CODEWITHSUNDEEP
google-earth-engine
Cord
Cord

Reputation: 196

google earth engine: ee.List() output as an integer?

may I not JSON.stringify() the output of ee.List() ?

var dates = ee.List(imageCollection.get('date_range'));
print('type: ', typeof(dates));
print('JSON.stringify: ', JSON.stringify(dates));

print('Date zero: ', dates.get(0));
print('type: ', typeof(dates.get(0)))
print('JSON.stringify: ', JSON.stringify(dates.get(0)))

and the console says:

type: 
object
JSON.stringify: 
{} 

Date zero: 
1365638400000
type: 
object
JSON.stringify: 
{}

my end-game is to interpret dates.get(0) as an integer....

Upvotes: 2

Views: 2421

Answers (1)

Nicholas Clinton
Nicholas Clinton

Reputation: 893

Those are server objects. You have to request their value (with the synchronous getInfo() or the asynchronous evaluate()) to mix and match with a client-side function like JSON.stringify():

var dates = ee.List(imageCollection.get('date_range'));
print('type: ', typeof(dates));
print('JSON.stringify: ', JSON.stringify(dates.getInfo()));

print('Date zero: ', dates.get(0));
print('type: ', typeof(dates.get(0)))
print('JSON.stringify: ', JSON.stringify(dates.get(0).getInfo()))

Note that there's no need to stringify anything at this point. i.e. dates.get(0).getInfo() is a Number:

print('A number: ', Number(dates.get(0).getInfo()))

Upvotes: 2

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