#' @name LRE-plotpredict-Internal
#'
#' @title Internal function used to plot predictions in the
#' \code{plot.PredictLoad} function.
#'
#' @description Function that calculates confidence intervals
#'
#' @param x x
#' @param Conc Concentration
#' @param scale scale
#'
#' @import "ggplot2"
#' @import "gridExtra"
NULL
LoadPlot <-
function(x, Conc, scale = "Mt"){
# Annual Loads
pF1 <- ggplot(aes_string('Date', 'flow'), data = x) + geom_bar(stat = "identity") + coord_flip()
pF2 <- pF1 + ylab("Total Flow (ML)") + theme(axis.text.y = element_blank(), axis.title.y = element_blank(),
axis.ticks.y = element_blank())
if(scale == "Mt"){
pC1 <- ggplot(aes_string('y', 'Date'), data = x) + geom_point() +
geom_errorbarh(aes_string(xmin = 'CI.low', xmax = 'CI.high'), size = 1) +
ylab("") + xlab(paste(Conc, "(Mt)", sep = ""))
pL1 <- marrangeGrob(list(pC1, pF2), nrow = 1, ncol = 2, widths = c(3,1), top = "Load Estimates (Mt)")
}
else if(scale == "t"){
x$yt <- x$y*1000000
x$CI.lowt <- x$CI.low*1000000
x$CI.hight <- x$CI.high*1000000
pC1 <- ggplot(aes_string('yt', 'Date'), data = x) + geom_point() +
geom_errorbarh(aes_string(xmin = 'CI.lowt', xmax = 'CI.hight'), size = 1) +
ylab("") + xlab(paste(Conc, "(t)", sep = ""))
pL1 <- marrangeGrob(list(pC1, pF2), nrow = 1, ncol = 2, widths = c(3,1), top = "Load Estimates (t)")
}
else
stop("Scale can be either Mt or t. \n")
# Flow weighted concentrations
pFWC1 <- ggplot(aes_string('Date', 'AvgConc'), data = x) + geom_point() +
geom_errorbar(aes_string(ymin = 'AvgConcCI.low', ymax = 'AvgConcCI.high'), size = 1, width = 0.4) +
theme(axis.text.x = element_text(angle = 45, hjust = 1)) + xlab("WY") +
ylab("Flow weighted concentrations (mg/L)") + ggtitle(Conc)
list(pL1 = pL1, pFWC1 = pFWC1)
}
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