cercospoRa (version 0.0.1)

read_sb_growth_parameter: Read LAI images at several time points

Description

Read LAI images at several time points

Usage

read_sb_growth_parameter(img_files, img_dates, target_res)

Value

SpatRast with a layer for each input layer. Each layer contains is named according to the img_dates. The output SpatRast is suitable for input in calc_r_x0()

Arguments

img_files

character vector providing the file paths of at least two georeferenced images for the study location. Dates of image capture need to be defined in img_dates respectively.

img_dates

POSIXct vector of dates corresponding to the images supplied in img_files respectively. To prevent timezone issues use UTC timezone tz = "UTC".

target_res

desired spatial resolution. target_res should be equal to or larger than the actual resolution of the images expressed in meters.

Examples

epidemic_onset_param <-
  read_sb_growth_parameter(img_files = list.files(system.file("extdata", "uav_img",
                                                              package = "cercospoRa"),
                                                 pattern = ".tif",
                                                 full.names = TRUE),
                           img_dates = as.POSIXct(c("2022-06-14",
                                                    "2022-06-28"),
                                                  tz = "UTC"),
                           target_res = 10)