1. A method for drilling into displayed heterogeneous measurement data, comprising: transforming collected heterogeneous scalar measurement data from heterogeneous network devices by using a mathematical transform to transform a heterogeneous scalar measurement data, from at least one of the network devices, into a homogeneous mathematical transform space so that the heterogeneous scalar measurement data is normalized; displaying the transformed heterogeneous scalar measurement data; and drilling into the displayed transformed heterogeneous scalar measurement data to display additional measurement data from which the displayed transformed heterogeneous scalar measurement data is based.