(octave.info)Stem Series

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15.4.6.10 Stem Series
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Stem series objects are created by the ‘stem’ or ‘stem3’ functions.
Each ‘hggroup’ element contains a single line object as a child
representing the stems.  The properties of the stem series are

‘showbaseline’
‘baseline’
‘basevalue’
     The property ‘showbaseline’ flags whether the baseline of the stem
     series is displayed (default is "on").  The handle of the graphics
     object representing the baseline is given by the ‘baseline’
     property and the y-value (or z-value for ‘stem3’) of the baseline
     by the ‘basevalue’ property.

     Changes to any of these property are propagated to the other
     members of the stem series and to the baseline itself.  Equally
     changes in the properties of the base line itself are propagated to
     the members of the corresponding stem series.

‘color’
     The RGB color or color name of the line objects of the stems.
     Note: Colors.

‘linewidth’
‘linestyle’
     The line width and style of the line objects of the stems.  Note:
     Line Styles.

‘marker’
‘markeredgecolor’
‘markerfacecolor’
‘markersize’
     The line and fill color of the markers on the stems.  Note:
     Colors.

‘xdata’
‘ydata’
‘zdata’
     The original x, y and z data of the stems.

‘xdatasource’
‘ydatasource’
‘zdatasource’
     Data source variables.