## org.autoplot.dom.AnnotationController

implements the annotation

## AnnotationController( org.autoplot.dom.Application dom, org.autoplot.dom.Annotation annotation, org.das2.graph.DasAnnotation dasAnnotation )

## getCanvas

getCanvas( ) → org.autoplot.dom.Canvas

return the canvas where this annotation lives.

### Returns:

an org.autoplot.dom.Canvas
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## getDasAnnotation

getDasAnnotation( ) → org.das2.graph.DasAnnotation

provide direct access to the annotation

### Returns:

the implementing das2 annotation
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## getFontConverter

getFontConverter( org.das2.graph.DasCanvasComponent dcc ) → Converter

converts forward from relative font spec to point size, used by the annotation and axis nodes.

### Parameters

dcc - the canvas component.

### Returns:

the converter that converts between strings like "1em" and the font.
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