sroi_analysis: Function for sROI analysis
In phenofun: Automated Processing of Webcam Images for Phenological Classification

Description Usage Arguments Value

This function allows to carry out an entire sROI analysis for given webcam data. Example code can be downloaded at http://bothmann.userweb.mwn.de/dissertation.html.

sroi_analysis(folder_results = paste0(getwd(), "/"),
  folder_data = paste0(getwd(), "/"),
  name_of_analysis = substr(as.character(Sys.time()), 1, 10),
  get_timeseries = TRUE, correlate_timeseries = TRUE,
  do_evaluation = TRUE, do_strucchange = TRUE, color = "green",
  main_camera = NULL, n_pinpricks = 1, seed = 12345,
  threshold_vec = 0.9, a_vec = seq(1, 150, by = 1), b_vec = seq(1, 100, by
  = 1), lists_files, which_images = seq_len(length(lists_files)), doy,
  doy_c = doy, which_images_background = 1, x = NULL, y = NULL)

`folder_results`	Folder where the results will be saved
`folder_data`	Folder where the data is saved
`name_of_analysis`	Name of the specific analysis for a unique folder
`get_timeseries`	If `TRUE` (default), greenness time series of pinpricks are extracted
`correlate_timeseries`	If `TRUE` (default), correlation images are computed
`do_evaluation`	If `TRUE` (default), correlation images and time series are saved
`do_strucchange`	If `TRUE` (default), optimality criteria are computed and best mask is saved
`color`	Name of color channel to be analyzed, typically `green` (default)
`main_camera`	Main for the output plots
`n_pinpricks`	Number of random pinpricks
`seed`	Seed for the random pinpricks
`threshold_vec`	Vector of thresholds for the correlation images
`a_vec`	Possible spring doys
`b_vec`	Possible autumn doys (counted backwards from 31.12.)
`lists_files`	Vector of file names of images
`which_images`	Vector of indices of images to be analyzed
`doy`	Vector of DOYs for each image
`doy_c`	Vector of DOYs for each image, continouing over a change of year of more than one year is analyzed, else `doy`
`which_images_background`	Index of background image
`x`	Vector of x-coordinates to read in. Default `NULL` results in a grid of all possible values.
`y`	Vector of y-coordinates to read in. Default `NULL` results in a grid of all possible values.

An entire sROI analysis is carried out in the automated version of multiple random pinpricks. All results are saved on the disc, the necessary folders are created.

phenofun documentation built on Jan. 22, 2017, 9:01 p.m.