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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Masked arrays","articleBody":"Numpy supports masked arrays which is very useful for many use-cases. Are there any plans how a similar feature could be implemented for rust-ndarray?\n\nMy current idea would be to build a decorator which wraps an array and contains an additional mask object: `struct MaskedArray\u003cA, M\u003e{\n    array: A,\n    mask: M,\n}`\n\nThe mask itself should be a trait (and/or enum?) to handle the following cases:\n- _empty_ (no elements are masked)\n- _hard mask:_ a bool array with the same shape as the data array (masking by coordinate)\n- _no-data value_ (masking by value)\n- _predicate_ (masking by value and/or coordinate)\n\nThe problem with this approach is that there is currently no array trait which is needed for the decorator pattern.\n","author":{"url":"https://github.com/jdroenner","@type":"Person","name":"jdroenner"},"datePublished":"2016-03-05T19:18:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/127/ndarray/issues/127"}