HELP REQUEST: core.matrix setup with aljabr implementation

[Seamus O'Keefe]

Hi.  I was wondering if someone could point me in the right direction on getting core.matrix set up for ClojureScript using the aljabr implementation.

I have the following:

(ns hellomatrix.core

  (:require [quil.core :as q :include-macros true]

            [quil.middleware :as mw]

            [clojure.core.matrix :as m :include-macros true]

            [thinktopic.aljabr.core :as nd :include-macros true]))

(enable-console-print!)

(m/set-current-implementation thinktopic.aljabr.core)

(m/implementation-check)

Which gives me a "No current clojure.core.matrix implementation available (no canonical)" error.  Not sure what to try next, as my many Google searches have come up with nothing.  Anyone's help would be greatly appreciated!

[Mars0i]

Assuming that you have aljabr included in project.clj, the correct syntax for the second to last line in your code should be:

(m/set-current-implementation :aljabr)

Here's what I have in project.clj:

:dependencies [...
                         [thinktopic/aljabr "0.1.2-SNAPSHOT"]
                         ...]

Here's an illustration at a Clojure prompt, but I believe I had aljabr working with Clojurescript, too.  It's been a while since I experimented with aljabr.

user=> (use 'clojure.core.matrix)
nil
user=> (set-current-implementation :aljabr)
:aljabr
user=> (matrix [[1 2][3 4]])
#object[thinktopic.aljabr.core.NDArray2float64 0x5159fd25 "{:offset 0, :type :float64, :size 4, :total 4, :shape [2 2], :stride [2 1], :data #object[\"[D\" 0x4f844655 \"[D@4f844655\"]}"]

[Seamus O'Keefe]

Thanks for the reply.

I have the 0.1.1 release specified in my dependencies, which could be the issue, but the version you have isn't available at clojars, so I'm not sure where to obtain 0.1.2-SNAPSHOT.

Also, when I use the :aljabr keyword to set the implementation in Clojurescript, it gives the following message:

INFO: No dynamic loading of implementations in Clojurescript.

You must require an implementation explicitly in a namespace, for example thinktopic.aljabr.core

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[Mars0i]

Seamus, sorry about that--I forgot that set-current-implementation doesn't work in Clojurescript.  Please see Jeff Rose's response in the next thread.  He certainly knows more than I do. 

(If you want to use 0.1.2-SNAPSHOT I think you have to get the source by installing the aljabar git repo locally and then compiling it and installing the results locally.   I haven't done this recently, so I don't want to give you the wrong advice, so I won't say more, but it's easy to do.)

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