Class StackedGraph

Defined in: StackedGraph.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	StackedGraph(target) Basic StackedGraph class.

Method Summary
Method Attributes	Method Name and Description
	baselineAt(x)
	createCanvas() create a canvas inside the target html tag.
	draw() draw into canvas
	makeHighlighted(series) tag the given series as highlighted.
	maxSampleInRange(start, end) maximum sample value in summed-series domain
	samplePosInRange(start, end) returns a "set" of sample positions within the intervall [start, end].
	seriesBottomInStackedGraphDomain(seriesIndex, x) returns f(x) from the bottom of the series in the stacked graph domain
	seriesTopInStackedGraphDomain(seriesIndex, x) returns f(x) from the top of the series in the stacked graph domain
	sumAt(x)
	timeSeriesAt(x, y)
	toInsideOutOrderIndex(index)
	toOrderedSeriesIndex(index)
	updateCanvasSize() - update the canvas size to fit into the target element.

Class Detail

StackedGraph(target)

Basic StackedGraph class. Contains methods to create and draw stacked graphs from a set of time series. Can be extended to ThemeRivers and Streamgraphs by overriding the baselineAt() function. Domains
Different domain-spaces are used to locate data:

canvas domain pixel coordinates within canvas

normalized-canvas domain canvas domain between 0 and 1

stacked-graph domain domain of time series summed up including baseline offset

summed-series domain domain of time series summed up

series domain domain of one time series

Parameters:
target

Returns:

Method Detail

baselineAt(x)

Parameters:
x

createCanvas()

create a canvas inside the target html tag. the canvas is used to draw the graphs

draw()

draw into canvas

makeHighlighted(series)

tag the given series as highlighted.

Parameters:
series

maxSampleInRange(start, end)

maximum sample value in summed-series domain

Parameters:
start
end

samplePosInRange(start, end)

returns a "set" of sample positions within the intervall [start, end].

Parameters:
start
end

seriesBottomInStackedGraphDomain(seriesIndex, x)

returns f(x) from the bottom of the series in the stacked graph domain

Parameters:
seriesIndex
x

seriesTopInStackedGraphDomain(seriesIndex, x)

returns f(x) from the top of the series in the stacked graph domain

Parameters:
seriesIndex
x

sumAt(x)

Parameters:
x

Returns:: sum of all series at x in summed-series domain

timeSeriesAt(x, y)

Parameters:
x: in canvas space pixel coordinates
y: in canvas space pixel coordinates

Returns:: the time series at the specified position

toInsideOutOrderIndex(index)

Parameters:
index

toOrderedSeriesIndex(index)

Parameters:
index

updateCanvasSize()

- update the canvas size to fit into the target element.

Classes

Class StackedGraph