Unstructured coordinates# Sometimes we collect data z at coordinates (x,y) and want to visualize as a contour. Instead of gridding the data and then using contour, we can use a triangulation algorithm and fill the triangles. tricontour(x, y, z) tricontour(x, y, z) tricontourf(x, y, z) tricontourf(x, y, z) tripcolor(x, y, z) tripcolor(x, y, z) triplot(x, y) triplot(x, y)