Class links.Graph.StepDate

Defined in: graph.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	links.Graph.StepDate(start, end, minimumStep)

Method Summary
Method Attributes	Method Name and Description
	addZeros(value, len) Add leading zeros to the given value to match the desired length.
	end() Check if the end date is reached
	getCurrent() Get the current datetime
	getLabelMajor(date) Returns formatted text for the major axislabel, depending on the current date and the scale.
	getLabelMinor(date) Returns formatted text for the minor axislabel, depending on the current date and the scale.
	isMajor() Check if the current step is a major step (for example when the step is DAY, a major step is each first day of the MONTH)
	next() Do the next step
	roundToMinor() Round the current date to the first minor date value This must be executed once when the current date is set to start Date
	setAutoScale(enable) Enable or disable autoscaling
	setMinimumStep(minimumStep) Automatically determine the scale that bests fits the provided minimum step
	setRange(start, end, minimumStep) Set a new range If minimumStep is provided, the step size is chosen as close as possible to the minimumStep but larger than minimumStep.
	setScale(newScale, newStep) Set a custom scale.
	snap(date) Snap a date to a rounded value.
	start() Set the step iterator to the start date.

Class Detail

links.Graph.StepDate(start, end, minimumStep)

Parameters:
{Date} start: The start date, for example new Date(2010, 9, 21) or new Date(2010, 9, 21, 23, 45, 00)
{Date} end: The end date
{Number} minimumStep: Optional. Minimum step size in milliseconds

Method Detail

{string} addZeros(value, len)

Add leading zeros to the given value to match the desired length. For example addZeros(123, 5) returns "00123"

Parameters:
{int} value: A value
{int} len: Desired final length

Returns:: {string} value with leading zeros

{boolean} end()

Check if the end date is reached

Returns:: {boolean} true if the current date has passed the end date

{Date} getCurrent()

Get the current datetime

Returns:: {Date} current The current date

getLabelMajor(date)

Returns formatted text for the major axislabel, depending on the current date and the scale. For example when scale is MINUTE, the major scale is hours, and the hour will be formatted as "hh".

Parameters:
{Date} date Optional: custom date. if not provided, current date is taken

getLabelMinor(date)

Returns formatted text for the minor axislabel, depending on the current date and the scale. For example when scale is MINUTE, the current time is formatted as "hh:mm".

Parameters:
{Date} date Optional: custom date. if not provided, current date is taken

{boolean} isMajor()

Check if the current step is a major step (for example when the step is DAY, a major step is each first day of the MONTH)

Returns:: {boolean} true if current date is major, else false.

next()

Do the next step

roundToMinor()

Round the current date to the first minor date value This must be executed once when the current date is set to start Date

setAutoScale(enable)

Enable or disable autoscaling

Parameters:
{boolean} enable: If true, autoascaling is set true

setMinimumStep(minimumStep)

Automatically determine the scale that bests fits the provided minimum step

Parameters:
{Number} minimumStep: The minimum step size in milliseconds

setRange(start, end, minimumStep)

Set a new range If minimumStep is provided, the step size is chosen as close as possible to the minimumStep but larger than minimumStep. If minimumStep is not provided, the scale is set to 1 DAY. The minimumStep should correspond with the onscreen size of about 6 characters

Parameters:
{Date} start: The start date and time.
{Date} end: The end date and time.
{int} minimumStep: Optional. Minimum step size in milliseconds

setScale(newScale, newStep)

Set a custom scale. Autoscaling will be disabled. For example setScale(SCALE.MINUTES, 5) will result in minor steps of 5 minutes, and major steps of an hour.

Parameters:
{links.Graph.StepDate.SCALE} newScale: A scale. Choose from SCALE.MILLISECOND, SCALE.SECOND, SCALE.MINUTE, SCALE.HOUR, SCALE.WEEKDAY, SCALE.DAY, SCALE.MONTH, SCALE.YEAR.
{Number} newStep: A step size, by default 1. Choose for example 1, 2, 5, or 10.

snap(date)

Snap a date to a rounded value. The snap intervals are dependent on the current scale and step.

Parameters:
{Date} date: the date to be snapped

start()

Set the step iterator to the start date.

Classes

Class links.Graph.StepDate