setCenter: setCenter

In RCytoscape: Display and manipulate graphs in Cytoscape

Description

This method can be used to pan and scroll the Cytoscape canvas, which is adjusted (moved) so that the specified x and y coordinates are at the center of the visible window.

Usage

setCenter(obj, x, y)

Arguments

obj	a CytoscapeWindowClass object.
x	a numeric object.
y	a numeric object.

Value

None.

Author(s)

Paul Shannon

See Also

getCenter getZoom setZoom

Examples

  window.title = 'setCenter demo'
  cw <- new.CytoscapeWindow (window.title, graph=makeSimpleGraph())
  displayGraph (cw)
  redraw (cw)
  layoutNetwork(cw, 'jgraph-spring')
  original.center <- getCenter (cw)   # named list, "x" and "y".  initial values might be 140 and 90
    # now pan the display to the left, by setting the the visual center
    # to increasing values of x, without changing the location of the
    #  simple graph
  setCenter (cw, 200, 90)
  system ('sleep 1')
  setCenter (cw, 300, 90)
  system ('sleep 1')
  setCenter (cw, 400, 90)
  system ('sleep 1')
    # and now pan back to the original position
  setCenter (cw, 300, 90)
  system ('sleep 1')
  setCenter (cw, 200, 90)
  system ('sleep 1')
  setCenter (cw, original.center$x, original.center$y)

RCytoscape documentation built on Nov. 17, 2017, 10:52 a.m.