Update app.py

app.py

@@ -1,33 +1,75 @@
-# app.py
 import streamlit as st
-import runpy
+import subprocess
+import os
 
-# 1. Page config & title
-st.set_page_config(page_title="Machine Learning Models Visualization Hub")
-st.title("Machine Learning Models Visualization Tools")
+st.set_page_config(page_title="ML Visualizations Launcher", layout="wide")
+st.title("Machine Learning Visualizations Dashboard")
 
-# 2. Map display names → filenames
+# List of available apps with display names and ports
 APPS = {
-    "Gradient Descent Visualization":      "gd_sgd_app.py",
-    "Decision Tree (step-by-step)":        "decision_tree_steps.py",
-    "Bagging Classifier Visualization":    "bagging_classifier_viz.py",
-    "Bagging Regressor Visualization":     "bagging_regressor_viz.py",
-    "Voting Classifier Visualization":     "voting_classifier_viz.py",
-    "Voting Regressor Visualization":      "voting_regressor_viz.py",
+    "Decision Tree Steps": {
+        "file": "decision_tree_steps.py",
+        "port": 8502
+    },
+    "Voting Regressor": {
+        "file": "voting_regressor_viz.py", 
+        "port": 8503
+    },
+    "Voting Classifier": {
+        "file": "voting_classifier_viz.py",
+        "port": 8504
+    },
+    "Bagging Regressor": {
+        "file": "bagging_regressor_viz.py",
+        "port": 8505
+    },
+    "Bagging Classifier": {
+        "file": "bagging_classifier_viz.py",
+        "port": 8506
+    },
+    "GD/SGD Visualizer": {
+        "file": "gd_sgd_app.py",
+        "port": 8507
+    }
 }
 
-# 3. Check for query‑param to run one of the apps
-params   = st.experimental_get_query_params()
-selected = params.get("app", [None])[0]
-
-if selected in APPS.values():
-    # Run the selected Streamlit app in this process
-    runpy.run_path(selected, run_name="__main__")
-else:
-    # 4. Otherwise show a grid of buttons
-    cols = st.columns(2)
-    for idx, (label, fname) in enumerate(APPS.items()):
-        col = cols[idx % 2]
-        if col.button(label, key=label):
-            # set the query‑param and rerun
-            st.experimental_set_query_params(app=fname)
+def launch_app(file_path, port):
+    """Launch a Streamlit app in a subprocess"""
+    cmd = f"streamlit run {file_path} --server.port {port}"
+    subprocess.Popen(cmd, shell=True)
+
+# Create columns for app launcher buttons
+col1, col2, col3 = st.columns(3)
+
+with col1:
+    for app_name in list(APPS.keys())[::3]:
+        app = APPS[app_name]
+        if os.path.exists(app["file"]):
+            if st.button(f"🚀 {app_name}"):
+                launch_app(app["file"], app["port"])
+                st.toast(f"Opening {app_name} on port {app['port']}", icon="✅")
+        else:
+            st.error(f"Missing file: {app['file']}")
+
+with col2:
+    for app_name in list(APPS.keys())[1::3]:
+        app = APPS[app_name]
+        if os.path.exists(app["file"]):
+            if st.button(f"🚀 {app_name}"):
+                launch_app(app["file"], app["port"])
+                st.toast(f"Opening {app_name} on port {app['port']}", icon="✅")
+        else:
+            st.error(f"Missing file: {app['file']}")
+
+with col3:
+    for app_name in list(APPS.keys())[2::3]:
+        app = APPS[app_name]
+        if os.path.exists(app["file"]):
+            if st.button(f"🚀 {app_name}"):
+                launch_app(app["file"], app["port"])
+                st.toast(f"Opening {app_name} on port {app['port']}", icon="✅")
+        else:
+            st.error(f"Missing file: {app['file']}")
+
+st.markdown("---")
+st.info("ℹ️ Each app will open in a new tab automatically. Allow pop-ups if your browser blocks them.")