Clip Image by Feature/FeatureCollections in Google Earth Engine

Earth engine is a powerful platform to deal with massive scale earth observation datasets. Clip is one of the useful functions in Google Earth Engine that use to clip raster image or image collections for a specific area as a feature or feature collection.

Here, I will show you, how we can clip the MODIS NDVI for Bangladesh.

// Load a MODIS NDVI dataset
var modisNDVI = ee.ImageCollection('MODIS/006/MOD13A2')
  .filterDate('2020-01-01', '2020-12-31')
  .select('NDVI')
  .median();

Now, we will load countries boundary feature collections available in the Earth engine and filter this dataset for Bnagladesh and finally, we will use this filtered feature to clip NDVI.

// Load the administrative boundaries of Bangladesh from GEE's built-in dataset
var countries = ee.FeatureCollection('USDOS/LSIB_SIMPLE/2017');
var bangladesh = countries.filter(ee.Filter.eq('country_na', 'Bangladesh'));

// Clip the MODIS NDVI dataset to the Bangladesh administrative boundary
var clippedNDVI = modisNDVI.clip(bangladesh);

// Display the clipped NDVI on the map
Map.centerObject(bangladesh, 7);
Map.addLayer(clippedNDVI, {
  min: 0,
  max: 8000,
  palette: ['FFFFFF', 'CE7E45', 'DF923D', 'F1B555', 'FCD163', '99B718', '74A901', '66A000', '529400', '3E8601', '207401', '056201', '004C00', '023B01', '012E01', '011D01', '011301']
}, 'Clipped NDVI');

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