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TrajEx

TrajEx

Explore, analyze, and visualize trajectory data at scale. Filter millions of recorded movements by place and time, animate them slice by slice, and discover patterns via map visulization and data export.
The TrajEx application window: a dataset configuration panel on the left, a map in the center showing thousands of speed-colored trajectories over Brisbane, a layer tree and appearance controls on the right, and a table of trace-view rows below.
TrajEx main window

What is TrajEx?

Section titled “What is TrajEx?”

TrajEx (Trajectory Explorer) is a desktop program for analyzing and visualizing recorded trajectories of moving objects — GPS traces, vehicle trips, anything that is a sequence of positions over time. It is designed specifically for the dynamic side of spatio-temporal data, rather than for the static spatial layers of a general GIS or mapping tool, to support analyses of how movement changes over time.

It is written in C++ and runs entirely on the local machine. That is what makes large files workable: the data is never uploaded anywhere, and filtering and drawing happen at native speed rather than in a browser tab or a notebook. No coding is required.

Map Visualization and Animation

Visualize and animate millions of trajectories on a real map. Color, line thickness, and point markers are adjustable for individual or a group of trajectories.

Space and Time Filters

Filter trajectories by an area, a map selection, and time slice and compare patterns across filtered samples.

Save as Project

Loaded data, filters, and display settings are saved to a project file. Opening that file later restores the same setup, so an analysis can be picked up where it stopped.

Data Export

Data tables, plots, map captures, and animations can be exported as CSV, image, and video files.

Coming soon

Section titled “Coming soon”

TrajEx is in active development and has not been publicly released yet. This site is where it will land. Nothing below is available to download or read today.

Downloads

Installers for macOS and Windows. Coming soon.

User Guide

Tutorials and reference documentation for the app. Coming soon.

Sample Datasets

Samples from public trajectory datasets, ready to open in TrajEx. Coming soon.

Community

A public repository for issues, tutorials, and dataset converters. Coming soon.

About the project

Section titled “About the project”

TrajEx is developed and maintained by researchers (Project Lead: Jiwon Kim) in the Transport Engineering Group, within the School of Civil Engineering at the University of Queensland.