Update many features

- Support the 6-parameter double-logistic function
- Support threshold-based phenometrics extraction method, which gives us 7 phenometrics including Greenup, MidGreenup, Maturity, Peak, Senescence, MidGreendown, and Dormancy.
- Fix bugs.
- Need to update the vignette.

.gitignore

@@ -4,3 +4,4 @@
 inst/doc
 /doc/
 /Meta/
+zzz*

DESCRIPTION

@@ -13,7 +13,7 @@ License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: true
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 Imports:
     coda,
     data.table,

NAMESPACE

@@ -1,6 +1,7 @@
 # Generated by roxygen2: do not edit by hand
 
 export("%>%")
+export(BLSPFitted)
 export(FitAvgModel)
 export(FitBLSP)
 export(FitBLSP_spring)

R/base.R

@@ -7,83 +7,4 @@
 
 usethis::use_pipe(export = TRUE)
 
-# The double-logistic function equation
-model_str <- "m1 + (m2 - m7 * t) * ((1 / (1 + exp((m3 - t) / m4))) -
-            (1 / (1 + exp((m5 - t) / m6))))"
 
-
-#' Make a standard color transparent.
-#' This function is borrowed from 'yarrr' package, but I changed the trans.val
-#' to use alpha value directly.
-#' @param orig.col: the original color, can be a color name, a hexadecimal code,
-#' or a rgb vector.
-#' @param alpha: define the transparent level.
-#' @param maxColorValue: used to convert the color to rgb format before making
-#' it transparent.
-#' @return color code.
-#' 
-#' @noRd
-Transparent <- function(orig.col, alpha = 1, maxColorValue = 255) {
-    n.cols <- length(orig.col)
-    orig.col <- grDevices::col2rgb(orig.col)
-    final.col <- rep(NA, n.cols)
-    for (i in 1:n.cols) {
-        final.col[i] <- grDevices::rgb(
-            orig.col[1, i], orig.col[2, i], orig.col[3, i],
-            alpha = alpha[i] * 255,
-            maxColorValue = maxColorValue
-        )
-    }
-    return(final.col)
-}
-
-
-#' Format input date and VI vectors to the structure needed for fitting averaged
-#' phenology models such as Fisher et al 2006, Elmore et al 2012.
-#' 
-#' @param date_vec the date vector, be sure to convert the vector to "Date"
-#' format or use "yyyy-mm-dd" format string.
-#' @param vi_vec The vegetation index vector.
-#' @return A list that contains formated data.
-#' @import data.table
-#' 
-#' @noRd
-FormatAvgData <- function(date_vec, vi_vec) {
-    # Check if date_vec is in Date format
-    if (sum(!is.na(lubridate::parse_date_time(date_vec, orders = "ymd"))) !=
-        length(date_vec)) {
-        stop("There're invalid Date values in the `date_vec`!
-            Be sure to use `yyyy-mm-dd` format.")
-    }
-
-    # Make it a data table
-    vi_dt <- data.table::data.table(
-        date = as.Date(date_vec), 
-        evi2 = vi_vec,
-        avg_date = ""
-    )
-    vi_dt[, avg_date := as.Date(paste0("1970", substr(vi_dt$date, 5, 10)))]
-    vi_dt <- stats::na.omit(vi_dt)
-    data.table::setorder(vi_dt, date)
-
-    # Find unique dates in the averaged year
-    unique_dates <- unique(vi_dt$avg_date)
-
-    # Deal with multiple observations on the same date in the averaged year.
-    # When that happens, we choose the one whose EVI2 value is the highest.
-    merge_dt <- sapply(unique_dates, function(x) {
-        # find how many records this day has
-        evi2 <- NA
-        find_idx <- which(x == vi_dt$avg_date)
-        if (length(find_idx) == 1) {
-            evi2 <- vi_dt[find_idx]$evi2
-        } else if (length(find_idx) > 1) { # we have multiple values for this date
-            # compute the max
-            evi2 <- max(vi_dt[avg_date == x]$evi2, na.rm = TRUE)
-        }
-        return(list(date = x, evi2 = evi2))
-    })
-    merge_dt <- data.table::as.data.table(t(merge_dt))
-
-    return(merge_dt)
-}

R/dat_dl_point_ts.R

@@ -131,12 +131,7 @@ GetEvi2PointTs <- function(pt_coords, focalDates = "1984-01-01/2022-12-31",
             ncores
         )
         cl <- parallel::makeCluster(ncores)
-        calls <- parallel::clusterCall(cl, function() {
-            suppressWarnings({
-                require(terra)
-                require(magrittr)
-            })
-        })
+        calls <- parallel::clusterCall(cl, function() {})
         parallel::clusterExport(cl,
             c("CalEVI2", "pt_coords"),
             envir = environment()