ros2_np_multiarray
Convert between numpy ndarray and ROS2 multiarray message.
Usage
This is a simple example.
from ros2_np_multiarray import ros2_np_multiarray as rnm
import numpy as np
print(rnm.to_multiarray_f32(np.array([[[1.0, 2.0], [3.0, 4.0]]], dtype=np.float32)))
We get the data converted to 'std_msgs/Float32MultiArray'.
layout:
dim:
-
label: "dim0"
size: 1
stride: 4
-
label: "dim1"
size: 2
stride: 8
-
label: "dim2"
size: 2
stride: 8
data_offset: 0
data: [1.0, 2.0, 3.0, 4.0]
Test
colcon test --packages-select ros2_np_multiarray --pytest-args -k test_to_multiarray_f32