Rename stat_ecdf()'s computed variable to ecdf

Author: teunbrand

NEWS.md

@@ -1,5 +1,7 @@
 # ggplot2 (development version)
 
+* Renamed computed aesthetic in `stat_ecdf()` to `ecdf`, to prevent incorrect
+  scale transformations (@teunbrand, #5113 and #5112).
 * Fixed a regression in `geom_hex()` where aesthetics were replicated across 
   bins (@thomasp85, #5037 and #5044)
 * Fixed spurious warning when `weight` aesthetic was used in `stat_smooth()` 

R/stat-ecdf.r

@@ -22,7 +22,7 @@
 #'   and (Inf, 1)
 #' @section Computed variables:
 #' \describe{
-#'   \item{y}{cumulative density corresponding x}
+#'   \item{ecdf}{cumulative density corresponding x}
 #' }
 #' @export
 #' @examples
@@ -74,7 +74,7 @@ stat_ecdf <- function(mapping = NULL, data = NULL,
 StatEcdf <- ggproto("StatEcdf", Stat,
   required_aes = c("x|y"),
 
-  default_aes = aes(y = after_stat(y)),
+  default_aes = aes(x = after_stat(ecdf), y = after_stat(ecdf)),
 
   setup_params = function(self, data, params) {
     params$flipped_aes <- has_flipped_aes(data, params, main_is_orthogonal = FALSE, main_is_continuous = TRUE)
@@ -104,7 +104,7 @@ StatEcdf <- ggproto("StatEcdf", Stat,
 
     df_ecdf <- data_frame0(
       x = x,
-      y = data_ecdf,
+      ecdf = data_ecdf,
       .size = length(x)
     )
     df_ecdf$flipped_aes <- flipped_aes