAY) + EPOCHJD,
+        cDate = getCal(calendar).fromJD(dateJD),
+        i = 0,
+        modifier, directive, directiveLen, directiveObj, replacementPart;
+    while((i = fmt.indexOf('%', i)) !== -1) {
+        modifier = fmt.charAt(i + 1);
+        if(modifier === '0' || modifier === '-' || modifier === '_') {
+            directiveLen = 3;
+            directive = fmt.charAt(i + 1);
+            if(modifier === '_') modifier = '-';
+        }
+        else {
+            directive = modifier;
+            modifier = '0';
+            directiveLen = 2;
+        }
+        directiveObj = d3ToWorldCalendars[directive];
+        if(!directiveObj) {
+            i += directiveLen;
+        }
+        else {
+            // code is recognized as a date part but world-calendars doesn't support it
+            if(directiveObj === UNKNOWN) replacementPart = UNKNOWN;
+
+            // format the cDate according to the translated directive
+            else replacementPart = cDate.formatDate(directiveObj[modifier]);
+
+            fmt = fmt.substr(0, i) + replacementPart + fmt.substr(i + directiveLen);
+            i += replacementPart.length;
+        }
+    }
+    return fmt;
+}
+
+// cache world calendars, so we don't have to reinstantiate
+// during each date-time conversion
+var allCals = {};
+function getCal(calendar) {
+    var calendarObj = allCals[calendar];
+    if(calendarObj) return calendarObj;
+
+    calendarObj = allCals[calendar] = calendars.instance(calendar);
+    return calendarObj;
+}
+
+function makeAttrs(description) {
+    return Lib.extendFlat({}, attributes, { description: description });
+}
+
+function makeTraceAttrsDescription(coord) {
+    return 'Sets the calendar system to use with `' + coord + '` date data.';
+}
+
+var xAttrs = {
+    xcalendar: makeAttrs(makeTraceAttrsDescription('x'))
+};
+
+var xyAttrs = Lib.extendFlat({}, xAttrs, {
+    ycalendar: makeAttrs(makeTraceAttrsDescription('y'))
+});
+
+var xyzAttrs = Lib.extendFlat({}, xyAttrs, {
+    zcalendar: makeAttrs(makeTraceAttrsDescription('z'))
+});
+
+var axisAttrs = makeAttrs([
+    'Sets the calendar system to use for `range` and `tick0`',
+    'if this is a date axis. This does not set the calendar for',
+    'interpreting data on this axis, that\'s specified in the trace',
+    'or via the global `layout.calendar`'
+].join(' '));
+
+module.exports = {
+    moduleType: 'component',
+    name: 'calendars',
+
+    schema: {
+        traces: {
+            scatter: xyAttrs,
+            bar: xyAttrs,
+            heatmap: xyAttrs,
+            contour: xyAttrs,
+            histogram: xyAttrs,
+            histogram2d: xyAttrs,
+            histogram2dcontour: xyAttrs,
+            scatter3d: xyzAttrs,
+            surface: xyzAttrs,
+            mesh3d: xyzAttrs,
+            scattergl: xyAttrs,
+            ohlc: xAttrs,
+            candlestick: xAttrs
+        },
+        layout: {
+            calendar: makeAttrs([
+                'Sets the default calendar system to use for interpreting and',
+                'displaying dates throughout the plot.'
+            ].join(' ')),
+            'xaxis.calendar': axisAttrs,
+            'yaxis.calendar': axisAttrs,
+            'scene.xaxis.calendar': axisAttrs,
+            'scene.yaxis.calendar': axisAttrs,
+            'scene.zaxis.calendar': axisAttrs
+        },
+        transforms: {
+            filter: {
+                calendar: makeAttrs([
+                    'Sets the calendar system to use for `value`, if it is a date.',
+                    'Note that this is not necessarily the same calendar as is used',
+                    'for the target data; that is set by its own calendar attribute,',
+                    'ie `trace.x` uses `trace.xcalendar` etc.'
+                ].join(' '))
+            }
+        }
+    },
+
+    layoutAttributes: attributes,
+
+    handleDefaults: handleDefaults,
+    handleTraceDefaults: handleTraceDefaults,
+
+    CANONICAL_SUNDAY: CANONICAL_SUNDAY,
+    CANONICAL_TICK: CANONICAL_TICK,
+    DFLTRANGE: DFLTRANGE,
+
+    getCal: getCal,
+    worldCalFmt: worldCalFmt
+};

src/components/colorbar/draw.js

@@ -174,7 +174,8 @@ module.exports = function draw(gd, id) {
             axisOptions = {
                 letter: 'y',
                 font: fullLayout.font,
-                noHover: true
+                noHover: true,
+                calendar: fullLayout.calendar  // not really necessary (yet?)
             };
 
         // Coerce w.r.t. Axes layoutAttributes:

src/components/rangeselector/button_attributes.js

@@ -33,7 +33,9 @@ module.exports = {
             '*step* milliseconds back.',
             'For example, with `step` set to *year* and `count` set to *1*',
             'the range update shifts the start of the range back to',
-            'January 01 of the current year.'
+            'January 01 of the current year.',
+            'Month and year *todate* are currently available only',
+            'for the built-in (Gregorian) calendar.'
         ].join(' ')
     },
     count: {

src/components/rangeselector/defaults.js

@@ -16,15 +16,15 @@ var buttonAttrs = require('./button_attributes');
 var constants = require('./constants');
 
 
-module.exports = function handleDefaults(containerIn, containerOut, layout, counterAxes) {
+module.exports = function handleDefaults(containerIn, containerOut, layout, counterAxes, calendar) {
     var selectorIn = containerIn.rangeselector || {},
         selectorOut = containerOut.rangeselector = {};
 
     function coerce(attr, dflt) {
         return Lib.coerce(selectorIn, selectorOut, attributes, attr, dflt);
     }
 
-    var buttons = buttonsDefaults(selectorIn, selectorOut);
+    var buttons = buttonsDefaults(selectorIn, selectorOut, calendar);
 
     var visible = coerce('visible', buttons.length > 0);
     if(!visible) return;
@@ -45,7 +45,7 @@ module.exports = function handleDefaults(containerIn, containerOut, layout, coun
     coerce('borderwidth');
 };
 
-function buttonsDefaults(containerIn, containerOut) {
+function buttonsDefaults(containerIn, containerOut, calendar) {
     var buttonsIn = containerIn.buttons || [],
         buttonsOut = containerOut.buttons = [];
 
@@ -63,7 +63,13 @@ function buttonsDefaults(containerIn, containerOut) {
 
         var step = coerce('step');
         if(step !== 'all') {
-            coerce('stepmode');
+            if(calendar && calendar !== 'gregorian' && (step === 'month' || step === 'year')) {
+                buttonOut.stepmode = 'backward';
+            }
+            else {
+                coerce('stepmode');
+            }
+
             coerce('count');
         }