StandardDeviation (Arraylist function) - Revision history

JAL2 at 16:48, 27 July 2012

2012-07-27T16:48:32Z

← Older revision		Revision as of 16:48, 27 July 2012
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	<td>An <var>Arraylist</var> object.</td></tr>		<td>An <var>Arraylist</var> object.</td></tr>

	<tr><th>~~method~~</th>		<tr><th>itemFunction</th>
	<td>A function that operates on the type of the items in the <var>Arraylist</var>. It may be a [[Local and Common entities#Defining and invoking a local method\|local method]] or [[Method variables\|method variable]] or a class member (<var>Variable</var>, <var>Property</var>), and it must return an [[Intrinsic classes\|intrinsic]] (probably <var>Float</var>) value.		<td>A function that operates on the type of the items in the <var>Arraylist</var>. It may be a [[Local and Common entities#Defining and invoking a local method\|local method]] or [[Method variables\|method variable]] or a class member (<var>Variable</var>, <var>Property</var>), and it must return an [[Intrinsic classes\|intrinsic]] (probably <var>Float</var>) value.
	<p>		<p>
	The default <var class="term">~~method~~</var> value is the special identity function, <var>[[Collections#Using the This function as the Maximum parameter\|This]]</var>, which simply returns the item value.</p></td></tr>		The default <var class="term">itemFunction</var> value is the special identity function, <var>[[Collections#Using the This function as the Maximum parameter\|This]]</var>, which simply returns the item value.</p></td></tr>
	</table>		</table>

	==Usage notes==		==Usage notes==
	<ul>		<ul>
	<li>The optional <var class="term">~~method~~</var> parameter lets you further manipulate the <var>Arraylist</var> item values		<li>The optional <var class="term">itemFunction</var> parameter lets you further manipulate the <var>Arraylist</var> item values
	before calculating the standard deviation. The <var class="term">~~method~~</var> default (identity function <var>This</var>) fails against non-intrinsic values, however. If your collection items are <i>not</i> intrinsic values, you must specify an <var class="term">~~method~~</var> function that can map the item values to intrinsic values.		before calculating the standard deviation. The <var class="term">itemFunction</var> default (identity function <var>This</var>) fails against non-intrinsic values, however. If your collection items are <i>not</i> intrinsic values, you must specify an <var class="term">itemFunction</var> function that can map the item values to intrinsic values.
	<p>		<p>
	For example, for an <var>Arraylist</var> that is a list of coordinates, you could		For example, for an <var>Arraylist</var> that is a list of coordinates, you could
	return the average of their distance from the origin by first applying a local function as the <var>StandardDeviation</var> method's <var class="term">~~method~~</var> parameter: </p>		return the average of their distance from the origin by first applying a local function as the <var>StandardDeviation</var> method's <var class="term">itemFunction</var> parameter: </p>
	<p class="code">b		<p class="code">b
	class point		class point

JAL2: /* Syntax terms */

2012-07-19T15:26:46Z

Syntax terms

← Older revision		Revision as of 15:26, 19 July 2012
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	<td>A function that operates on the type of the items in the <var>Arraylist</var>. It may be a [[Local and Common entities#Defining and invoking a local method\|local method]] or [[Method variables\|method variable]] or a class member (<var>Variable</var>, <var>Property</var>), and it must return an [[Intrinsic classes\|intrinsic]] (probably <var>Float</var>) value.		<td>A function that operates on the type of the items in the <var>Arraylist</var>. It may be a [[Local and Common entities#Defining and invoking a local method\|local method]] or [[Method variables\|method variable]] or a class member (<var>Variable</var>, <var>Property</var>), and it must return an [[Intrinsic classes\|intrinsic]] (probably <var>Float</var>) value.
	<p>		<p>
	The default <var class="term">method</var> value is the special identity function, <var>This</var>, which simply returns the item value.</p></td></tr>		The default <var class="term">method</var> value is the special identity function, <var>[[Collections#Using the This function as the Maximum parameter\|This]]</var>, which simply returns the item value.</p></td></tr>
	</table>		</table>

