Merge pull request #14 from aeturrell/polars-letsplot-2e

letsplot and finished book

Author: aeturrell

_toc.yml

@@ -1,13 +1,13 @@
 # Table of contents
-# Learn more at https://jupyterbook.org/customize/toc.html
 
 format: jb-book
 root: welcome
 parts:
 - caption: Introduction
   chapters:
   - file: introduction
-- caption: Getting Started
+  - file: prerequisites
+- caption: Quick Start
   numbered: true
   chapters:
   - file: whole-game
@@ -23,26 +23,28 @@ parts:
 - caption: Visualise
   numbered: true
   chapters:
+  - file: visualise
+  - file: vis-layers
   - file: exploratory-data-analysis
   - file: communicate-plots
 - caption: Transform
   numbered: true
   chapters:
-  - file: joins
   - file: boolean-data
   - file: numbers
   - file: strings
   - file: regex
   - file: categorical-data
   - file: dates-and-times
   - file: missing-values
+  - file: joins
 - caption: Import
   numbered: true
   chapters:
   - file: spreadsheets
-  - file: webscraping-and-apis
-  - file: rectangling
   - file: databases
+  - file: rectangling
+  - file: webscraping-and-apis
 - caption: Programme
   numbered: true
   chapters:

categorical-data.ipynb

@@ -223,18 +223,17 @@
    "source": [
     "### Renaming Categories\n",
     "\n",
-    "Renaming categories is done by assigning new values to the `.cat.categories` property or by using the `rename_categories()` method (which works with a list or a dictionary)."
+    "Renaming categories is done via the `rename_categories()` method (which works with a list or a dictionary)."
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "aedcf10f",
+   "id": "097171b8",
    "metadata": {},
    "outputs": [],
    "source": [
-    "df[\"cat_type\"].cat.categories = [\"alpha\", \"beta\", \"gamma\"]\n",
-    "df"
+    "df[\"cat_type\"] = df[\"cat_type\"].cat.rename_categories([\"alpha\", \"beta\", \"gamma\"])"
    ]
   },
   {
@@ -380,7 +379,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.12"
+   "version": "3.10.12"
   },
   "toc-showtags": true
  },