You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
587 lines
21 KiB
587 lines
21 KiB
/* Pretty handling of time axes.
|
|
|
|
Copyright (c) 2007-2014 IOLA and Ole Laursen.
|
|
Licensed under the MIT license.
|
|
|
|
Set axis.mode to "time" to enable. See the section "Time series data" in
|
|
API.txt for details.
|
|
*/
|
|
|
|
(function($) {
|
|
'use strict';
|
|
|
|
var options = {
|
|
xaxis: {
|
|
timezone: null, // "browser" for local to the client or timezone for timezone-js
|
|
timeformat: null, // format string to use
|
|
twelveHourClock: false, // 12 or 24 time in time mode
|
|
monthNames: null, // list of names of months
|
|
timeBase: 'seconds' // are the values in given in mircoseconds, milliseconds or seconds
|
|
},
|
|
yaxis: {
|
|
timeBase: 'seconds'
|
|
}
|
|
};
|
|
|
|
var floorInBase = $.plot.saturated.floorInBase;
|
|
|
|
// Method to provide microsecond support to Date like classes.
|
|
var CreateMicroSecondDate = function(DateType, microEpoch) {
|
|
var newDate = new DateType(microEpoch);
|
|
|
|
var oldSetTime = newDate.setTime.bind(newDate);
|
|
newDate.update = function(microEpoch) {
|
|
oldSetTime(microEpoch);
|
|
|
|
// Round epoch to 3 decimal accuracy
|
|
microEpoch = Math.round(microEpoch * 1000) / 1000;
|
|
|
|
// Microseconds are stored as integers
|
|
this.microseconds = 1000 * (microEpoch - Math.floor(microEpoch));
|
|
};
|
|
|
|
var oldGetTime = newDate.getTime.bind(newDate);
|
|
newDate.getTime = function () {
|
|
var microEpoch = oldGetTime() + this.microseconds / 1000;
|
|
return microEpoch;
|
|
};
|
|
|
|
newDate.setTime = function (microEpoch) {
|
|
this.update(microEpoch);
|
|
};
|
|
|
|
newDate.getMicroseconds = function() {
|
|
return this.microseconds;
|
|
};
|
|
|
|
newDate.setMicroseconds = function(microseconds) {
|
|
var epochWithoutMicroseconds = oldGetTime();
|
|
var newEpoch = epochWithoutMicroseconds + microseconds / 1000;
|
|
this.update(newEpoch);
|
|
};
|
|
|
|
newDate.setUTCMicroseconds = function(microseconds) { this.setMicroseconds(microseconds); }
|
|
|
|
newDate.getUTCMicroseconds = function() { return this.getMicroseconds(); }
|
|
|
|
newDate.microseconds = null;
|
|
newDate.microEpoch = null;
|
|
newDate.update(microEpoch);
|
|
return newDate;
|
|
}
|
|
|
|
// Returns a string with the date d formatted according to fmt.
|
|
// A subset of the Open Group's strftime format is supported.
