Auto-generated commit

Author: stdlib-bot

.github/.keepalive

@@ -4,14 +4,37 @@
 
 <section class="release" id="unreleased">
 
-## Unreleased (2025-05-19)
+## Unreleased (2025-07-09)
+
+<section class="features">
+
+### Features
+
+-   [`719cc56`](https://github.com/stdlib-js/stdlib/commit/719cc56a839fc0e790c51a21621c8d71d27af5f8) - add support for accessor arrays and refactor `stats/base/nanstdevwd` [(#7590)](https://github.com/stdlib-js/stdlib/pull/7590)
+
+</section>
+
+<!-- /.features -->
+
+<section class="issues">
+
+### Closed Issues
+
+This release closes the following issue:
+
+[#5671](https://github.com/stdlib-js/stdlib/issues/5671)
+
+</section>
+
+<!-- /.issues -->
 
 <section class="commits">
 
 ### Commits
 
 <details>
 
+-   [`719cc56`](https://github.com/stdlib-js/stdlib/commit/719cc56a839fc0e790c51a21621c8d71d27af5f8) - **feat:** add support for accessor arrays and refactor `stats/base/nanstdevwd` [(#7590)](https://github.com/stdlib-js/stdlib/pull/7590) _(by Gururaj Gurram)_
 -   [`e6caafc`](https://github.com/stdlib-js/stdlib/commit/e6caafc261076eba2325f589f094c8264ba6d8b2) - **refactor:** update paths _(by Aayush Khanna)_
 
 </details>
@@ -24,9 +47,10 @@
 
 ### Contributors
 
-A total of 1 person contributed to this release. Thank you to this contributor:
+A total of 2 people contributed to this release. Thank you to the following contributors:
 
