How to get the number of objects array after applying the filter?

Question

How to get an array of objects after filtering in Yandex.Maps? I try this:

flats.setFilter(filters); myMap.geoObjects.add(flats); alert('Количество отфильтрованных объектов на карте: ' + flats.objects.overlays.getLenght());

As if overlay is incorrectly specified

There is an array of 100 apartments with data on them (area, price, etc.).
I set the filter: 1 million <price <2 million. There were, say, 50 such apartments. I display these 50 apartments on the map.
And you need to get the number of these apartments and an array of them.
The total number of apartments to get is obtained: flats.objects.getLength ().
Is the wrong value returned or does the code fail with an error?
If you put together an example on jsfiddle (or right here in the question), it will be much easier to answer your question.
Overlays are created asynchronously, so there are 0 of them. Do you want the number of filtered elements in general or the number of filtered elements visible on the map?

flapenguin flapenguin 1,150 2 eight · Accepted Answer · 2018-01-15T17:41:43

You can get an array of filtered objects themselves as isFilteredOut :

 objectManager.getAll().filter(function(x) { return !objectManager.getObjectState(x.id).isFilteredOut; })

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