First Viz

app.py

@@ -1,65 +1,21 @@
 import streamlit as st
+import pandas as pd
 import altair as alt
-from vega_datasets import data
- 
-st.title('Streamlit App for IS445: ID9518')
 
-st.text("The URL for this app is: https://huggingface.co/spaces/fallinginfall65/is445_demo")
+data = pd.read_csv('https://raw.githubusercontent.com/UIUC-iSchool-DataViz/is445_data/main/licenses_fall2022.csv')
 
-source = data.seattle_weather()
+st.title("Licenses Dataset Analysis")
+st.header("Vizualization 1: License Type")
 
-scale = alt.Scale(
-    domain=["sun", "fog", "drizzle", "rain", "snow"],
-    range=["#e7ba52", "#a7a7a7", "#aec7e8", "#1f77b4", "#9467bd"],
-)
-color = alt.Color("weather:N", scale=scale)
-
-# We create two selections:
-# - a brush that is active on the top panel
-# - a multi-click that is active on the bottom panel
-brush = alt.selection_interval(encodings=["x"])
-click = alt.selection_point(encodings=["color"])
-
-# Top panel is scatter plot of temperature vs time
-points = (
-    alt.Chart()
-    .mark_point()
-    .encode(
-        alt.X("monthdate(date):T", title="Date (Month Year)"),
-        alt.Y(
-            "temp_max:Q",
-            title="Maximum Daily Temperature (C)",
-            scale=alt.Scale(domain=[-5, 40]),
-        ),
-        color=alt.condition(brush, color, alt.value("lightgray")),
-        size=alt.Size("precipitation:Q", scale=alt.Scale(range=[5, 200])),
-    )
-    .properties(width=550, height=300)
-    .add_params(brush)
-    .transform_filter(click)
-)
-
-# Bottom panel is a bar chart of weather type
-bars = (
-    alt.Chart()
+viz1 = (
+    alt.Chart(data)
     .mark_bar()
     .encode(
-        x="count()",
-        y="weather:N",
-        color=alt.condition(click, color, alt.value("lightgray")),
-    )
-    .transform_filter(brush)
-    .properties(
-        width=550,
+        x = alt.X("count()Q", title="Number of Licenses"),
+        y = alt.Y("Licenses Type:N", sort='-x', title="License Type"),
+        color = alt.Color("License Type:N", legend=None)
     )
-    .add_params(click)
+    .properties(width=600, height=400)
 )
 
-chart = alt.vconcat(points, bars, data=source, title="Seattle Weather - 2019 to 2025")
-
-tab1, tab2 = st.tabs(["Streamlit theme (default)", "Altair native theme"])
-
-with tab1:
-    st.altair_chart(chart, theme="streamlit", use_container_width=True)
-with tab2:
-    st.altair_chart(chart, theme=None, use_container_width=True)
+st.altair_chart(viz1, use_container_width=True)