IMSL C# Programmers Guide
|
2D Drawing Elements >> Marker Attributes |
Marker Attributes
Markers are drawn when a Data
node is rendered with its DataType
attribute having
its DATA_TYPE_MARKER
bit set. Drawing of markers is affected by the
attributes described in this section. Note that even though some markers are drawn
using lines, the line attributes do not apply to markers.
An alternative to markers are images, which can be used to draw arbitrary symbols instead of markers.
Attribute MarkerType
MarkerType
is an integer-valued attribute that determines which marker will be
drawn. There are constants defined in ChartNode
for the marker types. The
default value is MARKER_TYPE_PLUS
. The following are all of the defined marker
types. For clarity, these are drawn larger than normal.
Attribute MarkerColor
MarkerColor
is a Color-valued attribute that determines the color of the marker.
Its default value is Color.Black
.
Attribute MarkerSize
MarkerSize
is a double-valued attribute that determines the size of the marker. Its
default value is 1.0. The actual size of the drawn marker, in pixels, is
0.007*MarkerSize*width, where width is the width of the Component containing
the chart.
Attribute MarkerThickness
MarkerThickness
is a double-valued attribute that determines the thickness of
the lines used to draw the marker. Its default value is 1.0.
Attribute MarkerDashPattern
MarkerDashPattern
is a double-array-valued attribute that determines the line
pattern used to draw the marker. It defaults to a solid line. Alternate entries in the
array represent the lengths of the opaque and transparent segments of the dashes.
Some dash patterns are defined. They are DASH_PATTERN_DOT
,
DASH_PATTERN_DASH
and DASH_PATTERN_DASH_DOT
.
Samples
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