About TrajAtlas# Introduction Introduction to TrajAtlas What is TrajAtlas How TrajAtlas can help us understand differentiation What’s TrajAtlas different than other algorithm Basic thoughts behind TrajAtlas Differentiation Atlas What is Differentiation Atlas Why Differentiation Atlas is necessary? What is tree-based annotation system in TrajAtlas OPCST model What is OPCST Why we need a new model of osteoblast differentiation What is common peudotime in OPCST model How to interprete the merged trajectory TrajDiff What is TrajDiff Visualize large scale trajectories with Trajectory dotplot TRAVMap What is TRAV