Update app.py

app.py

@@ -1,23 +1,59 @@
-from shiny import reactive
-from shiny.express import input, ui
-from shinywidgets import render_widget
 import ee
-import geemap 
+import geemap
+from shiny import App, reactive, render, ui
+from shinywidgets import output_widget, render_widget
+from faicons import icon_svg
 
 geemap.ee_initialize(service_account=True)
 
-city_centers = {
-    "London": (51.5074, 0.1278),
-    "Paris": (48.8566, 2.3522),
-    "New York": (40.7128, -74.0060)
-}
+app_ui = ui.page_sidebar(
+    ui.sidebar(
+        ui.input_action_button(
+            'button',
+            'Generate map',
+            icon = icon_svg('play')
+        )
+    ),
+    ui.layout_column_wrap(
+       output_widget('result')
+    ),
+    title    = "Test geemap",
+    fillable = True,
+)
 
-ui.input_select("center", "Center", choices=list(city_centers.keys()))
 
-@render_widget
-def map():
-    return ipyl.Map(zoom=4)
+def server(input, output, session):
 
-@reactive.effect
-def _():
-    map.widget.center = city_centers[input.center()]
+    @reactive.calc
+    @reactive.event(input.button)
+    def generate_map():
+
+        Map = geemap.Map(center=[40, -100], zoom=4)
+        
+        landsat7 = (
+              ee.Image('LANDSAT/LE7_TOA_5YEAR/1999_2003')
+              .select(['B1', 'B2', 'B3', 'B4', 'B5', 'B7'])
+        )
+        
+        landsat_vis = {'bands': ['B4', 'B3', 'B2'], 'gamma': 1.4}
+        
+        Map.addLayer(landsat7, landsat_vis, "Landsat")
+        
+        hyperion = ee.ImageCollection('EO1/HYPERION').filter(ee.Filter.date('2016-01-01', '2017-03-01'))
+        
+        hyperion_vis = {
+             'min': 1000.0,
+             'max': 14000.0,
+             'gamma': 2.5,
+             }
+        Map.addLayer(hyperion, hyperion_vis, 'Hyperion')
+
+        return Map
+    
+    @output
+    @render_widget
+    def result():
+        return generate_map()
+
+
+app = App(app_ui, server)