Create a vectorscope for Stereo Image like in Izotope Ozone - General JUCE discussion - JUCE
Izotope Ozone Imager - Free Stereo Imager Plugin For PC & Mac
Producer Life - iZotope Ozone 9 Mastering Suite is such a powerful bundle of audio tools. Like the Ozone Imager: Precisely adjust stereo width for your master using the Imager module. The