|
|
|
|
function formatDate(d, fmt, monthNames, dayNames) {
|
|
if (typeof d.strftime === "function") {
|
|
return d.strftime(fmt);
|
|
}
|
|
|
|
var leftPad = function(n, pad) {
|
|
n = "" + n;
|
|
pad = "" + (pad == null ? "0" : pad);
|
|
return n.length === 1 ? pad + n : n;
|
|
};
|
|
|
|
var formatSubSeconds = function(milliseconds, microseconds, numberDecimalPlaces) {
|
|
var totalMicroseconds = milliseconds * 1000 + microseconds;
|
|
var formattedString;
|
|
if (numberDecimalPlaces < 6 && numberDecimalPlaces > 0) {
|
|
var magnitude = parseFloat('1e' + (numberDecimalPlaces - 6));
|
|
totalMicroseconds = Math.round(Math.round(totalMicroseconds * magnitude) / magnitude);
|
|
formattedString = ('00000' + totalMicroseconds).slice(-6, -(6 - numberDecimalPlaces));
|
|
} else {
|
|
totalMicroseconds = Math.round(totalMicroseconds)
|
|
formattedString = ('00000' + totalMicroseconds).slice(-6);
|
|
}
|
|
return formattedString;
|
|
};
|
|
|
|
var r = [];
|
|
var escape = false;
|
|
var hours = d.getHours();
|
|
var isAM = hours < 12;
|
|
|
|
if (!monthNames) {
|
|
monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
|
|
}
|
|
|
|
if (!dayNames) {
|
|
dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
|
|
}
|
|
|
|
var hours12;
|
|
if (hours > 12) {
|
|
hours12 = hours - 12;
|
|
} else if (hours === 0) {
|
|
hours12 = 12;
|
|
} else {
|
|
hours12 = hours;
|
|
}
|
|
|
|
var decimals = -1;
|
|
for (var i = 0; i < fmt.length; ++i) {
|
|
var c = fmt.charAt(i);
|
|
|
|
if (!isNaN(Number(c)) && Number(c) > 0) {
|
|
decimals = Number(c);
|
|
} else if (escape) {
|
|
switch (c) {
|
|
case 'a': c = "" + dayNames[d.getDay()]; break;
|
|
case 'b': c = "" + monthNames[d.getMonth()]; break;
|
|
case 'd': c = leftPad(d.getDate()); break;
|
|
case 'e': c = leftPad(d.getDate(), " "); break;
|
|
case 'h': // For back-compat with 0.7; remove in 1.0
|
|
case 'H': c = leftPad(hours); break;
|
|
case 'I': c = leftPad(hours12); break;
|
|
case 'l': c = leftPad(hours12, " "); break;
|
|
case 'm': c = leftPad(d.getMonth() + 1); break;
|
|
case 'M': c = leftPad(d.getMinutes()); break;
|
|
// quarters not in Open Group's strftime specification
|
|
case 'q':
|
|
c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
|
|
case 'S': c = leftPad(d.getSeconds()); break;
|
|
case 's': c = "" + formatSubSeconds(d.getMilliseconds(), d.getMicroseconds(), decimals); break;
|
|
case 'y': c = leftPad(d.getFullYear() % 100); break;
|
|
case 'Y': c = "" + d.getFullYear(); break;
|
|
case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
|
|
case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
|
|
case 'w': c = "" + d.getDay(); break;
|
|
}
|
|
r.push(c);
|
|
escape = false;
|
|
} else {
|
|
if (c === "%") {
|
|
escape = true;
|
|
} else {
|
|
r.push(c);
|
|
}
|
|
}
|
|
}
|
|
|
|
return r.join("");
|
|
}
|
|
|
|
// To have a consistent view of time-based data independent of which time
|
|
// zone the client happens to be in we need a date-like object independent
|
|
// of time zones. This is done through a wrapper that only calls the UTC
|
|
// versions of the accessor methods.
