mathjs - npm Package Compare versions

Comparing version 0.2.0 to 0.3.0

CHANGELOG.md

@@ -5,2 +5,9 @@ # math.js changelog
 
+## 2013-03-09, version 0.3.0
+
+- Implemented Workspace
+- Implemented methods cot, csc, sec.
+- Implemented Array support for methods with one parameter.
+
+
 ## 2013-02-25, version 0.2.0
@@ -7,0 +14,0 @@

package.json

 {
     "name": "mathjs",
-    "version": "0.2.0",
+    "version": "0.3.0",
     "description": "An extensive math library for JavaScript and Node.js. Includes an advanced expression parser. Supports numbers, complex numbers, units, strings, and matrices. Contains a large set of functions and constants.",
@@ -36,3 +36,4 @@ "author": "Jos de Jong <[e-mail]>",
     "scripts": {
-        "prepublish": "jake"
+        "prepublish": "jake",
+        "test": "jake test"
     },
@@ -39,0 +40,0 @@ "main": "./math.js",

README.md

@@ -23,13 +23,14 @@ ![math.js](https://raw.github.com/josdejong/mathjs/master/img/mathjs.png)
 
-Math.js can be installed with [npm](https://npmjs.org/).
+Math.js can be installed with [npm](https://npmjs.org/):
 
     npm install mathjs
 
-Alternatively, the library can be downloaded from github:
-[math.js](https://raw.github.com/josdejong/mathjs/master/math.js), or minified:
-[math.min.js](https://raw.github.com/josdejong/mathjs/master/math.min.js).
+Alternatively, the latest stable version of math.js can be downloaded from github:
 
+- [math.js](https://raw.github.com/josdejong/mathjs/master/math.js)
+- [math.min.js](https://raw.github.com/josdejong/mathjs/master/math.min.js) (minified)
 
-## Use
 
+## Load
+
 ### Node.js
@@ -41,21 +42,6 @@
 ```js
-var math = require('mathjs'),
-    Complex = math.Complex,
-    Unit = math.Unit;
+var math = require('mathjs');
 
-// use methods and types available in the math object
-var a = math.sin(math.pi / 4);
-var b = math.pow(a, 2);
-console.log('sin(pi / 4) ^ 2 = ' + math.round(b, 3)); // 'sin(pi / 4) ^ 2 = 0.5'
-
-var c = new Complex(3, -4);
-var d = math.sqrt(c);
-console.log('sqrt(3 - 4i) = ' + d); // 'sqrt(3 - 4i) = 2 - i'
-
-var e = math.sqrt(-4);
-console.log('sqrt(-4) = ' + e); // 'sqrt(-4) = 2i'
-
-var f = new Unit(60, 'deg');
-var g = math.cos(f);
-console.log('cos(60 deg) = ' + math.round(g, 3)); // 'cos(60 deg) = 0.5'
+var a = math.sqrt(-4);
+console.log('a = ' + a);                // 'a = 2i'
 ```
@@ -75,8 +61,4 @@
     <script type="text/javascript">
-        // the math object is available here
-
         var a = math.sqrt(-4);
-        console.log('sqrt(-4) = ' + a);     // 'sqrt(-4) = 2i'
-
-        // ...
+        document.write('a = ' + a);     // 'a = 2i'
     </script>
@@ -87,3 +69,32 @@ </body>
 
+<!-- TODO: Describe how to load using require.js -->
 
+
+## Use
+
+Math.js can be used similar to Javascript's built-in Math library.
+
+```js
+var math = require('mathjs'),
+    Complex = math.Complex,
+    Unit = math.Unit;
+
+// use methods and types available in the math object
+var a = math.sin(math.pi / 4);
+var b = math.pow(a, 2);
+console.log('b = ' + math.round(b, 3)); // 'b = 0.5'
+
+var c = new Complex(3, -4);
+var d = math.sqrt(c);
+console.log('d = ' + d);                // 'd = 2 - i'
+
+var e = math.sqrt(-4);
+console.log('e = ' + e);                // 'e = 2i'
+
+var f = new Unit(60, 'deg');
+var g = math.cos(f);
+console.log('g = ' + math.round(g, 3)); // 'g = 0.5'
+```
+
+
 ## Parser
@@ -101,2 +112,3 @@
 ```js
+// load math.js
 var math = require('mathjs');
@@ -109,5 +121,5 @@
 var a = parser.eval('sqrt(3^2 + 4^2)'); // 5
-var d = parser.eval('sqrt(-4)');        // 2i
-var b = parser.eval('2 inch in cm');    // 5.08 cm
-var c = parser.eval('cos(45 deg)');     // 0.7071067811865476
+var b = parser.eval('sqrt(-4)');        // 2i
+var c = parser.eval('2 inch in cm');    // 5.08 cm
+var d = parser.eval('cos(45 deg)');     // 0.7071067811865476
 
@@ -135,2 +147,51 @@ // define variables and functions
 
+Available methods:
+
+    var result = parser.eval(expr);    // evaluate an expression
+    var value = parser.get(name);      // retrieve a variable from the parser
+    parser.put(name, value);           // put a variable in the parser
+
+    var node = parser.parse(expr);     // parse an expression into a node tree
+    var result = node.eval();          // evaluate a node
+
+
+## Workspace
+
+Math.js features a workspace, which manages a set of expressions.
+Expressions can be added, replace, deleted, and inserted in the workspace.
+The workspace keeps track on the dependencies between the expressions,
+and automatically updates results of depending expressions when variables
+or function definitions are changed in the workspace.
+
+```js
+// load math.js
+var math = require('mathjs');
+
+// create a new workspace
+var workspace = new math.parser.Workspace();
+
+// add expressions to the workspace
+var id0 = workspace.append('a = 3/4');
+var id1 = workspace.append('a + 2');
+console.log('a + 2 = ' + workspace.getResult(id1));
+
+// replace expressions in the workspace
+workspace.replace('a=5/2', id0);
+console.log('a + 2 = ' + workspace.getResult(id1));
+```
+
+Available methods:
+
+    var id = workspace.append(expr);
+    var id = workspace.insertBefore(expr, beforeId);
+    var id = workspace.insertAfter(expr, afterId);
+    workspace.replace(expr, id);
+    workspace.remove(id);
+    workspace.clear();
+    var expr    = workspace.getExpr(id);
+    var result  = workspace.getResult(id);
+    var deps    = workspace.getDependencies(id);
+    var changes = workspace.getChanges(updateSeq);
+
+
 ## Data types
@@ -266,2 +327,5 @@
 - math.cos(x)
+- math.cot(x)
+- math.csc(x)
+- math.sec(x)
 - math.sin(x)
@@ -348,2 +412,9 @@ - math.tan(x)
 
+## Test
+
+To execute tests for the library, run:
+
+    npm test
+
+
 ## Roadmap
@@ -359,7 +430,8 @@
     - Implement Workspace
+    - Implement more methods
+- Build a website
+- Version 0.4.0:
+    - Implement Arrays and Matrices
+- Version 1.0.0
     - Extensive testing
-    - Build a website
-- Version 0.4.0: Implement Arrays and Matrices
-- Version 0.5.0: Implement more methods
-- ...
 
@@ -366,0 +438,0 @@

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Improved metrics

Total package byte prevSize

262293

increased by13.72%

Lines of code

5968

increased by13.55%

Number of lines in readme file

444

increased by19.35%

No dependency changes