under the two conditions of "Simulated" and "Measured" (See the image),
I want to calculate some error metrics such as Nash-Sutcliffe efficiency (NSE) or root mean square error (RMSE), but I don't know how to code the command. There are 728 simulated values, while measured values only 30. Could anyone help me, please? Thank you!
library(readxl)
library(hydroGOF)
library(zoo)
X0_40cm <- read_excel("C:/Rstudy/For_10-40cm.xlsx")
data(X0_40cm)