|
|
|
|
function makeUtcWrapper(d) {
|
|
function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
|
|
sourceObj[sourceMethod] = function() {
|
|
return targetObj[targetMethod].apply(targetObj, arguments);
|
|
};
|
|
}
|
|
|
|
var utc = {
|
|
date: d
|
|
};
|
|
|
|
// support strftime, if found
|
|
if (d.strftime !== undefined) {
|
|
addProxyMethod(utc, "strftime", d, "strftime");
|
|
}
|
|
|
|
addProxyMethod(utc, "getTime", d, "getTime");
|
|
addProxyMethod(utc, "setTime", d, "setTime");
|
|
|
|
var props = ["Date", "Day", "FullYear", "Hours", "Minutes", "Month", "Seconds", "Milliseconds", "Microseconds"];
|
|
|
|
for (var p = 0; p < props.length; p++) {
|
|
addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
|
|
addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
|
|
}
|
|
|
|
return utc;
|
|
}
|
|
|
|
// select time zone strategy. This returns a date-like object tied to the
|
|
// desired timezone
|
|
function dateGenerator(ts, opts) {
|
|
var maxDateValue = 8640000000000000;
|
|
|
|
if (opts && opts.timeBase === 'seconds') {
|
|
ts *= 1000;
|
|
} else if (opts.timeBase === 'microseconds') {
|
|
ts /= 1000;
|
|
}
|
|
|
|
if (ts > maxDateValue) {
|
|
ts = maxDateValue;
|
|
} else if (ts < -maxDateValue) {
|
|
ts = -maxDateValue;
|
|
}
|
|
|
|
if (opts.timezone === "browser") {
|
|
return CreateMicroSecondDate(Date, ts);
|
|
} else if (!opts.timezone || opts.timezone === "utc") {
|
|
return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
|
|
} else if (typeof timezoneJS !== "undefined" && typeof timezoneJS.Date !== "undefined") {
|
|
var d = CreateMicroSecondDate(timezoneJS.Date, ts);
|
|
// timezone-js is fickle, so be sure to set the time zone before
|
|
// setting the time.
|
|
d.setTimezone(opts.timezone);
|
|
d.setTime(ts);
|
|
return d;
|
|
} else {
|
|
return makeUtcWrapper(CreateMicroSecondDate(Date, ts));
|
|
}
|
|
}
|
|
|
|
// map of app. size of time units in seconds
|
|
var timeUnitSizeSeconds = {
|
|
"microsecond": 0.000001,
|
|
"millisecond": 0.001,
|
|
"second": 1,
|
|
"minute": 60,
|
|
"hour": 60 * 60,
|
|
"day": 24 * 60 * 60,
|
|
"month": 30 * 24 * 60 * 60,
|
|
"quarter": 3 * 30 * 24 * 60 * 60,
|
|
"year": 365.2425 * 24 * 60 * 60
|
|
};
|
|
|
|
// map of app. size of time units in milliseconds
|
|
var timeUnitSizeMilliseconds = {
|
|
"microsecond": 0.001,
|
|
"millisecond": 1,
|
|
"second": 1000,
|
|
"minute": 60 * 1000,
|
|
"hour": 60 * 60 * 1000,
|
|
"day": 24 * 60 * 60 * 1000,
|
|
"month": 30 * 24 * 60 * 60 * 1000,
|
|
"quarter": 3 * 30 * 24 * 60 * 60 * 1000,
|
|
"year": 365.2425 * 24 * 60 * 60 * 1000
|
|
};
|
|
|
|
// map of app. size of time units in microseconds
|
|
var timeUnitSizeMicroseconds = {
|
|
"microsecond": 1,
|
|
"millisecond": 1000,
|
|
"second": 1000000,
|
|
"minute": 60 * 1000000,
|
|
"hour": 60 * 60 * 1000000,
|
|
"day": 24 * 60 * 60 * 1000000,
|
|
"month": 30 * 24 * 60 * 60 * 1000000,
|
|
"quarter": 3 * 30 * 24 * 60 * 60 * 1000000,
|
|
"year": 365.2425 * 24 * 60 * 60 * 1000000
|
|
};
|
|
|
|
// the allowed tick sizes, after 1 year we use
|
|
