DAND6 JSDoc

Class: AppGraphStrategy

AppChart~ AppGraphStrategy

<abstract> new AppGraphStrategy(chart)

An abstract class to hold the specific algorighms to draw a chart.
These are different for point charts, line charts etc.
Supply the basic chart object as parameter.

Parameters:
Name Type Description
chart

the basic chart object this strategy belongs to
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Methods

<static> factory(chart, graphType)

Creates a new instance of a chart factory, the parameter graphType
specifies which subtype to create

Parameters:
Name Type Description
chart

the basic chart object this graph strategy belongs to
graphType

the type of graph; supported is: "line" or "scatter"
Source:

drawAnnotations(seriesesNode)

Draws the annotation saved with each data series
The method delegates back to the base charts drawAnnotation(...) function.

Parameters:
Name Type Description
seriesesNode

the DOM node where all the data serieses are attached
with their respective "annotation" property via d3's data(...) function.
Source:

drawMarkers(seriesesNode, accessor)

method for drawing a number of markers to the chart. A marker is a
highlight of a datapoint on the graph canvas with a label of coordinates.
The method delegates back to the base charts drawMarkers(...) function.

Parameters:
Name Type Description
seriesesNode

the DOM node where all the data serieses are attached
with their respective "marker" property via d3's data(...) function.
accessor

accessor function to apply to the marker values in order
to extract coordinate values to search for close datapoints with
AppGraphStrategy.prototype.getNearest(...).
Source:

<abstract> drawSerieses(seriesNode)

Draws all the serieses data points. Should be overriden by specific
AppGraphStrategy subclass but should be called from subclass, because
sets up some event listeners

Parameters:
Name Type Description
seriesNode

the DOM node where all the data serieses are attached
with their respective datapoints in the "values" property.
Source:

drawStickers(seriesesNode)

Draws the stickers saved with each data series
The method delegates back to the base charts drawStickers(...) function.

Parameters:
Name Type Description
seriesesNode

the DOM node where all the data serieses are attached
with their respective "stickers" property via d3's data(...) function.
Source:

getNearest(seriesValues, x, accessor)

from a series of values in the chart, gets the point which is closest
to some coordinate "x". how to access the coordinate in the series of
values supplied to the function is specified by an additional accessor
function that is applied to each value of the series.

Parameters:
Name Type Description
seriesValues

an array of values representing the series to analyze
x

the value to find the closest point to
accessor

the accessor function to apply to each seriesValue to get
the equivalent of "x"
Source: