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I know how to reduce a collection to one image, or an image to a value in Google Earth Engine. But I can not find an easy way to reduce each image in a collection to a statistics and get a list of that. How it can be done?

As it is easy to get a list of a metadata property over a collection, I was thinking that maybe I can just add my statistics as a metadata to each image, but I couldn't find any way to add a property to the image. Also even if I can, then maybe I can not apply it over collection because the output is not a map.

Any help?

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  • What statistics are you looking for - can you provide a (code) example of the calculation you perform for a single image?
    – Kersten
    Commented Jul 11, 2018 at 6:28
  • I mean, I can define a region in an image and then calculate the minimum value of a desired band using image.reduceRegion. Also I can reduce the collection of images to an image consisting of minimum values for each pixel through all collection using collection.reduce. But I want to reduce each image in the collection separately and have the minimum of all of its pixels in a list.
    – Shahriar49
    Commented Jul 11, 2018 at 20:09
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    I think what you want to do is to map the reducer function over the collection? developers.google.com/earth-engine/ic_mapping
    – Christoph Rieke
    Commented Jul 13, 2018 at 17:24
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    You should mark this as answered.
    – Noel Gorelick
    Commented Jan 9, 2019 at 13:52
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    @Noel Sorry but I can not find a way to mark this as answered! There are just two up and down arrows and a star at the right side of my question, and nothing else.
    – Shahriar49
    Commented Jan 16, 2019 at 20:14

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