 -   Aayush Khanna
+-   Gururaj Gurram
 
 </section>
 

CHANGELOG.md

@@ -21,10 +21,14 @@ Ali Salesi <ali_sal1381@yahoo.com>
 AlyAbdelmoneim <148393799+AlyAbdelmoneim@users.noreply.github.com>
 Aman Bhansali <bhansali.1@iitj.ac.in>
 AmanBhadkariya <140033975+AmanBhadkariya@users.noreply.github.com>
+Amisha Chhajed <136238836+amishhaa@users.noreply.github.com>
 Amit Jimiwal <amitjimiwal45@gmail.com>
+Annamalai Prabu <apfossdev@gmail.com>
 Anshu Kumar <132515490+anxhukumar@users.noreply.github.com>
 Anshu Kumar <contact.anshukumar@protonmail.com>
 Anudeep Sanapala <anudeep0306@gmail.com>
+Arihant Pal <arihant0pal@gmail.com>
+Aryan Bhirud <112156883+AryanBhirud@users.noreply.github.com>
 Athan Reines <kgryte@gmail.com>
 Ayaka <73595362+USERSATOSHI@users.noreply.github.com>
 Bhavishy Agrawal <90029607+bhavishy2801@users.noreply.github.com>
@@ -34,10 +38,12 @@ Bryan Elee <rxbryn@gmail.com>
 Chinmay Joshi <86140365+JawHawk@users.noreply.github.com>
 Christopher Dambamuromo <chridam@gmail.com>
 Dan Rose <danoftheroses@gmail.com>
+Daniel Hernandez Gomez <156333015+dhernandeez13@users.noreply.github.com>
 Daniel Killenberger <daniel.killenberger@gmail.com>
 Daniel Yu <40680511+Daniel777y@users.noreply.github.com>
 Debashis Maharana <debashismaharana7854@gmail.com>
 Deep Trivedi <128926685+thedeeppp@users.noreply.github.com>
+Deepak Singh <78257493+Deepak91168@users.noreply.github.com>
 Desh Deepak Kant <118960904+DeshDeepakKant@users.noreply.github.com>
 Dev Goel <135586571+corsairier@users.noreply.github.com>
 Dhanyabad behera <110620935+dhanyabad11@users.noreply.github.com>
@@ -53,11 +59,13 @@ Frank Kovacs <fran70kk@gmail.com>
 GK Bishnoi <gkishan1kyt@gmail.com>
 GURU PRASAD SHARMA <168292003+GURUPRASADSHARMA@users.noreply.github.com>
 Gaurav <gaurav70380@gmail.com>
+Gautam Kaushik <162317291+Kaushikgtm@users.noreply.github.com>
 Gautam sharma <gautamkrishnasharma1@gmail.com>
 Girish Garg <garggirish2020@gmail.com>
 Golden Kumar <103646877+AuenKr@users.noreply.github.com>
 Gunj Joshi <gunjjoshi8372@gmail.com>
 Gururaj Gurram <gururajgurram1512@gmail.com>
+Harishchandra Reddy <harish.7000@gmail.com>
 Haroon Rasheed <51189276+haroon26@users.noreply.github.com>
 Harsh <harshyadav6078@gmail.com>
 HarshaNP <96897754+GittyHarsha@users.noreply.github.com>
@@ -80,6 +88,7 @@ Joris Labie <joris.labie1@gmail.com>
 Justin Dennison <justin1dennison@gmail.com>
 Justyn Shelby <96994781+ShelbyJustyn@users.noreply.github.com>
 Karan Anand <anandkarancompsci@gmail.com>
+Karan Vasudevamurthy <karanlvm123@gmail.com>
 Karan Yadav <77043443+karanBRAVO@users.noreply.github.com>
 Karthik Prakash <116057817+skoriop@users.noreply.github.com>
 Kaushikgtm <162317291+Kaushikgtm@users.noreply.github.com>
@@ -89,6 +98,7 @@ Krishnam Agarwal <83017176+888krishnam@users.noreply.github.com>
 Krishnendu Das <86651039+itskdhere@users.noreply.github.com>
 Kshitij-Dale <152467202+Kshitij-Dale@users.noreply.github.com>
 Lalit Narayan Yadav <162928571+LalitNarayanYadav@users.noreply.github.com>
+Lokesh Ranjan <lokesh.ranjan.phe23@itbhu.ac.in>
 Lovelin Dhoni J B <100030865+lovelindhoni@users.noreply.github.com>
 MANI <77221000+Eternity0207@users.noreply.github.com>
 Mahfuza Humayra Mohona <mhmohona@gmail.com>
@@ -117,6 +127,7 @@ Ognjen Jevremović <ognjenjevremovic@users.noreply.github.com>
 Oneday12323 <107678750+Oneday12323@users.noreply.github.com>
 Ori Miles <97595296+orimiles5@users.noreply.github.com>
 Philipp Burckhardt <pburckhardt@outlook.com>
+Pierre Forstmann <15964998+pierreforstmann@users.noreply.github.com>
 Prajjwal Bajpai <142303989+prajjwalbajpai@users.noreply.github.com>
 Prajwal Kulkarni <prajwalkulkarni76@gmail.com>
 Pranav Goswami <pranavchiku11@gmail.com>
@@ -146,6 +157,7 @@ Ryan Seal <splrk@users.noreply.github.com>
 Rylan Yang <137365285+rylany27@users.noreply.github.com>
 SAHIL KUMAR <168997976+sahilk45@users.noreply.github.com>
 SHIVAM YADAV <120725381+Shivam-1827@users.noreply.github.com>
+Sachin Raj <120590207+schnrj@users.noreply.github.com>
 Sahil Goyal <87982509+sahil20021008@users.noreply.github.com>
 Sai Avinash <120403424+nasarobot@users.noreply.github.com>
 Sai Srikar Dumpeti <80447788+the-r3aper7@users.noreply.github.com>
@@ -166,10 +178,14 @@ Spandan Barve <contact@marsian.dev>
 Stephannie Jiménez Gacha <steff456@hotmail.com>
 Suhaib Ilahi <suhaib.elahi87@gmail.com>
 Suraj Kumar <125961509+kumarsuraj212003@users.noreply.github.com>
+Swapnil Hajare <69076366+Swapnil-2502@users.noreply.github.com>
 Tanishq Ahuja <68651083+TheGEN1U5@users.noreply.github.com>
 Tirtadwipa Manunggal <tirtadwipa.manunggal@gmail.com>
 Tudor Pagu <104032457+tudor-pagu@users.noreply.github.com>
 Tufailahmed Bargir <142114244+Tufailahmed-Bargir@users.noreply.github.com>
+Tushar Bhardwaj <155543597+TusharBhardwaj441@users.noreply.github.com>
+Uday Kakade <141299403+udaykakade25@users.noreply.github.com>
+Ujjwal Kirti <64329707+ujjwalkirti@users.noreply.github.com>
 Utkarsh <http://utkarsh11105@gmail.com>
 Utkarsh Raj <rajutkarsh2505@gmail.com>
 UtkershBasnet <119008923+UtkershBasnet@users.noreply.github.com>
@@ -183,11 +199,13 @@ Yaswanth Kosuru <116426380+yaswanthkosuru@users.noreply.github.com>
 Yernar Yergaziyev <yernar.yergaziyev@erg.kz>
 Yugal Kaushik <yugalkaushik14@gmail.com>
 Yuvi Mittal <128018763+yuvi-mittal@users.noreply.github.com>
+deepak427 <62477872+deepak427@users.noreply.github.com>
 devshree-bhati <147095250+devshree-bhati@users.noreply.github.com>
 ditsu <170345142+ditsus@users.noreply.github.com>
 ekambains <bainsinbusiness@gmail.com>
 fadiothman22 <48636283+fadiothman22@users.noreply.github.com>
 iraandrushko <71790513+iraandrushko@users.noreply.github.com>
+jsai28 <54253219+jsai28@users.noreply.github.com>
 lohithganni <116790357+lohithganni@users.noreply.github.com>
 olenkabilonizhka <62379231+olenkabilonizhka@users.noreply.github.com>
 pranav-1720 <123018993+pranav-1720@users.noreply.github.com>