// an integer algorithm
|
|
|
|
var baseSpec = [
|
|
[1, "microsecond"], [2, "microsecond"], [5, "microsecond"], [10, "microsecond"],
|
|
[25, "microsecond"], [50, "microsecond"], [100, "microsecond"], [250, "microsecond"], [500, "microsecond"],
|
|
[1, "millisecond"], [2, "millisecond"], [5, "millisecond"], [10, "millisecond"],
|
|
[25, "millisecond"], [50, "millisecond"], [100, "millisecond"], [250, "millisecond"], [500, "millisecond"],
|
|
[1, "second"], [2, "second"], [5, "second"], [10, "second"],
|
|
[30, "second"],
|
|
[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
|
|
[30, "minute"],
|
|
[1, "hour"], [2, "hour"], [4, "hour"],
|
|
[8, "hour"], [12, "hour"],
|
|
[1, "day"], [2, "day"], [3, "day"],
|
|
[0.25, "month"], [0.5, "month"], [1, "month"],
|
|
[2, "month"]
|
|
];
|
|
|
|
// we don't know which variant(s) we'll need yet, but generating both is
|
|
// cheap
|
|
|
|
var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
|
|
[1, "year"]]);
|
|
var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
|
|
[1, "year"]]);
|
|
|
|
function dateTickGenerator(axis) {
|
|
var opts = axis.options,
|
|
ticks = [],
|
|
d = dateGenerator(axis.min, opts),
|
|
minSize = 0;
|
|
|
|
// make quarter use a possibility if quarters are
|
|
// mentioned in either of these options
|
|
var spec = (opts.tickSize && opts.tickSize[1] ===
|
|
"quarter") ||
|
|
(opts.minTickSize && opts.minTickSize[1] ===
|
|
"quarter") ? specQuarters : specMonths;
|
|
|
|
var timeUnitSize;
|
|
if (opts.timeBase === 'seconds') {
|
|
timeUnitSize = timeUnitSizeSeconds;
|
|
} else if (opts.timeBase === 'microseconds') {
|
|
timeUnitSize = timeUnitSizeMicroseconds;
|
|
} else {
|
|
timeUnitSize = timeUnitSizeMilliseconds;
|
|
}
|
|
|
|
if (opts.minTickSize !== null && opts.minTickSize !== undefined) {
|
|
if (typeof opts.tickSize === "number") {
|
|
minSize = opts.tickSize;
|
|
} else {
|
|
minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
|
|
}
|
|
}
|
|
|
|
for (var i = 0; i < spec.length - 1; ++i) {
|
|
if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]] +
|
|
spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 &&
|
|
spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
var size = spec[i][0];
|
|
var unit = spec[i][1];
|
|
// special-case the possibility of several years
|
|
if (unit === "year") {
|
|
// if given a minTickSize in years, just use it,
|
|
// ensuring that it's an integer
|
|
|
|
if (opts.minTickSize !== null && opts.minTickSize !== undefined && opts.minTickSize[1] === "year") {
|
|
size = Math.floor(opts.minTickSize[0]);
|
|
} else {
|
|
var magn = parseFloat('1e' + Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
|
|
var norm = (axis.delta / timeUnitSize.year) / magn;
|
|
|
|
if (norm < 1.5) {
|
|
size = 1;
|
|
} else if (norm < 3) {
|
|
size = 2;
|
|
} else if (norm < 7.5) {
|
|
size = 5;
|
|
} else {
|
|
size = 10;
|
|
}
|
|
|
|
size *= magn;
|
|
}
|
|
|
|
// minimum size for years is 1
|
|
|
|
if (size < 1) {
|
|
size = 1;
|
|
}
|
|
}
|
|
|
|
axis.tickSize = opts.tickSize || [size, unit];
