                     ? 'black'
                            : colorMap.scaleColor(p.elevation, ...bboxExtent))
                    return colors
                },
                turtlesShape: 'square',
                turtlesRotate: false,
                turtlesColor: 'rgb(255,0,0)', // 'red',
                turtlesSize: 0.8,
            }

            // view = view || new TwoDraw(model, {
            view = new TwoDraw(model, {
                div: util.createCanvas(0, 0), // the view will resize
     