Add sections on subset and select (#29)

.github/workflows/CI.yml

@@ -40,6 +40,9 @@ jobs:
                 using Books; Books.install_dependencies()'
 
       - run: julia --project -e 'using JDS; JDS.build()'
+        env:
+          # Fix for Plots with GR backend.
+          GKSwstype: nul
 
       - name: Deploy to secondary branch
         if: ${{ github.event_name != 'pull_request' }}

Project.toml

@@ -8,12 +8,15 @@ AlgebraOfGraphics = "cbdf2221-f076-402e-a563-3d30da359d67"
 Books = "939d5c6b-51ae-42e7-97ca-7564d0d4ad91"
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
+CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Downloads = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
+InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
 Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 StatsPlots = "f3b207a7-027a-5e70-b257-86293d7955fd"
 XLSX = "fdbf4ff8-1666-58a4-91e7-1b58723a45e0"
@@ -23,9 +26,10 @@ AlgebraOfGraphics = "0.4"
 Books = "0.7"
 CSV = "0.8"
 CairoMakie = "0.6"
+CategoricalArrays = "0.10"
 DataFrames = "1.1"
-Makie = "0.14"
-Plots = "1.15"
+Makie = "0.15"
+Plots = "1.19"
 Reexport = "1.1"
 StatsPlots = "0.14"
 XLSX = "0.7"

contents/dataframes.md

@@ -13,9 +13,10 @@ We could even ask the reader to answer the queries described below as exercises.
 
 ```jl
 tv_shows = DataFrame(
-    name=["Game of Thrones", "The Crown", "Friends", "..."],
-    country=["United States", "England", "United States", "..."],
-    rating=[8.2, 7.3, 7.8, "..."])
+        name=["Game of Thrones", "The Crown", "Friends", "..."],
+        country=["United States", "England", "United States", "..."],
+        rating=[8.2, 7.3, 7.8, "..."]
+    )
 Options(tv_shows; label="TV_shows")
 ```