this.show = $.jqplot.config.enablePlugins

Wether or not to show the trend line.

this.color = '#666666'

CSS color spec for the trend line.  By default this wil be the same color as the primary line.

this.renderer = new $.jqplot.LineRenderer()

Renderer to use to draw the trend line.  The data series that is plotted may not be rendered as a line.  Therefore, we use our own line renderer here to draw a trend line.

this.rendererOptions = {marker:{show:false}}

Options to pass to the line renderer.  By default, markers are not shown on trend lines.

this.label = ''

Label for the trend line to use in the legend.

this.type = 'linear'

Either ‘exponential’, ‘exp’, or ‘linear’.

this.shadow = true

true or false, whether or not to show the shadow.

this.markerRenderer = {show:false}

Renderer to use to draw markers on the line.  I think this is wrong.

this.lineWidth = 1.5

Width of the trend line.

this.shadowAngle = 45

Angle of the shadow on the trend line.

this.shadowOffset = 1.0

pixel offset for each stroke of the shadow.

this.shadowAlpha = 0.07

Alpha transparency of the shadow.

this.shadowDepth = 3

number of strokes to make of the shadow.