v1.1.2.34 CLEAN: add explanations about Julian day in PEdaily_Oudin doc

DESCRIPTION

 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.1.2.3
+Version: 1.1.2.34
 Date: 2019-01-29
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),

NEWS.rmd

@@ -13,7 +13,7 @@ output:
 
 
 
-### 1.1.2.33 Release Notes (2019-01-29) 
+### 1.1.2.34 Release Notes (2019-01-29) 
 
 
 

man/PEdaily_Oudin.Rd

@@ -14,7 +14,7 @@ PEdaily_Oudin(JD, Temp, LatRad, Lat, LatUnit)
 
 
 \arguments{
-\item{JD}{[numeric] time series of julian day [-]}
+\item{JD}{[numeric] time series of Julian day of the year [-]; see details below}
 
 \item{Temp}{[numeric] time series of daily mean air temperature [°C]}
 
@@ -35,11 +35,15 @@ PEdaily_Oudin(JD, Temp, LatRad, Lat, LatUnit)
 Function which computes daily PE using the formula from Oudin et al. (2005).
 }
 
+\details{
+In the \code{JD} argument, the Julian day of the year of the 1st of January is equal to 1 and the 31st of December to 365 (366 in leap years)). If the Julian day of the year is computed on an object of the \code{POSIXlt} class, the user has to add 1 to the returned value (e.g. \code{as.POSIXlt(\"2016-12-31\")$yday + 1}).
+}
 
 \examples{
 library(airGR)
 data(L0123001)
-PotEvap <- PEdaily_Oudin(JD = as.POSIXlt(BasinObs$DatesR)$yday, Temp = BasinObs$T,
+PotEvap <- PEdaily_Oudin(JD = as.POSIXlt(BasinObs$DatesR)$yday + 1,
+                         Temp = BasinObs$T,
                          Lat = 0.8, LatUnit = "rad")
 }