From f5a776c397b2746489218adc45483bdecbb71ca4 Mon Sep 17 00:00:00 2001
From: Mengqi Zhao <mengqiz@umd.edu>
Date: Tue, 9 Jan 2024 07:54:32 -0800
Subject: [PATCH] Update read_ncdf.R

---
 R/read_ncdf.R | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/R/read_ncdf.R b/R/read_ncdf.R
index 9732cf5..379354d 100644
--- a/R/read_ncdf.R
+++ b/R/read_ncdf.R
@@ -27,9 +27,6 @@ read_ncdf <- function(ncdf = NULL,
       ncdf_in <- ncdf4::nc_open(ncdf)
       var_names <- attributes(ncdf_in$var)$names
 
-      # get unit
-      var_unit <- ncdf4::ncatt_get(ncdf_in, var_names)$unit
-
       dims <- c(ncdf_in$var[[var]]$dim[[1]]$name,
                 ncdf_in$var[[var]]$dim[[2]]$name,
                 ncdf_in$var[[var]]$dim[[3]]$name)
@@ -39,6 +36,9 @@ read_ncdf <- function(ncdf = NULL,
         stop('Climate variable name is not valid. Please provide valid ncdf_var name.')
       }
 
+      # get unit
+      var_unit <- ncdf4::ncatt_get(ncdf_in, var)$unit
+
       # get the data time series
       ncdf_brick <- raster::brick(ncdf, varname = var, ncdf = TRUE,
                                   dims = dims_order, stopIfNotEqualSpaced = F)
@@ -120,9 +120,6 @@ read_ncdf <- function(ncdf = NULL,
       ncdf_in <- ncdf4::nc_open(ncdf)
       var_names <- attributes(ncdf_in$var)$names
 
-      # get unit
-      var_unit <- ncdf4::ncatt_get(ncdf_in, var_names)$unit
-
       dims <- c(ncdf_in$var[[var]]$dim[[1]]$name,
                 ncdf_in$var[[var]]$dim[[2]]$name,
                 ncdf_in$var[[var]]$dim[[3]]$name)
@@ -132,6 +129,9 @@ read_ncdf <- function(ncdf = NULL,
         stop('Climate variable name is not valid. Please provide valid ncdf_var name.')
       }
 
+      # get unit
+      var_unit <- ncdf4::ncatt_get(ncdf_in, var)$unit
+
       ncdf_brick <- raster::brick(ncdf, varname = var, ncdf = TRUE,
                                   dims = dims_order, stopIfNotEqualSpaced = F)