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save Restore Node Positions
Kevin Murphy edited this page Jan 3, 2014
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1 revision
It is now possible to save and restore node positions using two new methods, getNodePositions() and setNodePositions():
adj = rand(10, 10) > 0.9;
g = graphViz4Matlab(adj);
X = g.getNodePositions();
X(1, :) = [0.5 0.5];
g.setNodePositions(X)
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Coordinates are normalized so that {{{0}}} is the bottom left hand corner, and {{{1}}} is the top right.
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X(i, 1) is the x-position of the ith node, and X(i, 2) is its y position.
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To move a single node, you can use g.moveNode(i, xpos, ypos);
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Coordinates specify a node's center. You must take into account its current diameter to avoid moving it off the visible screen. This code moves node 1 to the bottom left corner.
diameter = g.nodeArray(1).width radius = diameter/2; g.moveNode(1, radius, radius);