feat: add plot/vega/scale/quantile

lib/node_modules/@stdlib/plot/vega/scale/quantile/examples/index.js

@@ -0,0 +1,27 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var DiscretizingScale = require( './../lib' );
+
+var scale = new DiscretizingScale({
+	'name': 'colorScale'
+});
+
+console.log( scale.toJSON() );

lib/node_modules/@stdlib/plot/vega/scale/quantile/lib/index.js

@@ -0,0 +1,42 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Quantile scale constructor.
+*
+* @module @stdlib/plot/vega/scale/quantile
+*
+* @example
+* var QuantileScale = require( '@stdlib/plot/vega/scale/quantile' );
+*
+* var scale = new QuantileScale({
+*     'name': 'colorScale'
+* });
+* // returns <QuantileScale>
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;

lib/node_modules/@stdlib/plot/vega/scale/quantile/lib/main.js

@@ -0,0 +1,110 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var isObject = require( '@stdlib/assert/is-object' );
+var hasProp = require( '@stdlib/assert/has-property' );
+var setReadWriteAccessor = require( '@stdlib/utils/define-read-write-accessor' );
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var inherit = require( '@stdlib/utils/inherit' );
+var DiscretizingScale = require( '@stdlib/plot/vega/scale/discretizing' );
+var format = require( '@stdlib/string/format' );
+var TYPE = require( './type/type.js' );
+var getType = require( './type/get.js' );
+var setType = require( './type/set.js' );
+
+
+// MAIN //
+
+/**
+* Quantile scale constructor.
+*
+* @constructor
+* @param {Options} options - constructor options
+* @param {string} options.name - scale name
+* @param {(Collection|Object|Signal)} [options.domain] - domain of associated data values
+* @param {Collection} [options.domainRaw] - array of raw domain values which overrides the `domain` property
+* @param {(string|Object)} [options.interpolate] - scale range interpolation method
+* @param {(Collection|Object|Signal|string)} [options.range] - scale range
+* @param {boolean} [options.reverse=false] - boolean indicating whether to reverse the order of the scale range
+* @throws {TypeError} options argument must be an object
+* @throws {Error} must provide valid options
+* @returns {QuantileScale} scale instance
+*
+* @example
+* var scale = new QuantileScale({
+*     'name': 'colorScale'
+* });
+* // returns <QuantileScale>
+*/
+function QuantileScale( options ) {
+	if ( !( this instanceof QuantileScale ) ) {
+		return new QuantileScale( options );
+	}
+	if ( !isObject( options ) ) {
+		throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+	}
+	if ( hasProp( options, 'type' ) && options.type !== TYPE ) {
+		throw new TypeError( format( 'invalid argument. `%s` option must be equal to "%s". Option: `%s`.', 'type', TYPE, options.type ) );
+	}
+	DiscretizingScale.call( this, options );
+	this._type = TYPE;
+	return this;
+}
+
+/*
+* Inherit from a parent prototype.
+*/
+inherit( QuantileScale, DiscretizingScale );
+
+/**
+* Constructor name.
+*
+* @private
+* @name name
+* @memberof QuantileScale
+* @readonly
+* @type {string}
+*/
+setReadOnly( QuantileScale, 'name', 'QuantileScale' );
+
+/**
+* Scale type.
+*
+* @name type
+* @memberof QuantileScale.prototype
+* @type {string}
+* @default 'quantile'
+*
+* @example
+* var scale = new QuantileScale({
+*     'name': 'colorScale'
+* });
+*
+* var v = scale.type;
+* // returns 'quantile'
+*/
+setReadWriteAccessor( QuantileScale.prototype, 'type', getType, setType );
+
+
+// EXPORTS //
+
+module.exports = QuantileScale;

lib/node_modules/@stdlib/plot/vega/scale/quantile/lib/type/get.js

@@ -0,0 +1,41 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var TYPE = require( './type.js' );
+
+
+// MAIN //
+
+/**
+* Returns the scale type.
+*
+* @private
+* @returns {string} scale type
+*/
+function get() {
+	return TYPE;
+}
+
+
+// EXPORTS //
+
+module.exports = get;

lib/node_modules/@stdlib/plot/vega/scale/quantile/lib/type/set.js

@@ -0,0 +1,46 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var format = require( '@stdlib/string/format' );
+var TYPE = require( './type.js' );
+
+
+// MAIN //
+
+/**
+* Sets the scale type.
+*
+* @private
+* @param {string} value - input value
+* @throws {TypeError} must be a valid scale
+* @returns {void}
+*/
+function set( value ) {
+	if ( value !== TYPE ) {
+		throw new TypeError( format( 'invalid assignment. `%s` must be equal to "%s". Value: `%s`.', 'type', TYPE, value ) );
+	}
+}
+
+
+// EXPORTS //
+
+module.exports = set;

lib/node_modules/@stdlib/plot/vega/scale/quantile/lib/type/type.js

@@ -0,0 +1,23 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// EXPORTS //
+
+module.exports = 'quantile';

lib/node_modules/@stdlib/plot/vega/scale/quantile/package.json

@@ -0,0 +1,63 @@
+{
+  "name": "@stdlib/plot/vega/scale/quantile",
+  "version": "0.0.0",
+  "description": "Quantile scale constructor.",
+  "license": "Apache-2.0",
+  "author": {
+    "name": "The Stdlib Authors",
+    "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+  },
+  "contributors": [
+    {
+      "name": "The Stdlib Authors",
+      "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+    }
+  ],
+  "main": "./lib",
+  "directories": {
+    "benchmark": "./benchmark",
+    "doc": "./docs",
+    "example": "./examples",
+    "lib": "./lib",
+    "test": "./test"
+  },
+  "types": "./docs/types",
+  "scripts": {},
+  "homepage": "https://github.com/stdlib-js/stdlib",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/stdlib-js/stdlib.git"
+  },
+  "bugs": {
+    "url": "https://github.com/stdlib-js/stdlib/issues"
+  },
+  "dependencies": {},
+  "devDependencies": {},
+  "engines": {
+    "node": ">=0.10.0",
+    "npm": ">2.7.0"
+  },
+  "os": [
+    "aix",
+    "darwin",
+    "freebsd",
+    "linux",
+    "macos",
+    "openbsd",
+    "sunos",
+    "win32",
+    "windows"
+  ],
+  "keywords": [
+    "stdlib",
+    "plot",
+    "vega",
+    "scale",
+    "discrete",
+    "categorical",
+    "quantile",
+    "constructor",
+    "ctor"
+  ],
+  "__stdlib__": {}
+}