|
|
var tickSize = axis.tickSize[0];
|
|
unit = axis.tickSize[1];
|
|
|
|
var step = tickSize * timeUnitSize[unit];
|
|
|
|
if (unit === "microsecond") {
|
|
d.setMicroseconds(floorInBase(d.getMicroseconds(), tickSize));
|
|
} else if (unit === "millisecond") {
|
|
d.setMilliseconds(floorInBase(d.getMilliseconds(), tickSize));
|
|
} else if (unit === "second") {
|
|
d.setSeconds(floorInBase(d.getSeconds(), tickSize));
|
|
} else if (unit === "minute") {
|
|
d.setMinutes(floorInBase(d.getMinutes(), tickSize));
|
|
} else if (unit === "hour") {
|
|
d.setHours(floorInBase(d.getHours(), tickSize));
|
|
} else if (unit === "month") {
|
|
d.setMonth(floorInBase(d.getMonth(), tickSize));
|
|
} else if (unit === "quarter") {
|
|
d.setMonth(3 * floorInBase(d.getMonth() / 3,
|
|
tickSize));
|
|
} else if (unit === "year") {
|
|
d.setFullYear(floorInBase(d.getFullYear(), tickSize));
|
|
}
|
|
|
|
// reset smaller components
|
|
|
|
if (step >= timeUnitSize.millisecond) {
|
|
if (step >= timeUnitSize.second) {
|
|
d.setMicroseconds(0);
|
|
} else {
|
|
d.setMicroseconds(d.getMilliseconds() * 1000);
|
|
}
|
|
}
|
|
if (step >= timeUnitSize.minute) {
|
|
d.setSeconds(0);
|
|
}
|
|
if (step >= timeUnitSize.hour) {
|
|
d.setMinutes(0);
|
|
}
|
|
if (step >= timeUnitSize.day) {
|
|
d.setHours(0);
|
|
}
|
|
if (step >= timeUnitSize.day * 4) {
|
|
d.setDate(1);
|
|
}
|
|
if (step >= timeUnitSize.month * 2) {
|
|
d.setMonth(floorInBase(d.getMonth(), 3));
|
|
}
|
|
if (step >= timeUnitSize.quarter * 2) {
|
|
d.setMonth(floorInBase(d.getMonth(), 6));
|
|
}
|
|
if (step >= timeUnitSize.year) {
|
|
d.setMonth(0);
|
|
}
|
|
|
|
var carry = 0;
|
|
var v = Number.NaN;
|
|
var v1000;
|
|
var prev;
|
|
do {
|
|
prev = v;
|
|
v1000 = d.getTime();
|
|
if (opts && opts.timeBase === 'seconds') {
|
|
v = v1000 / 1000;
|
|
} else if (opts && opts.timeBase === 'microseconds') {
|
|
v = v1000 * 1000;
|
|
} else {
|
|
v = v1000;
|
|
}
|
|
|
|
ticks.push(v);
|
|
|
|
if (unit === "month" || unit === "quarter") {
|
|
if (tickSize < 1) {
|
|
// a bit complicated - we'll divide the
|
|
// month/quarter up but we need to take
|
|
// care of fractions so we don't end up in
|
|
// the middle of a day
|
|
d.setDate(1);
|
|
var start = d.getTime();
|
|
d.setMonth(d.getMonth() +
|
|
(unit === "quarter" ? 3 : 1));
|
|
var end = d.getTime();
|
|
d.setTime((v + carry * timeUnitSize.hour + (end - start) * tickSize));
|
|
carry = d.getHours();
|
|
d.setHours(0);
|
|
} else {
|
|
d.setMonth(d.getMonth() +
|
|
tickSize * (unit === "quarter" ? 3 : 1));
|
|
}
|
|
} else if (unit === "year") {
|
|
d.setFullYear(d.getFullYear() + tickSize);
|
|
} else {
|
|
if (opts.timeBase === 'seconds') {
|
|
d.setTime((v + step) * 1000);
|
|
} else if (opts.timeBase === 'microseconds') {
|
|
d.setTime((v + step) / 1000);
|
|
} else {
|
|
d.setTime(v + step);
|
|
}
|
|
}
|
|
} while (v < axis.max && v !== prev);
|
|
|
|
return ticks;
|
|
};
|
|
|
|
function init(plot) {
|
|
plot.hooks.processOptions.push(function (plot) {
|
|
$.each(plot.getAxes(), function(axisName, axis) {
