setEdgeTargetArrowOpacityDirectR Documentation

setEdgeTargetArrowOpacityDirect

Description

In the specified CytoscapeWindow, set the opacity of the target arrow of the specified edge or edges. Opacity is an integer between 0 (invisible) and 255 (fully rendered).

Usage

setEdgeTargetArrowOpacityDirect(obj, edge.names, new.values)

Arguments

obj a CytoscapeWindowClass object.
edge.names one or more cy2-style edge names, String objects.
new.values one or more integer objects, between 0 and 255.

Value

None.

Author(s)

Paul Shannon

See Also

cy2.edge.names setEdgeTargetArrowOpacityDirect

Examples

  cw <- new.CytoscapeWindow ('setEdgeTargetArrowOpacityDirect.test', graph=makeSimpleGraph())
  displayGraph (cw)
  layoutNetwork (cw, 'jgraph-spring')
  redraw (cw)

  edges.of.interest = as.character (cy2.edge.names (cw@graph))

     # make sure the target arrows are visible
  setEdgeTargetArrowShapeDirect (cw, edges.of.interest, 'Circle')

    # first try passing three edges and three arrow opacity values
  setEdgeTargetArrowOpacityDirect (cw, edges.of.interest, c (64, 128, 255))
  redraw (cw)
  
    # now try passing three edges and one opacity value
  setEdgeTargetArrowOpacityDirect (cw, edges.of.interest, 32)
  redraw (cw)

    # now loop through all of the arrow.opacitys

  for (opacity in seq (0, 255, by=45)) {
    setEdgeTargetArrowOpacityDirect (cw, edges.of.interest, opacity)
    redraw (cw)
    }

    # restore the default
  setEdgeTargetArrowOpacityDirect (cw, edges.of.interest, 255)
  redraw (cw)