CONTRIBUTORS

@@ -131,9 +131,9 @@ To view installation and usage instructions specific to each branch build, be su
 var nanstdevwd = require( '@stdlib/stats-base-nanstdevwd' );
 ```
 
-#### nanstdevwd( N, correction, x, stride )
+#### nanstdevwd( N, correction, x, strideX )
 
-Computes the [standard deviation][standard-deviation] of a strided array `x` ignoring `NaN` values and using Welford's algorithm.
+Computes the [standard deviation][standard-deviation] of a strided array ignoring `NaN` values and using Welford's algorithm.
 
 ```javascript
 var x = [ 1.0, -2.0, NaN, 2.0 ];
@@ -147,38 +147,32 @@ The function has the following parameters:
 -   **N**: number of indexed elements.
 -   **correction**: degrees of freedom adjustment. Setting this parameter to a value other than `0` has the effect of adjusting the divisor during the calculation of the [standard deviation][standard-deviation] according to `N-c` where `c` corresponds to the provided degrees of freedom adjustment. When computing the [standard deviation][standard-deviation] of a population, setting this parameter to `0` is the standard choice (i.e., the provided array contains data constituting an entire population). When computing the corrected sample [standard deviation][standard-deviation], setting this parameter to `1` is the standard choice (i.e., the provided array contains data sampled from a larger population; this is commonly referred to as Bessel's correction).
 -   **x**: input [`Array`][mdn-array] or [`typed array`][mdn-typed-array].
--   **stride**: index increment for `x`.
+-   **strideX**: stride length for `x`.
 
