Clojuratica 安装配置指导: Clojure + Mathematica 的神奇组合
目录
- 概念介绍:Clojuratica=Clojure+Mathematica
- 周边环境需求
- 从GitHub安装Clojuratica
- 配置Clojuratica
- 创建一个新项目运行Clojuratica
- Clojuratica使用实例
- 参考说明
概念介绍:Clojuratica=Clojure+Mathematica
Clojuratica
简单说就是把 Clojure
和 Mathematica
组合起来了,可以通过 Clojure
来调用 Mathematica
的数千个函数。
按照作者的说法是 Clojuratica
集二者之长处,非常高大上,而且还易于使用,下面是 Clojuratica
站点对其优点的描述:
-
Clojuratica lets you
write and evaluate Mathematica code in Clojure
with fullsyntactic integration
. Now Clojure programs can take advantage of Mathematica's enormous range of numerical and symbolic mathematics algorithms and fast matrix algebra routines. -
Clojuratica provides the
seamless and transparent translation of native data structures
between Clojure and Mathematica. This includes high-precision numbers, matrices, N-dimensional arrays, and evaluated and unevaluated Mathematica expressions and formulae. -
Clojuratica lets you
call, pass, and store Mathematica functions just as if they were first-class functions in Clojure
. This is high-level functional programming at its finest. You can write a function in whichever language is more suited to the task and never think again about which platform is evaluating calls to that function. -
Clojuratica facilitates
the "Clojurization" of Mathematica's existing parallel-computing capabilities
. Mathematica is not designed for threads or concurrency. It has excellent support for parallel computation, but parallel evaluations are initiated from a single-threaded master kernel which blocks until all parallel evaluations return. By contrast, Clojuratica includes a concurrency framework that lets multiple Clojure threads execute Mathematica expressions without blocking others. Now it is easy to run a simulation in Clojure with 1,000 independent threads asynchronously evaluating processor-intensive expressions in Mathematica. The computations will be farmed out adaptively and transparently to however many Mathematica kernels are available on any number of processor cores, either locally or across a cluster, grid, or network.
不过该项目最近的版本更新是2009年的Version 2 alpha 2
。
周边环境需求
因为 Clojure
和 Mathmetica
都是多平台可用,因此 Clojuratica
理论上同时支持 Windows/OSX/Linux/Unix
多个平台,本文的环境是 Mac OSX 10.9
。
安装配置 Clojuratica
,需要事先安装好如下软件:
- Git
- ant
- Clojure + lein
具体的安装步骤就不多说了,使用 brew install git
和 brew install ant
安装好 git
和 ant
,再用 git
安装 Clojure
,详细教程可以自己搜索。
周边环境基本就这些要求。
从GitHub安装Clojuratica
先进入你准备存放 Clojuratica
项目的本地目录 ~/GitHub
cd ~/GitHub/
然后从 github
上把 Clojuratica
项目克隆下来
Air:GitHub admin$ git clone https://github.com/drcabana/Clojuratica
进入 Clojuratica
目录
Air:GitHub admin$ cd Clojuratica/
Air:Clojuratica admin$ ls
build.xml clojuratica.jar doc src
Air:Clojuratica admin$
用 ant
安装 Clojuratica
Air:Clojuratica admin$ ant jar
Buildfile: /Users/admin/GitHub/Clojuratica/build.xml
init:
compile:
jar:
[jar] Building jar: /Users/admin/GitHub/Clojuratica/clojuratica.jar
[echo] JAR written to /Users/admin/GitHub/Clojuraticaclojuratica.jar
BUILD SUCCESSFUL
Total time: 0 seconds
Air:Clojuratica admin$
很好,Clojuratica
安装成功。
接下来要做一些手工配置。
配置Clojuratica
首先要把 Clojuratica
项目内的 src/mma
目录中的三个 .m
文件拷贝到 Mathematica
文件夹里 的 Autoload
目录中,文件如下:
Air:Clojuratica admin$ cd ./src/mma
Air:mma admin$ ls
ClojurianScopes.m ClojurianScopes.nb FunctionalExtras.m HashMaps.m HashMaps.nb
Air:mma admin$
这里需要根据不同版本的 Mathematica
来确定目的地路径,我的版本是 Mathematica 8.0
,所以对应的路径为 /Applications/Mathematica/SystemFiles/Autoload/
,所以命令如下:
Air:mma admin$ cp *.m /Applications/Mathematica/Autoload/
接下来需要进入 ~/.lein
目录,修改一下配置文件 profiles.clj
,主要是增加这一句:
[lein-localrepo "0.4.1"]
下面是我的配置:
Air:mma admin$ cat ~/.lein/profiles.clj
{:user {:plugins [[lein-swank "1.4.0"]
[lein-localrepo "0.4.1"] ] } }
Air:mma admin$
然后要用 lein
把 clojuratica.jar
和 JLink.jar
安装到 localrepo
,命令如下:
lein localrepo install ~/GitHub/Clojuratica/clojuratica.jar local.repo/clojuratica 2.0_alpha3
lein localrepo install /Applications/Mathematica.app/Links/JLink/JLink.jar local.repo/JLink 8.0
不过第二条命令貌似没有成功,所以需要进入目录 .m2/repository/local/repo
中手动建立一个符号链接:
Air:mma admin$ cd ~/.m2/repository/local/repo/JLink
Air:JLink admin$ ls
8.0 maven-metadata-local.xml
Air:JLink admin$ ln -s /Applications/Mathematica.app/SystemFiles/Links/JLink/JLink.jar JLink-8.0.jar
最后用 tree
命令查看一下:
Air:JLink admin$ tree ~/.m2/repository/local/repo/JLink/
/Users/admin/.m2/repository/local/repo/JLink/
├── 8.0
│ ├── JLink-8.0.jar -> /Applications/Mathematica.app/SystemFiles/Links/JLink/JLink.jar
│ └── _maven.repositories
└── maven-metadata-local.xml
1 directory, 3 files
Air:JLink admin$
非常好,现在基本配置全部完成,接下来就可以创建一个 Clojuratica
的新项目了。
创建一个新项目运行Clojuratica
首先,用 lein
创建一个新项目,假设我们要把新项目 mmaclj2
创建在 ~/cljProject/
目录,命令如下:
Air:JLink admin$ cd ~/cljProject/
Air:cljProject admin$ lein new mmaclj2
Generating a project called mmaclj2 based on the 'default' template.
