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Results tagged with reducers
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user 76935
1
vote
1
answer
691
views
Earth Engine: combining reducers does not give same output as running reducers separately?
I am trying to combine reducers, which according to my understanding, is running parallel yet independent reducers when using sharedInputs: true (see doc). … We get:
Separate reducers:
weighted: -9079.394626741121
unweighted: -9086.503929115412
Combined reducers:
weighted: -9438.194106051067
unweighted: -9079.394626741121
What is going on? …
- 2,048
1
vote
1
answer
186
views
Earth Engine: different results with "covariance" and "centeredCovariance" on de-meaned data?
EE offers two reducers:
ee.Reducer.centeredCovariance
ee.Reducer.covariance. …
- 2,048
2
votes
2
answers
1k
views
earthEngine: count number of fully covered pixels within a region
I would like to count the number of pixels that are fully covered by a given region/geometry. How can I do that? Using standard reducer, I can get:
ee.Reducer.count() will just count the number of p …
- 2,048
3
votes
2
answers
1k
views
Combining grouped reducers in Earth Engine
In Earth Engine, one can easily apply a same reducer to multiple band in an image. Unfortunately, it seems that this nice feature breaks if one uses a grouped-reducer?
repeat() will work if one seeks …
- 2,048
1
vote
1
answer
768
views
EarthEngine: how to rename output of reducer, with multiple bands?
I would like to change the output name of a reducer, ideally by appending "_prefix" on each band. setOutputs() function does it (partially) when there is only one band, but not when there are multiple …
- 2,048