 The `N` and `stride` parameters determine which elements in `x` are accessed at runtime. For example, to compute the [standard deviation][standard-deviation] of every other element in `x`,
 
 ```javascript
-var floor = require( '@stdlib/math-base-special-floor' );
-
 var x = [ 1.0, 2.0, 2.0, -7.0, -2.0, 3.0, 4.0, 2.0, NaN ];
-var N = floor( x.length / 2 );
 
-var v = nanstdevwd( N, 1, x, 2 );
+var v = nanstdevwd( 5, 1, x, 2 );
 // returns 2.5
 ```
 
 Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
 
-<!-- eslint-disable stdlib/capitalized-comments -->
+<!-- eslint-disable stdlib/capitalized-comments, max-len -->
 
 ```javascript
 var Float64Array = require( '@stdlib/array-float64' );
-var floor = require( '@stdlib/math-base-special-floor' );
 
-var x0 = new Float64Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, NaN ] );
+var x0 = new Float64Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, NaN, NaN ] );
 var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
 
-var N = floor( x0.length / 2 );
-
-var v = nanstdevwd( N, 1, x1, 2 );
+var v = nanstdevwd( 5, 1, x1, 2 );
 // returns 2.5
 ```
 
-#### nanstdevwd.ndarray( N, correction, x, stride, offset )
+#### nanstdevwd.ndarray( N, correction, x, strideX, offsetX )
 
 Computes the [standard deviation][standard-deviation] of a strided array ignoring `NaN` values and using Welford's algorithm and alternative indexing semantics.
 
@@ -191,17 +185,14 @@ var v = nanstdevwd.ndarray( x.length, 1, x, 1, 0 );
 
 The function has the following additional parameters:
 
--   **offset**: starting index for `x`.
+-   **offsetX**: starting index for `x`.
 
-While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying `buffer`, the `offset` parameter supports indexing semantics based on a starting index. For example, to calculate the [standard deviation][standard-deviation] for every other value in `x` starting from the second value
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to calculate the [standard deviation][standard-deviation] for every other element in `x` starting from the second element
 
 ```javascript
-var floor = require( '@stdlib/math-base-special-floor' );
+var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, NaN, NaN ];
 
-var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ];
-var N = floor( x.length / 2 );
-
-var v = nanstdevwd.ndarray( N, 1, x, 2, 1 );
+var v = nanstdevwd.ndarray( 5, 1, x, 2, 1 );
 // returns 2.5
 ```
 
@@ -215,6 +206,7 @@ var v = nanstdevwd.ndarray( N, 1, x, 2, 1 );
 
 -   If `N <= 0`, both functions return `NaN`.
 -   If `n - c` is less than or equal to `0` (where `c` corresponds to the provided degrees of freedom adjustment and `n` corresponds to the number of non-`NaN` indexed elements), both functions return `NaN`.
+-   Both functions support array-like objects having getter and setter accessors for array element access (e.g., [`@stdlib/array-base/accessor`][@stdlib/array/base/accessor]).
 -   Depending on the environment, the typed versions ([`dnanstdevwd`][@stdlib/stats/strided/dnanstdevwd], [`snanstdevwd`][@stdlib/stats/base/snanstdevwd], etc.) are likely to be significantly more performant.
 
 </section>
@@ -228,18 +220,19 @@ var v = nanstdevwd.ndarray( N, 1, x, 2, 1 );
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var randu = require( '@stdlib/random-base-randu' );
-var round = require( '@stdlib/math-base-special-round' );
-var Float64Array = require( '@stdlib/array-float64' );
+var uniform = require( '@stdlib/random-base-uniform' );
+var filledarrayBy = require( '@stdlib/array-filled-by' );
+var bernoulli = require( '@stdlib/random-base-bernoulli' );
 var nanstdevwd = require( '@stdlib/stats-base-nanstdevwd' );
 
-var x;
-var i;
-
-x = new Float64Array( 10 );
-for ( i = 0; i < x.length; i++ ) {
-    x[ i ] = round( (randu()*100.0) - 50.0 );
+function rand() {
+    if ( bernoulli( 0.8 ) < 1 ) {
+        return NaN;
+    }
+    return uniform( -50.0, 50.0 );
 }
+
+var x = filledarrayBy( 10, 'float64', rand );
 console.log( x );
 
 var v = nanstdevwd( x.length, 1, x, 1 );
@@ -359,6 +352,8 @@ Copyright &copy; 2016-2025. The Stdlib [Authors][stdlib-authors].
 
