You could use ereduce (elementwise reduce) in core.matrix to do this.
Something like:
(let [NaN Double/NaN
[sum n] (ereduce
(fn [[acc cnt] x] (if (Double/isNaN x) [acc cnt] [(+ acc
x) (inc cnt)]))
[0 0]
[0.0 1.0 NaN 2.0 NaN 3.0 4.0 NaN])]
(/ sum n))
=> 2.0
On Wednesday, 10 July 2013 05:03:55 UTC+1, Brian Craft wrote:
>
> Is there any way to do masked arrays (like numpy) with core.matrix, or
> another lib? I need to be able to, for example, compute a mean while
> skipping nan values, which is easily done with masked arrays.
--
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to [email protected]
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
