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app.py

@@ -0,0 +1,138 @@
+########################
+# app.py  –  Streamlit #
+########################
+import streamlit as st
+import pandas as pd
+import altair as alt
+from vega_datasets import data
+import us
+
+st.set_page_config(page_title="University Donor Dashboard",
+                   layout="wide")
+
+# ---------- DATA ----------
+@st.cache_data
+def load_data():
+    # Make sure the CSV is in the same folder as app.py
+    df = pd.read_csv("university-donations.csv")
+    df["Gift Date"] = pd.to_datetime(df["Gift Date"])
+    df["Year"] = df["Gift Date"].dt.year
+    df["YearMonth"] = df["Gift Date"].dt.to_period("M").astype(str)
+
+    # map 2-letter state → FIPS id for topojson join
+    state_id = {s.abbr: int(s.fips) for s in us.states.STATES}
+    df["state_fips"] = df["State"].map(state_id)
+    return df
+
+df = load_data()
+alt.data_transformers.enable("default", max_rows=None)
+
+# ---------- SIDEBAR FILTERS ----------
+st.sidebar.header("Filters")
+col_opts = ["All"] + sorted(df["College"].unique())
+mot_opts = ["All"] + sorted(df["Gift Allocation"].unique())
+
+col_pick = st.sidebar.selectbox("College", col_opts, index=0)
+mot_pick = st.sidebar.selectbox("Motivation (Gift Allocation)", mot_opts, index=0)
+
+mask = pd.Series([True] * len(df))
+if col_pick != "All":
+    mask &= df["College"] == col_pick
+if mot_pick != "All":
+    mask &= df["Gift Allocation"] == mot_pick
+df_filt = df[mask]
+
+# ---------- ALTAIR SELECTIONS ----------
+state_select = alt.selection_point(fields=["state_fips"], toggle=False, empty="all")
+brush = alt.selection_interval(encodings=["x"])
+subcategory_select = alt.selection_point(fields=["Allocation Subcategory"],
+                                         toggle="event", empty="all")
+
+# ---------- CHOROPLETH MAP ----------
+states = alt.topo_feature(data.us_10m.url, "states")
+map_chart = (
+    alt.Chart(states)
+    .mark_geoshape(stroke="white", strokeWidth=0.5)
+    .encode(
+        color=alt.condition(
+            state_select,
+            alt.Color("sum(Gift Amount):Q",
+                      scale=alt.Scale(scheme="blues"),
+                      title="Total Gifts ($)"),
+            alt.value("lightgray")
+        ),
+        tooltip=[
+            alt.Tooltip("sum(Gift Amount):Q", title="Total Gifts ($)", format=",.0f"),
+            alt.Tooltip("count():Q", title="# Gifts")
+        ]
+    )
+    .transform_lookup(
+        lookup="id",
+        from_=alt.LookupData(df_filt,
+                             key="state_fips",
+                             fields=["Gift Amount"])
+    )
+    .add_params(state_select)
+    .project(type="albersUsa")
+    .properties(width=380, height=250)
+)
+
+# ---------- LINE: GIFTS BY YEAR ----------
+line_chart = (
+    alt.Chart(df_filt)
+    .transform_filter(state_select)
+    .mark_line(point=True)
+    .encode(
+        x=alt.X("Year:O", sort="ascending"),
+        y=alt.Y("sum(Gift Amount):Q", title="Total Gifts ($)"),
+        tooltip=[
+            alt.Tooltip("Year:O", title="Year"),
+            alt.Tooltip("sum(Gift Amount):Q", title="Total Gifts ($)", format=",.0f")
+        ]
+    )
+    .add_params(brush)
+    .properties(width=380, height=250)
+)
+
+# ---------- BAR: TOTAL BY COLLEGE ----------
+bar_college = (
+    alt.Chart(df_filt)
+    .transform_filter(state_select)
+    .mark_bar()
+    .encode(
+        y=alt.Y("College:N", sort="-x", title="College"),
+        x=alt.X("sum(Gift Amount):Q", title="Total Gifts ($)"),
+        tooltip=[
+            alt.Tooltip("College:N", title="College"),
+            alt.Tooltip("sum(Gift Amount):Q", title="Total Gifts ($)", format=",.0f")
+        ]
+    )
+    .properties(width=380, height=400)
+)
+
+# ---------- BAR: TOTAL BY SUB-CATEGORY ----------
+bar_sub = (
+    alt.Chart(df_filt)
+    .transform_filter(state_select)
+    .transform_filter(brush)
+    .mark_bar()
+    .encode(
+        y=alt.Y("Allocation Subcategory:N", sort="-x",
+                title="Allocation Sub-category"),
+        x=alt.X("sum(Gift Amount):Q", title="Total Gifts ($)"),
+        color=alt.condition(
+            subcategory_select, alt.value("#1f77b4"), alt.value("lightgray")
+        ),
+        tooltip=[
+            alt.Tooltip("Allocation Subcategory:N", title="Sub-category"),
+            alt.Tooltip("sum(Gift Amount):Q", title="Total Gifts ($)", format=",.0f")
+        ]
+    )
+    .add_params(subcategory_select)
+    .properties(width=380, height=400)
+)
+
+# ---------- LAYOUT ----------
+upper = alt.hconcat(map_chart, line_chart).resolve_scale(color="independent")
+lower = alt.hconcat(bar_college, bar_sub)
+st.altair_chart(alt.vconcat(upper, lower), use_container_width=True)

requirements.txt

@@ -1,3 +1,5 @@
-altair
+streamlit==1.35.0
 pandas
-streamlit
+altair==5.3.0
+vega_datasets
+us