harpTobac

harpTobac is a an interface to the Python package, tobac, for tracking and object based analysis of clouds.

It currently enables you to pass harp_grid_df data frames to do a basic analysis and tracking of 2d fields. That is, feature detection in 2d, segmentation in 2d and 2d linking of features into tracks.

Currently no specific functions for visualisation have been written, but the outputs are basic data frames and harp_grid_df data frames that can be easily visualised using ggplot2 and harpVis geoms.

Installation

You can install harpTobac from Github like so:

if (!requireNamespace("remotes")) {
  install.packages("remotes")
}
remotes::install_github("harphub/harpTobac")

Once you have installed harpTobac you will need to install the tobac Python package. This is done using the install_tobac() function. The necessary packages will be installed into a virtualenv called “harp-py”. This is where all Python packages that can be used by harp are installed and run from. If you already have a “harp-py” virtualenv you will be asked if you want to remove it prior to installation. Typically you will answer no to this, otherwise all of your harp Python packages will be removed.

library(harpTobac)
install_tobac()

You will only need to do the above once, straight after installing harpTobac. Subsequently, when the harpTobac package is attached your session will use the “harp-py” virtualenv.