00097_flood_depth

 /*
Tutorial Code by Amirhossein Ahrari
YouTube: https://www.youtube.com/@amirhosseinahrarigee
Tutorial Video: Google Earth Engine Tutorial-102: Flood Depth Mapping

This code is part of a tutorial series on Earth Engine programming techniques
presented on the Amirhossein Ahrari YouTube channel. You are free to use and modify
this code for academic and non-academic purposes. Don't forget to subscribe to
the Amirhossein Ahrari channel and follow the videos to support the instructor!
*/

var cor = [
  [52.3061190642205,28.827145835706336], 
  [54.3825350798455,28.827145835706336], 
  [54.3825350798455,30.227545129963662], 
  [52.3061190642205,30.227545129963662], 
  [52.3061190642205,28.827145835706336]
  ]

var geometry = ee.Geometry.Polygon(cor)


var jrc = ee.ImageCollection("JRC/CEMS_GLOFAS/FloodHazard/v1")
.filterBounds(geometry)

print(jrc.aggregate_array('return_period'))

var flood_10 = jrc
.filterBounds(geometry)
.filter(ee.Filter.eq('return_period', 10)).mosaic()

print(flood_10)

Map.addLayer(flood_10.clip(geometry),{palette:['skyblue', 'blue', 'darkblue']}, 'flood10', false)

print(
  ui.Chart.image.histogram(flood_10, geometry, 1000)
  )


var flood_20 = jrc
.filterBounds(geometry)
.filter(ee.Filter.eq('return_period', 20)).mosaic()

Map.addLayer(flood_20.clip(geometry), {palette:['skyblue', 'blue', 'darkblue']}, 'flood20', false)


var flood_100 = jrc
.filterBounds(geometry)
.filter(ee.Filter.eq('return_period', 100)).mosaic()

Map.addLayer(flood_100.clip(geometry), {palette:['skyblue', 'blue', 'darkblue']}, 'flood100', false)

Export.image.toDrive({
  image: flood_10.clip(geometry), 
  description: 'flood10_iran', 
  region: geometry, 
  scale: 1000, 
  crs: 'EPSG:4326', 
  folder: 'test', 
  maxPixels: 1e13
  })




// var depthVis = {
//   min: 0,
//   max: 1,
//   palette: ['ffffff','0000ff'],
// };

// Map.addLayer(jrc,depthVis, 'flood_depth',true)