 [mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
 
+[@stdlib/array/base/accessor]: https://github.com/stdlib-js/array-base-accessor
+
 [@welford:1962a]: https://doi.org/10.1080/00401706.1962.10490022
 
 [@vanreeken:1968a]: https://doi.org/10.1145/362929.362961

README.md

@@ -21,15 +21,30 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench-harness' );
-var randu = require( '@stdlib/random-base-randu' );
+var uniform = require( '@stdlib/random-base-uniform' );
+var bernoulli = require( '@stdlib/random-base-bernoulli' );
+var filledarrayBy = require( '@stdlib/array-filled-by' );
 var isnan = require( '@stdlib/math-base-assert-is-nan' );
 var pow = require( '@stdlib/math-base-special-pow' );
 var pkg = require( './../package.json' ).name;
-var nanstdevwd = require( './../lib/nanstdevwd.js' );
+var nanstdevwd = require( './../lib/main.js' );
 
 
 // FUNCTIONS //
 
+/**
+* Returns a random number.
+*
+* @private
+* @returns {number} random number
+*/
+function rand() {
+	if ( bernoulli( 0.8 ) < 1 ) {
+		return NaN;
+	}
+	return uniform( -10.0, 10.0 );
+}
+
 /**
 * Creates a benchmark function.
 *
@@ -38,17 +53,7 @@ var nanstdevwd = require( './../lib/nanstdevwd.js' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
-	var x;
-	var i;
-
-	x = [];
-	for ( i = 0; i < len; i++ ) {
-		if ( randu() < 0.2 ) {
-			x.push( NaN );
-		} else {
-			x.push( ( randu()*20.0 ) - 10.0 );
-		}
-	}
+	var x = filledarrayBy( len, 'generic', rand );
 	return benchmark;
 
 	function benchmark( b ) {

benchmark/benchmark.js

@@ -21,7 +21,9 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench-harness' );
-var randu = require( '@stdlib/random-base-randu' );
+var uniform = require( '@stdlib/random-base-uniform' );
+var bernoulli = require( '@stdlib/random-base-bernoulli' );
+var filledarrayBy = require( '@stdlib/array-filled-by' );
 var isnan = require( '@stdlib/math-base-assert-is-nan' );
 var pow = require( '@stdlib/math-base-special-pow' );
 var pkg = require( './../package.json' ).name;
@@ -30,6 +32,19 @@ var nanstdevwd = require( './../lib/ndarray.js' );
 
 // FUNCTIONS //
 
+/**
+* Returns a random number.
+*
+* @private
+* @returns {number} random number
+*/
+function rand() {
+	if ( bernoulli( 0.8 ) < 1 ) {
+		return NaN;
+	}
+	return uniform( -10.0, 10.0 );
+}
+
 /**
 * Creates a benchmark function.
 *
@@ -38,17 +53,7 @@ var nanstdevwd = require( './../lib/ndarray.js' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
-	var x;
-	var i;
-
-	x = [];
-	for ( i = 0; i < len; i++ ) {
-		if ( randu() < 0.2 ) {
-			x.push( NaN );
-		} else {
-			x.push( ( randu()*20.0 ) - 10.0 );
-		}
-	}
+	var x = filledarrayBy( len, 'generic', rand );
 	return benchmark;
 
 	function benchmark( b ) {