ValueError: Invalid number of dimensions for argument 'v_positions'. Expected 2 but got 1.

[sugizo]

env
google colab

steps

pip install -U pymartini point-cloud-utils
!wget -c https://raw.githubusercontent.com/kylebarron/pymartini/master/test/data/fuji.png

code

import imageio.v2 as imageio
from pymartini import decode_ele, Martini, rescale_positions
import point_cloud_utils as pcu

path = './fuji.png'
fuji = imageio.imread(path)
terrain = decode_ele(fuji, 'mapbox')
martini = Martini(fuji.shape[0] + 1)
tile = martini.create_tile(terrain)
vertices, triangles = tile.get_mesh(10)
pcu.save_triangle_mesh(f'{file_name}_pcu.stl', v = vertices, f = triangles)

result

ValueError                                Traceback (most recent call last)
[<ipython-input-10-420b66e278b6>](https://localhost:8080/#) in <cell line: 11>()
      9 tile = martini.create_tile(terrain)
     10 vertices, triangles = tile.get_mesh(10)
---> 11 pcu.save_triangle_mesh(f'{file_name}_pcu.stl', v = vertices, f = triangles)

1 frames
[/usr/local/lib/python3.10/dist-packages/point_cloud_utils/_mesh_io.py](https://localhost:8080/#) in save(self, filename, dtype)
    283                 raise ValueError("Invalid values for wedge colors, must be between 0 and 1 (inclusive)")
    284 
--> 285         save_mesh_internal(filename,
    286                            np.ascontiguousarray(self.vertex_data.positions.astype(dtype)),
    287                            np.ascontiguousarray(self.vertex_data.normals.astype(dtype)),

ValueError: Invalid number of dimensions for argument 'v_positions'. Expected 2 but got 1.

n.b.
the same steps work fine with pydelatin

best regards