module/src/matrix.js
/**
     * Create a new matrix that is a vertically flipped copy of the current matrix.
     * @return {Matrix}
     */
Create a new matrix that is a vertically flipped copy of the current matrix.
@return {Matrix}
Create a new matrix that is a vertically flipped copy of the current matrix . @return { Matrix }
vflip() {
        const copy = this.clone();
        copy.data.reverse();
        return copy;
    }
vflip ( ) { const copy = this . clone ( ) ; copy . data . reverse ( ) ; return copy ; }
Create a new matrix that is a vertically flipped copy of the current matrix.
Create a new matrix that is a vertically flipped copy of the current matrix .