Help with Incanter and Emacs

[Akhil Wali]

Hi All, 

A really noob question.

Why do I get "FileNotFoundException Could not locate incanter__init.class or  incanter.clj on classpath:   clojure.lang.RT.load (RT.java:443)" when i load a file that uses incanter in emacs?

Here's the file...

(ns default.core

  (:require incanter core charts stats datasets))

(defn plot []

  (view (scatter-plot :Sepal.Length :Sepal.Width

                      :group-by :Species

                      :data (get-dataset :iris))))

(plot)

This works in lein repl just fine.

I'm using Emacs 24 and nrepl.el 0.1.8.

This issue was posted on Github way long back. Seems to be solved, but by simply upgrading emacs. Doesn't really work in my case.

Any advise?

[Tim Visher]

Couple things.

1. I'm assuming you've declared the proper dependencies in your
`project.clj` file since this works from `lein repl`, however it's
worth checking.

2. How are you connecting to your project? Simply loading the
namespace won't work if you haven't properly jack in. There's a number
of options here but the simplest is probably to use `M-x
nrepl-jack-in` (usually bound to `C-c M-j`) from this file. It should
Just Work™.

If that doesn't work, I'd probably post some more details about the
project somewhere. At least the `project.clj` and the whole ns would
be helpful in a gist of some sort.

--

In Christ,

Timmy V.

http://blog.twonegatives.com/
http://five.sentenc.es/ -- Spend less time on mail

[Akhil Wali]

Well 

Here's my project.clj.

(defproject someproj "0.1.0-SNAPSHOT"

  :dependencies [[org.clojure/clojure "1.5.1"]

                 [incanter "1.5.2"]])

Here's my .lein/profiles.clj as well.

{:user {:plugins [[lein-ritz "0.7.0"]

                  [compojure-app/lein-template "0.2.7"]]

        :dependencies [[ritz/ritz-nrepl-middleware "0.7.0"]]

        :repl-options {:nrepl-middleware

                       [ritz.nrepl.middleware.javadoc/wrap-javadoc

                        ritz.nrepl.middleware.simple-complete/wrap-simple-complete]}}}

[Tim Visher]

And you're connecting to the project how?

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[Akhil Wali]

Yes, by nrepl-jack-in.

[Akhil Wali]

Well this is embarrassing. 

I was having a wrong use syntax >.<.

Changed the import line to this and it works.

(ns default.core

  (:use [incanter core charts stats datasets]))

Thanks for the help though!!

[Tim Visher]

LOL. I just realized I'd been missing that all along.

It seems like the community is more and more leaning to something like
this, just FYI.

(ns default.core
(:require (incanter [core :refer :all]
[charts :refer :all]
[stats :refer :all]
[datasets :refer :all])))

`:use` has been discussed in the interest of deprecating it many times.

I did not test the above declaration.

[Akhil Wali]

Ah I see. :use is deprecated since 1.4. And your ns declaration works fine! Kudos!

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[Robert Berger]

Wish this was in the Incanter docs and in the Readme

[Sam Raker]

For something that's been "deprecated" for a while now, `use` sure still shows up in A LOT of docs/tutorials/books/etc.