updated minimum, maximum

docs/utility-methods.md

@@ -18,10 +18,12 @@ const Util = require('total-serialism').Utility;
 - subtract
 - multiply
 - divide
+- mod
 - sum
 - minimum
 - maximum
 - normalize
+- flatten
 - plot
 - draw
 
@@ -85,6 +87,11 @@ Return the minimum value from an array (Also part of `.Statistic`)
 ```js
 Util.minimum([-38, -53, -6, 33, 88, 32, -8, 73]);
 //=> -53 
+
+// Also works with n-dimensional arrays
+Stat.minimum([-38, [-53, [-6, 33], 88, 32], [-8, 73]]);
+//=> -53 
+
 // Alternative: Util.min()
 ```
 
@@ -95,6 +102,11 @@ Return the maximum value from an array (Also part of `.Statistic`)
 ```js
 Util.maximum([-38, -53, -6, 33, 88, 32, -8, 73]);
 //=> 88 
+
+// Also works with n-dimensional arrays
+Stat.maximum([-38, [-53, [-6, 33], 88, 32], [-8, 73]]);
+//=> 88 
+
 // Alternative: Util.max()
 ```
 
@@ -115,6 +127,19 @@ Util.normalize([5, 12, 4, 17, 3]);
 //=> [ 0.14285714285714285, 0.6428571428571429, 0.07142857142857142, 1, 0 ] 
 ```
 
+## flatten
+
+Flatten a multidimensional array to a single dimension. Optionally set the depth for the flattening.
+
+**arguments**
+- {Array} -> array to flatten
+- {Number} -> depth of flatten
+
+```js 
+Util.flatten([1, [2, 3, [4, 5], 6], 7]);
+// => [ 1, 2, 3, 4, 5, 6, 7 ]
+```
+
 ## plot
 
 Plot an array of values to the console in the form of an ascii chart and return chart from function. If you just want the chart returned as text and not log to console set { log: false }. Using the asciichart package by x84. 

src/transform.js

@@ -189,8 +189,8 @@ exports.tFilter = filterType;
 function invert(arr=[0], lo, hi){
 	arr = Array.isArray(arr)? arr : [arr];
 	if (lo === undefined){
-		hi = Math.max(...Util.flatten(arr));
-		lo = Math.min(...Util.flatten(arr));
+		hi = Util.max(arr);
+		lo = Util.max(arr);
 	} else if (hi === undefined){
 		hi = lo;
 	}

src/utility.js

@@ -356,11 +356,7 @@ exports.sum = sum;
 // 
 function maximum(a=[0]){
 	if (!Array.isArray(a)) { return a; }
-	let m = -Infinity;
-	for (let i in a){
-		m = (a[i] > Number(m))? a[i] : m;
-	}
-	return m;
+	return Math.max(...flatten(a));
 }
 exports.maximum = maximum;
 exports.max = maximum;
@@ -372,11 +368,7 @@ exports.max = maximum;
 // 
 function minimum(a=[0]){
 	if (!Array.isArray(a)) { return a; }
-	let m = Infinity;
-	for (let i in a){
-		m = (a[i] < Number(m))? a[i] : m;
-	}
-	return m;
+	return Math.min(...flatten(a));
 }
 exports.minimum = minimum;
 exports.min = minimum;

test/serialism.test.js

@@ -488,15 +488,16 @@ function testStat(){
 	test("Stat.maximum()");
 	test("Stat.maximum(10)");
 	test("Stat.maximum([-38, -53, -6, 33, 88, 32, -8, 73])");
+	test("Stat.maximum([-38, [-53, [-6, 33], 88, 32], [-8, 73]])");
 
 	test("Stat.minimum()");
 	test("Stat.minimum(10)");
 	test("Stat.minimum([-38, -53, -6, 33, 88, 32, -8, 73])");
-	test("Stat.minimum([-38, -53, -6, 'foo', 33, 'bar'])");
+	test("Stat.minimum([-38, [-53, [-6, 33], 88, 32], [-8, 73]])");
+	// test("Stat.minimum([-38, -53, -6, 'foo', 33, 'bar'])");
 
 	test("Stat.change()");
 	test("Stat.change(4)");
-	test("Stat.change(['foo', 'bar'])");
 	test("Stat.change([0, 3, 7, 0, 12, 9, 5, 7])");
 }