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Breakpoint detection of Landsat pixel time series via BFAST-based algorithms, provided as a Shiny app

License: GNU General Public License v3.0

R 88.60% Python 9.54% CSS 1.86%

bfast gee shiny r python

bfast-explorer's Introduction

BFAST Explorer v0.0.3

Description

BFAST Explorer is a Shiny app, developed using R and Python, designed for the analysis of Landsat Surface Reflectance time series pixel data.

Three change detection algorithms - bfastmonitor, bfast01 and bfast - are used in order to investigate temporal changes in trend and seasonal components, via breakpoint detection.

If you encounter any bugs, please create an issue.

Usage

Currently, this tool only supports UNIX-like systems (no Windows OS) due to the integration between R and Python.

In order to successfully run this tool, apart from having R and Python installed, you need the following:

Request access to use GEE (https://earthengine.google.com/signup/)
Install and set up GEE Python API (https://developers.google.com/earth-engine/python_install)

Citation

To cite BFAST Explorer in publications, please use

Alexandre Almeida, Nathalia Menini, Jan Verbesselt, Ricardo Torres (2018). BFAST Explorer: An Effective Tool for Time Series Analysis. In: 2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). 22-27 July 2018. Valencia, Spain. DOI: 10.1109/IGARSS.2018.8517877.

or, alternatively, the corresponding BibTeX entry

@inproceedings{,
   author = {Alexandre Almeida and Nathalia Menini and Jan Verbesselt and Ricardo Torres},
   title = {BFAST Explorer: An Effective Tool for Time Series Analysis},
   booktitle = {2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)},
   location = {Valencia, Spain},
   eventdate = {2018-07-22/2018-07-27},
   doi = {10.1109/IGARSS.2018.8517877}
}

bfast-explorer's People

Contributors

Stargazers

Watchers

Forkers

cdanielw jonas-eberle mlateb gmoncrieff nathmenini drroad elias2014 yangxhcaf magdziarek dawa406 sepal-contrib carlitosh phuntshophuntsho 12rambau rahulchhabra177 dondealban

bfast-explorer's Issues

Revision and cleanup of package dependencies

As I remember while developing bfast-explorer, some packages were used just for one or two specific functions. I think it is important to check if these functions are really necessary, while also doing a clean-up of the code.

Check for packages that are not used at all and remove them
Ditch packages whose functions can be replaced by required packages' function and/or base functions
Add the package's names to functions calls (i.e. <package_name>::). IMO this helps tracking which packages are being used and which are not

Disconnected from Server when uploading a Shapefile

Using BFAST Explorer on Sepal, I attempted to upload a zip file containing a shape file of a polygon. Upon uploading, I receive an error saying "disconnected from server".

Switch bfast version from GitHub to CRAN

bfast was the only dependency installed from GitHub. It sounds more reasonable to use the latest (stable) version from CRAN, 1.5.7, instead of the development version from GitHub.

Tooltip disappears after updating input

Happening when calling bsTooltip(id = "select_index") on ui.R.

However, this issue is heavily dependent on an currently open issue from shinyBS.

As, for now, it's not fixable.

Configure Google API keys for ggmap package

ggmap calls are now raising this warning:

~~The same might also be true for ee calls from inside Python. This needs to be checked.~~

Switch from rPython to reticulate

rPython was archived on 2020-04-13. It is now necessary to replace it. reticulate seems like the way to go.

Plot functions are called more than once

Happens whenever input$satPlot suffers a change.

Probably related to the reactive functioning of Shiny.

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