Unfortunately, makePTDF() does not currently have an option to compute individual rows, columns or elements of the PTDF matrix. It may be fairly straightforward to modify the code yourself, at least to return single rows.
-- Ray Zimmerman Senior Research Associate B30 Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Jun 18, 2013, at 2:13 PM, xiwen <xiw...@yahoo.com> wrote: > hi > I have a question on making the PTDF matrix > suppose I have a large network, it's so slow to get the full matrix for all > branch X bus. is it possible to select buses and branches for the PTDF? > thanks > xiwen >
