testing

app.py

@@ -12,6 +12,8 @@
 # limitations under the License.
 
 import leafmap.foliumap as leafmap
+import rioxarray
+import geopandas as gpd
 import streamlit as st
 import altair as alt
 import ibis
@@ -26,31 +28,76 @@ st.set_page_config(layout="wide", page_title="Leafmap Explorer", page_icon="⚡"
 # Leafmap explorer
 
 '''
-# -
 
+
+deforest = "https://data.source.coop/vizzuality/lg-land-carbon-data/deforest_carbon_100m_cog.tif"
+irrecoverable = "https://data.source.coop/cboettig/carbon/cogs/irrecoverable_c_total_2018.tif"
+vulnerable = "https://data.source.coop/cboettig/carbon/cogs/vulnerable_c_total_2018.tif"
+
+
+# m.add_cog_layer("https://data.source.coop/cboettig/carbon/cogs/irrecoverable_c_total_2018.tif", palette="reds", name="irrecoverable carbon", transparent_bg=True, opacity = 0.8)
+# m.add_cog_layer("https://data.source.coop/cboettig/carbon/cogs/vulnerable_c_total_2018.tif", palette="purples", name="vulnerable carbon", transparent_bg=True, opacity = 0.8)
+
+
+
+# +
 code = '''
 m = leafmap.Map(center=[35, -100], zoom=3)
-m.add_cog_layer("https://data.source.coop/cboettig/carbon/cogs/irrecoverable_c_total_2018.tif", palette="reds", name="irrecoverable carbon", transparent_bg=True, opacity = 0.8)
-m.add_cog_layer("https://data.source.coop/cboettig/carbon/cogs/vulnerable_c_total_2018.tif", palette="purples", name="vulnerable carbon", transparent_bg=True, opacity = 0.8)
 m.add_cog_layer("https://data.source.coop/cboettig/carbon/cogs/manageable_c_total_2018.tif", palette="greens", name="manageable carbon", transparent_bg=True, opacity = 0.8)
 '''
 
 
+polygon = '''
+{"type":"Feature","properties":{},"geometry":{"type":"Polygon","coordinates":[[[-123.011169,40.728527],[-123.011169,40.798217],[-122.956924,40.798217],[-122.956924,40.728527],[-123.011169,40.728527]]]}}
+'''
+
+
 # +
 ## Map controls sidebar
 
 with st.sidebar:
 
-    "## Map controls"
+    "# Map controls"
+
+    '''
+    ###  Polygon selector
+    
+    Use the map tools to draw a polygon (e.g. box area) anywhere on the map.
+    Click inside the box when you are done to show the coordinates.
+    Please paste those coordinates (or any geojson of your choosing) here
+    to see summary statistics on the map.
+    '''
+    
+    polygon = st.text_area(
+        label = "geometry",
+        value = polygon, 
+        height = 400)
+
+
+    "### Execute arbitrary python code:"
     
     code = st.text_area(
         label = "Python code",
         value = code, 
         height = 400)
 
-# -
 
 
+# +
+geo = gpd.read_file(polygon, driver='GeoJSON')
+geo.set_crs('epsg:4326')
+
+x = (rioxarray.
+     open_rasterio('/vsicurl/'+deforest, masked=True).
+     rio.clip(geo.geometry.values, geo.crs, from_disk=True).
+     mean()
+    )
+
+st.write(float(x))
+# -
+
 eval(code)
 m.to_streamlit(height=700)
 
+
+

requirements.txt

@@ -5,4 +5,5 @@ streamlit
 leafmap
 ibis-framework[duckdb]
 altair
-
+rioxarray
+geopandas