JAL2: /* Usage notes */

2012-07-19T15:22:28Z

Usage notes

← Older revision		Revision as of 15:22, 19 July 2012
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	<ul>		<ul>
	<li>The optional <var class="term">method</var> parameter lets you further manipulate the <var>Arraylist</var> item values		<li>The optional <var class="term">method</var> parameter lets you further manipulate the <var>Arraylist</var> item values
	before ~~performing~~ the <var>~~StandardDeviation~~</var> ~~method's operation.~~		before calculating the standard deviation. The <var class="term">method</var> default (identity function <var>This</var>) fails against non-intrinsic values, however. If your collection items are <i>not</i> intrinsic values, you must specify an <var class="term">method</var> function that can map the item values to intrinsic values.
	~~If your~~ <var>~~Arraylist~~</var>'s items are not intrinsic values, you must specify a function that can map the item values to intrinsic values ~~or the method will fail~~.
	<p>		<p>
	For example, for an <var>Arraylist</var> that is a list of coordinates, you could		For example, for an <var>Arraylist</var> that is a list of coordinates, you could

JAL2: /* Examples */

2012-07-12T21:41:42Z

Examples

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	%al = new		%al = new
	%al~~:add~~(5)		%al = [[List (Arraylist function)\|list]](5, 3, 8)
	~~%al:add~~(3)
	~~%al:add(~~8)

	print %al:standardDeviation		print %al:standardDeviation

JAL2 at 21:22, 12 July 2012

2012-07-12T21:22:16Z

← Older revision		Revision as of 21:22, 12 July 2012
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	{{Template:Arraylist:StandardDeviation subtitle}}		{{Template:Arraylist:StandardDeviation subtitle}}

	This method returns the standard deviation, the variation from the mean, of the values of the items in the <var>Arraylist</var>. This is the square root of the <var>Arraylist</var>'s variance.		This method returns the standard deviation, the variation from the mean, of the values of the items in the <var>Arraylist</var>. This is the square root of the <var>Arraylist</var>'s [[Variance (Arraylist function)\|variance]].

	==Syntax==		==Syntax==

JAL2 at 20:49, 12 July 2012

2012-07-12T20:49:12Z

← Older revision		Revision as of 20:49, 12 July 2012
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	{{Template:Arraylist:StandardDeviation subtitle}}		{{Template:Arraylist:StandardDeviation subtitle}}

	This method returns the standard deviation, the variation from the mean, of the values of the items in the ~~collection~~. This is the square root of the ~~collection~~'s variance.		This method returns the standard deviation, the variation from the mean, of the values of the items in the <var>Arraylist</var>. This is the square root of the <var>Arraylist</var>'s variance.

	==Syntax==		==Syntax==

JAL2 at 21:40, 10 July 2012

2012-07-10T21:40:18Z

@@ Line 1: / Line 1: @@
 {{Template:Arraylist:StandardDeviation subtitle}}
-This page is [[under construction]].
+This method returns the standard deviation, the variation from the mean, of the values of the items in the collection. This is the square root of the collection's variance.
 ==Syntax==
 {{Template:Arraylist:StandardDeviation syntax}}
 ===Syntax terms===
 <table class="syntaxTable">
-<tr><th>%standardDev</th><td>number</td></tr>
+<tr><th>%standardDev</th>
 <tr><th>al</th>
-<td>Arraylist object</td></tr>
+<td>An <var>Arraylist</var> object.</td></tr>
 <tr><th>method</th>
-<td><var>ItemFunction</var> object</td></tr>
+<td>A function that operates on the type of the items in the <var>Arraylist</var>. It may be a [[Local and Common entities#Defining and invoking a local method|local method]] or [[Method variables|method variable]] or a class member (<var>Variable</var>, <var>Property</var>), and it must return an [[Intrinsic classes|intrinsic]] (probably <var>Float</var>) value.
 </table>
 ==Usage notes==
 ==Examples==
 ==See also==
 {{Template:Arraylist:StandardDeviation footer}}

JALWiccan: Automatically generated page update

2012-07-10T21:31:36Z

Automatically generated page update

New page

{{Template:Arraylist:StandardDeviation subtitle}}

This page is [[under construction]].
==Syntax==
{{Template:Arraylist:StandardDeviation syntax}}
===Syntax terms===
<table class="syntaxTable">
<tr><th>%standardDev</th><td>number</td></tr>
<tr><th>al</th>
<td>Arraylist object</td></tr>
<tr><th>method</th>
<td><var>ItemFunction</var> object</td></tr>
</table>
==Usage notes==
==Examples==
==See also==
{{Template:Arraylist:StandardDeviation footer}}