Only update the background info for matched node
PlotInmexPath(mSetObj=NA, path.id, width, height)
Input the name of the created mSetObj (see InitDataObjects)
Input the width, there are 2 default widths, the first, width = NULL, is 10.5. The second default is width = 0, where the width is 7.2. Otherwise users can input their own width.
Input the height of the image to create.
Input the ID of the pathway to plot.