|
|
var opts = axis.options;
|
|
if (opts.mode === "time") {
|
|
axis.tickGenerator = dateTickGenerator;
|
|
|
|
// if a tick formatter is already provided do not overwrite it
|
|
if ('tickFormatter' in opts && typeof opts.tickFormatter === 'function') return;
|
|
|
|
axis.tickFormatter = function (v, axis) {
|
|
var d = dateGenerator(v, axis.options);
|
|
|
|
// first check global format
|
|
if (opts.timeformat != null) {
|
|
return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
|
|
}
|
|
|
|
// possibly use quarters if quarters are mentioned in
|
|
// any of these places
|
|
var useQuarters = (axis.options.tickSize &&
|
|
axis.options.tickSize[1] === "quarter") ||
|
|
(axis.options.minTickSize &&
|
|
axis.options.minTickSize[1] === "quarter");
|
|
|
|
var timeUnitSize;
|
|
if (opts.timeBase === 'seconds') {
|
|
timeUnitSize = timeUnitSizeSeconds;
|
|
} else if (opts.timeBase === 'microseconds') {
|
|
timeUnitSize = timeUnitSizeMicroseconds;
|
|
} else {
|
|
timeUnitSize = timeUnitSizeMilliseconds;
|
|
}
|
|
|
|
var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
|
|
var span = axis.max - axis.min;
|
|
var suffix = (opts.twelveHourClock) ? " %p" : "";
|
|
var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
|
|
var factor;
|
|
var fmt;
|
|
|
|
if (opts.timeBase === 'seconds') {
|
|
factor = 1;
|
|
} else if (opts.timeBase === 'microseconds') {
|
|
factor = 1000000
|
|
} else {
|
|
factor = 1000;
|
|
}
|
|
|
|
if (t < timeUnitSize.second) {
|
|
var decimals = -Math.floor(Math.log10(t / factor))
|
|
|
|
// the two-and-halves require an additional decimal
|
|
if (String(t).indexOf('25') > -1) {
|
|
decimals++;
|
|
}
|
|
|
|
fmt = "%S.%" + decimals + "s";
|
|
} else
|
|
if (t < timeUnitSize.minute) {
|
|
fmt = hourCode + ":%M:%S" + suffix;
|
|
} else if (t < timeUnitSize.day) {
|
|
if (span < 2 * timeUnitSize.day) {
|
|
fmt = hourCode + ":%M" + suffix;
|
|
} else {
|
|
fmt = "%b %d " + hourCode + ":%M" + suffix;
|
|
}
|
|
} else if (t < timeUnitSize.month) {
|
|
fmt = "%b %d";
|
|
} else if ((useQuarters && t < timeUnitSize.quarter) ||
|
|
(!useQuarters && t < timeUnitSize.year)) {
|
|
if (span < timeUnitSize.year) {
|
|
fmt = "%b";
|
|
} else {
|
|
fmt = "%b %Y";
|
|
}
|
|
} else if (useQuarters && t < timeUnitSize.year) {
|
|
if (span < timeUnitSize.year) {
|
|
fmt = "Q%q";
|
|
} else {
|
|
fmt = "Q%q %Y";
|
|
}
|
|
} else {
|
|
fmt = "%Y";
|
|
}
|
|
|
|
var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
|
|
|
|
return rt;
|
|
};
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
$.plot.plugins.push({
|
|
init: init,
|
|
options: options,
|
|
name: 'time',
|
|
version: '1.0'
|
|
});
|
|
|
|
// Time-axis support used to be in Flot core, which exposed the
|
|
// formatDate function on the plot object. Various plugins depend
|
|
// on the function, so we need to re-expose it here.
|
|
|
|
$.plot.formatDate = formatDate;
|
|
$.plot.dateGenerator = dateGenerator;
|
|
$.plot.dateTickGenerator = dateTickGenerator;
|
|
$.plot.makeUtcWrapper = makeUtcWrapper;
|
|
})(jQuery);
|
|
|