ImageNameToWaveRef
ImageNameToWaveRef (graphNameStr, imageNameStr)
The ImageNameToWaveRef function returns a wave reference to the 2D wave corresponding to the given image name in the graph window or subwindow named by graphNameStr.
Parameters
graphNameStr can be "" to refer to the top graph window.
When identifying a subwindow with graphNameStr, see Subwindow Syntax for details on forming the window hierarchy.
The image is identified by the string in imageNameStr, which could be a string determined using ImageNameList. Note that the same image name can refer to different waves in different graphs.