Temporal GIS

for Drone Data

Brendan Harmon

lsu college of art and design logo

Temporal Framework for GIS

  • Database for time series of spatial data
  • Temporal datasets, processing, visualization, and conversion
  • Implemented in GRASS GIS

GRASS GIS Logo

Space Time Datasets

  • A collection of maps representing spatial data at different instances in time
  • Maps are assigned timestamps and registered in a database with temporal metadata
  • Support for vector, raster, 3D vector, & 3D raster maps

Temporal Processing

  • Gap filling
  • Aggregation
  • Accumulation
  • Algebra
  • Queries
  • Statistics
  • Animation
  • etc…

Case Study

Hilltop Arboretum Time Series

Hilltop Arboretum

Cajun Prairie Wildflower Meadow

Monthly Drone Surveys

Time Series Analysis

Spatiotemporal Data & Functions

  • Space time raster dataset
  • Temporal aggregation
  • Temporal algebra

Monthly Changes in Biomass

Point Cloud Visualization

xyz.cct.lsu.edu

Net Annual Biomass

References

  • Gebbert, S. & Pebesma, E. 2014. TGRASS: A temporal GIS for field based environmental modeling. Environmental Modelling & Software 53, 1-12
  • Gebbert, S. & Pebesma, E. 2017. The GRASS GIS temporal framework. International Journal of Geographical Information Science 31, 1273-1292
  • Gebbert, S., Leppelt, T., & Pebesma, E., 2019. A topology based spatio-temporal map algebra for big data analysis. Data 4, 86.

Tutorials