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How do i use tf2_ros to convert from quaternions to euler?

asked 2020-12-26 04:11:43 -0500

Qilos gravatar image

Hello guys,

After a lot of time of setup i finally managed to be able to import tf2_ros in python3. I really would like to use tf2_ros to convert the orientation message of the odometry to roll, pitch and yaw angles. I read that you need to use tf2 to transform it.

I imported tf2_ros and tried the function:

(r,p,y) = tf2_ros.euler_from_quaternion(ori_list)


(r,p,y) = euler_from_quaternion(ori_list)

Both resulted in an error that euler_from_quaternion is not defined or that it is not an attribute of tf2_ros

What do i need to do to use the transformation? I preferably would like it to work with python3

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answered 2020-12-26 14:07:43 -0500

SmallJoeMan gravatar image

updated 2020-12-26 16:50:17 -0500

The module was not included in the migration to tf2:

I suggest you use transforms3d:

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answered 2020-12-26 14:42:02 -0500

updated 2020-12-26 14:44:24 -0500

You have used the kinetic tag. Are you sure you are using ros-kinetic? Because from what I know, ros-kinetic only has support for python2. If you want to use python3, you will have to migrate to ros-noetic or ros2.

Also, have you included tf2 in your code (import tf2_ros)? Can you post your code here so we can see what exactly is going on.

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You are partially right, ros kinetic is made with python 2 but with a few tweaks its possible to run it with python3

Qilos gravatar image Qilos  ( 2021-01-08 14:48:15 -0500 )edit

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Asked: 2020-12-26 04:11:43 -0500

Seen: 1,131 times

Last updated: Dec 26 '20