adds dims

docs/src/UserGuide/group.md

@@ -4,6 +4,7 @@ The following examples will use the `groupby` function to calculate temporal and
 
 ````@example compareXarray
 using YAXArrays, DimensionalData
+using YAXArrays: YAXArrays as YAX
 using NetCDF
 using Downloads
 using Dates
@@ -52,11 +53,11 @@ function weighted_seasons(ds)
     # calculate weights 
     tempo = dims(ds, :time)
     month_length = YAXArray((tempo,), daysinmonth.(tempo))
-    g_tempo = groupby(month_length, Dim{:time} => seasons(; start=December))
+    g_tempo = groupby(month_length, YAX.time => seasons(; start=December))
     sum_days = sum.(g_tempo, dims=:time)
     weights = map(./, g_tempo, sum_days)
     # unweighted seasons
-    g_ds = groupby(ds, Dim{:time} => seasons(; start=December))
+    g_ds = groupby(ds, YAX.time => seasons(; start=December))
     mean_g = mean.(g_ds, dims=:time)
     mean_g = dropdims.(mean_g, dims=:time)
     # weighted seasons
@@ -74,7 +75,7 @@ end
 Now, we continue with the `groupby` operations as usual
 
 ````@ansi compareXarray
-g_ds = groupby(ds, Dim{:time} => seasons(; start=December))
+g_ds = groupby(ds, YAX.time => seasons(; start=December))
 ````
 
 And the mean per season is calculated as follows
@@ -113,7 +114,7 @@ month_length = YAXArray((tempo,), daysinmonth.(tempo))
 Now group it by season 
 
 ````@ansi compareXarray  
-g_tempo = groupby(month_length, Dim{:time} => seasons(; start=December))
+g_tempo = groupby(month_length, YAX.time => seasons(; start=December))
 ````
 
 Get the number of days per season

src/YAXArrays.jl

@@ -33,7 +33,7 @@ recalculate() = YAXDefaults.recal[]
 YAXdir() = YAXDefaults.workdir[]
 export YAXdir
 include("helpers.jl")
-
+include("dims.jl")
 include("YAXTools.jl")
 include("Cubes/Cubes.jl")
 include("DatasetAPI/Datasets.jl")

src/dims.jl

@@ -0,0 +1,28 @@
+using DimensionalData: @dim, YDim, XDim, ZDim, TimeDim
+export Lat, lat, latitude, Latitude
+export rlat, lat_c
+export Lon, lon, longitude, long, Longitude
+export rlon, lon_c
+export height, depth
+
+@dim Lat YDim "Latitude"
+@dim lat YDim "Latitude"
+@dim latitude YDim "Latitude"
+@dim Latitude YDim "Latitude"
+@dim rlat YDim
+@dim lat_c YDim
+
+@dim Lon XDim "Longitude"
+@dim lon XDim "Longitude"
+@dim long XDim "Longitude"
+@dim longitude XDim "Longitude"
+@dim Longitude XDim "Longitude"
+@dim rlon XDim
+@dim lon_c XDim
+
+@dim height ZDim
+@dim depth ZDim
+
+@dim time TimeDim "time"
+@dim Time TimeDim "time"
+