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Eric, You will have to post-process your data onto an unstaggered grid. Here is a video on how to do the trajectory analysis: https://www.youtube.com/watch?v=5svh5Mkv474&index=6&list=PLQut5OXpV-0gqVk8LFD6Riv6X3QcAVw_U Best, Unidata IDV Support > Good day, > > I am interested in undertaking a trajectory analysis with idealized > simulations of tropical cyclones using the WRF model. As I am using a > cartesian coordinate system (map_proj=0) using RIP4 or HYSPLIT is not a > possibility. Would IDV be a viable alternative? > > much thanks, > Eric > > Ticket Details =================== Ticket ID: EFF-665235 Department: Support IDV Priority: Normal Status: Closed