Add JRC app

pages/01_jrc.py

@@ -0,0 +1,85 @@
+import os
+import ee
+import geemap
+import ipywidgets as widgets
+from IPython.display import display
+import solara
+
+
+class Map(geemap.Map):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        url = "https://mt1.google.com/vt/lyrs=y&x={x}&y={y}&z={z}"
+        self.add_tile_layer(url, name="Google Satellite", attribution="Google")
+        self.add_ee_data()
+        self.add_buttons(add_header=True)
+
+    def add_ee_data(self):
+
+        dataset = ee.Image("JRC/GSW1_4/GlobalSurfaceWater")
+        image = dataset.select(["occurrence"])
+        vis_params = {
+            "min": 0.0,
+            "max": 100.0,
+            "palette": ["ffffff", "ffbbbb", "0000ff"],
+        }
+        self.addLayer(image, vis_params, "Occurrence")
+        self.add_colorbar(
+            vis_params, label="Water occurrence (%)", layer_name="Occurrence"
+        )
+
+    def add_buttons(self, position="topright", **kwargs):
+        widget = widgets.VBox()
+        layout = layout = widgets.Layout(width="auto")
+        hist_btn = widgets.Button(description="Show histogram", layout=layout)
+        bar_btn = widgets.Button(description="Show bar chart", layout=layout)
+        reset_btn = widgets.Button(description="Reset", layout=layout)
+        scale = widgets.IntSlider(min=30, max=1000, value=90, description="Scale")
+        widget.children = [widgets.HBox([hist_btn, bar_btn, reset_btn]), scale]
+        self.add_widget(widget, position=position, **kwargs)
+        output = widgets.Output()
+        self.add_widget(output, position="bottomleft", add_header=False)
+
+        def hist_btn_click(b):
+            region = self.user_roi
+            if region is not None:
+                image = ee.Image("JRC/GSW1_4/GlobalSurfaceWater").select(["occurrence"])
+                self.default_style = {"cursor": "wait"}
+                hist = geemap.image_histogram(
+                    image,
+                    region,
+                    scale=60,
+                    height=350,
+                    width=550,
+                    x_label="Water Occurrence (%)",
+                    y_label="Pixel Count",
+                    layout_args={
+                        "title": dict(x=0.5),
+                        "margin": dict(l=0, r=0, t=10, b=0),
+                    },
+                    return_df=False,
+                )
+                output.clear_output()
+                with output:
+                    display(hist)
+                self.default_style = {"cursor": "default"}
+
+        hist_btn.on_click(hist_btn_click)
+
+        def reset_btn_click(b):
+            self._draw_control.clear()
+            output.clear_output()
+
+        reset_btn.on_click(reset_btn_click)
+
+
+@solara.component
+def Page():
+    with solara.Column(style={"min-width": "500px"}):
+        Map.element(
+            center=[20, -0],
+            zoom=2,
+            height="800px",
+            zoom_ctrl=False,
+            measure_ctrl=False,
+        )

pages/02_inspector.py

@@ -1,53 +0,0 @@
-import os
-import ee
-import geemap
-
-import solara
-
-# service_account = os.environ.get("EARTHENGINE_SERVICE_ACCOUNT", False)
-# if isinstance(service_account, str):
-#     service_account = True
-# geemap.ee_initialize(service_account=service_account)
-
-
-class Map(geemap.Map):
-    def __init__(self, **kwargs):
-        super().__init__(**kwargs)
-        self.add_ee_data()
-        self.add("layer_manager")
-        self.add("inspector")
-
-    def add_ee_data(self):
-        # Add Earth Engine dataset
-        dem = ee.Image("USGS/SRTMGL1_003")
-        landsat7 = ee.Image("LANDSAT/LE7_TOA_5YEAR/1999_2003").select(
-            ["B1", "B2", "B3", "B4", "B5", "B7"]
-        )
-        states = ee.FeatureCollection("TIGER/2018/States")
-
-        # Set visualization parameters.
-        vis_params = {
-            "min": 0,
-            "max": 4000,
-            "palette": ["006633", "E5FFCC", "662A00", "D8D8D8", "F5F5F5"],
-        }
-
-        # Add Earth Engine layers to Map
-        self.addLayer(
-            landsat7,
-            {"bands": ["B4", "B3", "B2"], "min": 20, "max": 200, "gamma": 2.0},
-            "Landsat 7",
-            True,
-        )
-        self.addLayer(dem, vis_params, "SRTM DEM", True, 1)
-        self.addLayer(states, {}, "US States")
-
-
-@solara.component
-def Page():
-    with solara.Column(style={"min-width": "500px"}):
-        Map.element(
-            center=[40, -100],
-            zoom=4,
-            height="600px",
-        )

pages/03_plotting.py

@@ -4,11 +4,6 @@ import geemap
 
 import solara
 
-# service_account = os.environ.get("EARTHENGINE_SERVICE_ACCOUNT", False)
-# if isinstance(service_account, str):
-#     service_account = True
-# geemap.ee_initialize(service_account=service_account)
-
 
 class Map(geemap.Map):
     def __init__(self, **kwargs):

pages/04_split_map.py

@@ -4,11 +4,6 @@ import geemap
 
 import solara
 
-# service_account = os.environ.get("EARTHENGINE_SERVICE_ACCOUNT", False)
-# if isinstance(service_account, str):
-#     service_account = True
-# geemap.ee_initialize(service_account=service_account)
-
 
 class Map(geemap.Map):
     def __init__(self, **kwargs):