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SPLITS (Spline Analysis of Time Series) is a software package to analyze time series of remotely sensed parameters such as vegetation indices.


SPLITS is available in Puhti with the following versions:

  • 1.11
  • 1.10


SPLITS is included in the splits module. The gcc module needs to be loaded also. You can load these with

module load gcc splits

By default the latest splits module is loaded. If you want a specific version you can specify the version number

module load gcc splits/<VERSION_NUMBER>


SPLITS is a command line tool. The following commands are available

  • peakcal - analyze the structure of bottoms and peaks in a phenological time series
  • phencal - calculate phenological parameters from a fitted spline model
  • prepro - preprocess MODIS data to be used with SPLITS
  • splcal - use a fitted spline model to interpolate data
  • splfit - fit a spline model to a time series image
  • splview - graphical user interface for spline model exploration

More detailed manual can be found from the following path


License and acknowledgement

SPLITS is licensed under the GNU GPL License)

Please acknowledge CSC and Geoportti in your publications, it is important for project continuation and funding reports. As an example, you can write "The authors wish to thank CSC - IT Center for Science, Finland (urn:nbn:fi:research-infras-2016072531) and the Open Geospatial Information Infrastructure for Research (Geoportti, urn:nbn:fi:research-infras-2016072513) for computational resources and support".


Last update: February 3, 2022