code: public static PlotCanvas plot(double[][] vertices, int[][] edges) {
          double[] lowerBound = Math.colMin(vertices);
          double[] upperBound = Math.colMax(vertices);
  
          PlotCanvas canvas = new PlotCanvas(lowerBound, upperBound);
  
          Wireframe frame = new Wireframe(vertices, edges);
          canvas.add(frame);
  
          return canvas;
      }
docs: Create a wire frame plot canvas.
  @param vertices a n-by-2 or n-by-3 array which are coordinates of n vertices.