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Advanced tutorial for rospy services?

asked 2018-05-15 10:51:15 -0500

seanarm

723 ●38 ●51 ●63 http://seanmatthe.ws/

updated 2018-05-15 10:54:05 -0500

Please don't link me to the beginner tutorial. This is beyond the provided examples. Let's define MySrv.srv as:

geometry_msgs/Point p
geometry_msgs/Vector3 v
float64 f
bool b
---
bool success

Then I perform the following:

p = Point()
v = Vector3()
req = MySrvRequest(p, v, -1, False)                                                                                                                                                                                                                                                       
rsp = myServiceProxy(req)

I always get the error: DeserializationError cannot deserialize: 'Point' object attribute 'x' is read-only. What am I doing wrong?

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answered 2018-05-15 11:04:10 -0500

PeteBlackerThe3rd

flag of United Kingdom of Great Britain and Northern Ireland

9529 ●30 ●143 ●135 https://www.linkedin.c...

I think your service structure is too complex for the calling method described in the tutorials. This question from a while may help solve your problem. You may have to construct the request object beforehand and then call the service.

Hope this helps.