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index 1c3669d..c01e736 100644
--- a/content/posts/2024-data-webapps-with-streamlit/index.md
+++ b/content/posts/2024-data-webapps-with-streamlit/index.md
@@ -1,7 +1,6 @@
 +++
 title = "Quick and easy data web apps in Python with Streamlit"
-date = "2024-04-08"
-draft = true
+date = "2024-04-06"
 
 [extra]
 comment = true
@@ -10,6 +9,9 @@ comment = true
 tags=["python"]
 +++
 
+![bike counter on sykkelstamvegen stavanger](bike-counter-sykkelstamvegen.jpg)
+> Bike counter along sykkelstamvegen in Stavanger. Photo by me!
+
 I pretty recently switched jobs (from one IT consultancy to another).
 This also meant switching client project, and subsequently I would be working with another tech stack than what I had been using the last few years.
 I was going from microservices in csharp/.NET to "data apps" with Python, Pandas and Streamlit.
@@ -21,7 +23,10 @@ If you want a deeper understanding, check out the official [streamlit.io/get-sta
 
 ### Setup / installation
 
-0. Create and navigate to a new project directory
+> Note that I'm on a Fedora Linux computer using the bash shell.
+> A few adjustments might be needed to follow along from Windows or Mac OS..
+
+0. Create and navigate to a new empty project directory
 
 1. Create and activate a new Python virtual environment within the project directory
 
@@ -30,15 +35,14 @@ If you want a deeper understanding, check out the official [streamlit.io/get-sta
    . .venv/bin/activate
    ```
 
-   > Note:
-   > If you're using Linux and want to use another version of python than what `python` is installed/configured to be,
+   > Note: If you're using Linux and want to use another version of python than what `python` is installed/configured to be,
    > I have [some notes](https://notes.christianfosli.com/python.html#managing-multiple-python-versions-and-dependencies)
 
 2. Install dependencies with pip
 
 ```bash
 echo <<EOF > requirements.txt
-streamlit~=1.32
+streamlit~=1.33
 pandas~=2.2
 numpy~=1.26
 EOF
@@ -71,6 +75,68 @@ Now we're ready to explore some more features 😄.
 
 ### Dataframes
 
+Dataframes are the primary data structure in the pandas library.
+It is commonly used to store tabular data, i.e. data which consists of rows and columns, like spreadsheets do.
+
+Streamlit makes it very simple visualize dataframes.
+
+After some googling for a sort-of interesting dataset to play with, I found out Stavanger kommune publishes
+[data from bike counter sensors publically](https://opencom.no/dataset/sykkeldata),
+and the most recent dataset (as of April 2024) is available as [a CSV file here](
+https://opencom.no/dataset/90cef5d5-601e-4412-87e4-3e9e8dc59245/resource/4c71d19a-adc4-42e0-9bed-c990316479be/download/sykkeldata.csv).
+
+Let's update application.py to demonstrate parsing this CSV to a dataframe and visualizing the results as a table:
+
+```python
+import pandas as pd
+import streamlit as st
+
+BIKE_COUNT_DATA_URL: str = (
+    "https://opencom.no/dataset/90cef5d5-601e-4412-87e4-3e9e8dc59245/resource/4c71d19a-adc4-42e0-9bed-c990316479be/download/sykkeldata.csv"
+)
+
+
+@st.cache_data(ttl=3600)
+def load_count_data() -> pd.DataFrame:
+    df = pd.read_csv(BIKE_COUNT_DATA_URL)
+    return df
+
+
+st.title("Streamlit demo")
+
+df = load_count_data()
+st.dataframe(df)
+```
+
+And that's it!
+Go back to your web browser and hit the "Rerun" button in the top right and notice we now have a fully interactive table of the dataset to play with!
+
+![streamlit app with dataframe](dataframe_demo.png)
+
 ### Plots
 
+For a quick plotting demo, let's visualize bike counts (across all counter locations) by date.
+We'll add a line to application.py:
+
+```patch
+@@ -16,3 +16,4 @@ st.title("Streamlit demo")
+
+ df = load_count_data()
+ st.dataframe(df)
++st.bar_chart(df, x="Date", y="Count")
+```
+
+And here we go:
+
+![streamlit app with bar chart](bar_chart_demo.png)
+
+Streamlit supports several different native chart types, as well as rendering charts from popular libraries from the ecosystem, such as matplotlib and plotly,
+so there are lots of options and possibilities!
+
+We could also use pandas to transform our dataframe in different ways prior to plotting the data, as needed.
+
 ### More
+
+This was just the tip of the iceberg with regards to data apps on Streamlit.
+Hopefully it was useful and/or inspires you to try it out and learn more 😄.
+