title: How can I use R to see the error metrics in HydroGOF？
body: <p>under the two conditions of "Simulated" and "Measured" (See the image),</p>
  
  <p><a href="https://i.stack.imgur.com/r9VYc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/r9VYc.png" alt="enter image description here"></a></p>
  
  <p>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 <strong>728</strong> simulated values, while measured values only <strong>30</strong>.
  Could anyone help me, please? Thank you!</p>
  
  <pre><code>library(readxl)
  library(hydroGOF)
  library(zoo)
  X0_40cm &lt;- read_excel("C:/Rstudy/For_10-40cm.xlsx")
  data(X0_40cm)
  </code></pre>