get min max of an image

September 27, 2018 mygeoblog GIS, Javascript 2 comments

Get stats of an area

Step 1: Display the srtm using the code below.

// import srtm dem
var srtm = ee.Image("USGS/SRTMGL1_003");

// mask areas less than 0
srtm = srtm.mask(srtm.gt(0));

// add layer to map
Map.addLayer(srtm,{min:??,max:??,palette:"??????"});

Step 2: Find the min max using the inspector.

Step 3: draw a geometry

Step 4: calculate the min max using the code below

var minMax = srtm.reduceRegion(ee.Reducer.minMax(),geometry);
print(minMax);

2 comments

s.g says:

August 20, 2021 at 3:05 pm

I have cooldn’t worked the code. Map.addLayer(srtm,{min:??,max:??,palette:”??????”}); there is a mistake about ? it say, thanks

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1. mcarslanoglu says:
  
  November 25, 2022 at 2:21 pm
  
  var geometry = ee.Geometry.Polygon(
  [[[44.06596982940921, 39.86569840255777],
  [44.06596982940921, 39.51909356184006],
  [44.57134092315921, 39.51909356184006],
  [44.57134092315921, 39.86569840255777]]]);
  
  // import srtm dem
  var srtm = ee.Image(“USGS/SRTMGL1_003”);
  
  // mask areas less than 0
  srtm = srtm.mask(srtm.gt(0));
  
  // add layer to map
  Map.addLayer(srtm,{min:0,max:8000});
  
  var minMax = srtm.reduceRegion(ee.Reducer.minMax(),geometry);
  print(minMax);
  
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