Update app.py

app.py

@@ -3,9 +3,10 @@ import pandas as pd
 import plotly.express as px
 from io import BytesIO
 
-# Page configuration
+# Page config
 st.set_page_config(page_title="Research Gantt Chart", layout="wide")
 
+# Title and description
 st.title("📊 Research Proposal Gantt Chart")
 st.markdown("""
 This Gantt chart outlines the 10-month timeline for your research project:  
@@ -15,39 +16,39 @@ Each phase is color-coded and aligned with your methodology for formal presentat
 
 # Define task data
 tasks = [
-    {"Phase": "Literature Review", "Start": 1, "End": 2, "Color": "SteelBlue"},
-    {"Phase": "UG-37 Calculations", "Start": 2, "End": 3, "Color": "SlateGray"},
-    {"Phase": "Finite Element Analysis (FEA)", "Start": 3, "End": 6, "Color": "DarkOrange"},
-    {"Phase": "Comparative Study", "Start": 6, "End": 7, "Color": "Teal"},
-    {"Phase": "Recommendations", "Start": 7, "End": 8, "Color": "Olive"},
-    {"Phase": "Thesis & Journal Prep", "Start": 8, "End": 9, "Color": "Navy"},
-    {"Phase": "Buffer Month", "Start": 10, "End": 10.5, "Color": "LightGray"},
+    {"Phase": "Literature Review", "Start": "2025-09-01", "Finish": "2025-10-31", "Color": "SteelBlue"},
+    {"Phase": "UG-37 Calculations", "Start": "2025-11-01", "Finish": "2025-11-30", "Color": "SlateGray"},
+    {"Phase": "Finite Element Analysis (FEA)", "Start": "2025-12-01", "Finish": "2026-02-28", "Color": "DarkOrange"},
+    {"Phase": "Comparative Study", "Start": "2026-03-01", "Finish": "2026-03-31", "Color": "Teal"},
+    {"Phase": "Recommendations", "Start": "2026-04-01", "Finish": "2026-04-30", "Color": "Olive"},
+    {"Phase": "Thesis & Journal Prep", "Start": "2026-05-01", "Finish": "2026-05-31", "Color": "Navy"},
+    {"Phase": "Buffer Month", "Start": "2026-06-01", "Finish": "2026-06-30", "Color": "LightGray"},
 ]
 
 df = pd.DataFrame(tasks)
-df["Duration"] = df["End"] - df["Start"]
 
 # Create Gantt chart
 fig = px.timeline(
     df,
     x_start="Start",
-    x_end="End",
+    x_end="Finish",
     y="Phase",
     color="Phase",
     color_discrete_map={row["Phase"]: row["Color"] for row in tasks},
     title="Gantt Chart: ASME Nozzle Reinforcement Study",
 )
 
+# Format chart
 fig.update_layout(
-    xaxis_title="Month",
+    xaxis_title="Timeline",
     yaxis_title="Research Phase",
     title_font=dict(size=22, family="Segoe UI"),
     font=dict(size=14),
     showlegend=False,
     margin=dict(l=40, r=40, t=80, b=40),
     height=650,
-    xaxis=dict(tickmode="linear", tick0=1, dtick=1, range=[0.5, 11]),
 )
+fig.update_yaxes(autorange="reversed")  # Gantt-style top-down
 
 # Display chart
 st.plotly_chart(fig, use_container_width=True)