The default template is intended for library projects, not applications.
To see other templates (app, plugin, etc), try `lein help new`.
Air:cljProject admin$
进入新建项目的目录,查看一下:
Air:cljProject admin$ cd mmaclj2/
Air:mmaclj2 admin$ ls
LICENSE README.md doc project.clj resources src test
Air:mmaclj2 admin$
首先需要修改当前目录下的 project.clj
文件,我们可以先看一下它的内容:
Air:mmaclj2 admin$ cat project.clj
(defproject mmaclj2 "0.1.0-SNAPSHOT"
:description "FIXME: write description"
:url "http://example.com/FIXME"
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:dependencies [[org.clojure/clojure "1.6.0"]])
Air:mmaclj2 admin$
在依赖项中增加 JLink
和 clojuratica
,改为如下:
(defproject mmaclj2 "0.1.0-SNAPSHOT"
:description "FIXME: write description"
:url "http://example.com/FIXME"
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:dependencies [[org.clojure/clojure "1.6.0"]
[local.repo/JLink "8.0"]
[local.repo/clojuratica "2.0_alpha3"]])
然后需要进入 ./src/mmaclj2/
目录中:
Air:mmaclj2 admin$ cd ./src/mmaclj2/
Air:mmaclj2 admin$ ls
core.clj
Air:mmaclj2 admin$ pwd
/Users/admin/cljProject/mmaclj2/src/mmaclj2
Air:mmaclj2 admin$
在这里新增一个 connect.clj
文件,这段代码用于建立 Clojure
跟 Mathematica
的连接,内容如下:
(ns mmaclj2.connect
(:use clojuratica)
(:import [com.wolfram.jlink MathLinkFactory]))
(def kernel-link
(MathLinkFactory/createKernelLink
"-linkmode launch -linkname '/Applications/Mathematica.app/Contents/MacOS/MathKernel' '-mathlink'"))
(.discardAnswer kernel-link)
(def math-evaluate (math-evaluator kernel-link))
(def-math-macro math math-evaluate)
这里一定要注意第一句 ns mmaclj2.connect
,必须要跟你的项目名称 mmaclj2
一致。
很好,到现在为止,我们成功地创建了一个新的项目,并且完成这个项目的相关配置,接下来就可以尝试着运行了。
Clojuratica使用实例
首先在这个项目的目录内通过 lein repl
来启动交互接口,具体命令如下:
Air:mmaclj2 admin$ lein repl
nREPL server started on port 55552 on host 127.0.0.1 - nrepl://127.0.0.1:55552
REPL-y 0.3.1
Clojure 1.6.0
Docs: (doc function-name-here)
(find-doc "part-of-name-here")
Source: (source function-name-here)
Javadoc: (javadoc java-object-or-class-here)
Exit: Control+D or (exit) or (quit)
Results: Stored in vars *1, *2, *3, an exception in *e
user=>
出现 user=>
提示符说明已经成功运行 Clojuratica
交互环境,接下来运行我们的项目代码:
user=> (use 'mmaclj2.connect)
nil
user=>
返回 nil
说明成功加载,也就是说我们现在已经成功连接到 Mathematica
了,现在就可以执行一些实验操作了:
user=> (math (Plus 1 1))
2
user=> (math (FactorInteger 12345))
[[3 1] [5 1] [823 1]]
user=> (math
#_=> (Plus 1 1)
#_=> (FactorInteger 12345))
[[3 1] [5 1] [823 1]]
user=>
因为我对 Mathmetica
也不是特别熟悉,所以上面几个示范的例子也都是从官网教程拷贝过来的,所以如果希望更深入的使用,还是多看看官网的教程吧,
参考说明
作者:FreeBlues
本文地址:
:Clojuratica 安装配置指导: Clojure + Mathematica
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