update index.js

Signed-off-by: Harsh <[email protected]>

Author: hrshya

lib/node_modules/@stdlib/stats/incr/nanmape/examples/index.js

@@ -18,7 +18,8 @@
 
 'use strict';
 
-var randu = require( '@stdlib/random/base/randu' );
+var bernoulli = require( '@stdlib/random/base/bernoulli' );
+var uniform = require( '@stdlib/random/base/uniform' );
 var incrnanmape = require( './../lib' );
 
 var accumulator;
@@ -33,13 +34,8 @@ accumulator = incrnanmape();
 // For each simulated datum, update the mean absolute percentage error...
 console.log( '\nValue\tValue\tMAPE\n' );
 for ( i = 0; i < 100; i++ ) {
-	if ( randu() < 0.2 ) {
-		v1 = NaN;
-		v2 = NaN;
-	} else {
-		v1 = ( randu()*100.0 ) + 50.0;
-		v2 = ( randu()*100.0 ) + 50.0;
-	}
+	v1 = ( bernoulli( 0.8 ) < 1 ) ? NaN : uniform( -50.0, 50.0 );
+	v2 = ( bernoulli( 0.8 ) < 1 ) ? NaN : uniform( -50.0, 50.0 );
 	err = accumulator( v1, v2 );
 	console.log( '%d\t%d\t%d', v1.toFixed( 3 ), v2.toFixed( 3 ), ( err === null ) ? NaN : err.toFixed( 3 ) );
 }