Hello, sorry to bother you. I am a student using the Qualisys Motion capture for the qualisys_python_sdk on ubuntu system, and I execute the command as you :

python -m pip install pip --upgrade # Upgrade to latest pip
python -m pip install qtm

but there're problems to warning me, as following:

x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/twisted/test/raiser.c -o build/temp.linux-x86_64-2.7/src/twisted/test/raiser.o

src/twisted/test/raiser.c:4:20: fatal error: Python.h: No such file or directory

compilation terminated.

error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

Can you help me ? thank you ！！！

One problem we face during feedback is that the 6d data which QTM is publishing in python has coordinates (x,y,z) and a rotation matrix. We need roll, pitch and yaw separately, also it will be good if we can receive velocity and acceleration data of any rigid body from QTM. Can you please help regarding it?

Hi, I'm using QTM (v 2021.2) and qtm_rt (v 3.0.1) with RT protocol on python (v1.23) on windows.
I have some issues with the example "stream_6dof_example.py" like explained in: https://www.qualisys.com/video-tutorials/how-to-use-the-python-sdk-for-qtm/ I hope someone can help.

When I run the example offline from a saved file, I have no problem with the number of frames, etc. But when I try to run the example live, the number of frame is always equal to one.

There's something wrong with my understanding but I can't work out what.
Thanks for your help!

Amedeo

The new release of the python SDK seems to use protocol 1.19, and therefore does not appear to work with QTM 2018.1 (4300), which only supports up to 1.18, and which as far as I can tell is the latest release of QTM.

Hi!
I have a problem using the lib and I get an exception when calling Discover()

Environment:
OSx 10.5.7
Python 3.8.5
py qtm 2.0.5

I get the following exception when calling qtm.Discover()

File "/Users/kristoffer/code/bitcraze/playground/qualisys_demo/test.py", line 94, in _discover
async for qtm_instance in qtm.Discover('0.0.0.0'):
File "/Users/kristoffer/.pyenv/versions/3.8.5/lib/python3.8/site-packages/qtm/discovery.py", line 78, in anext
_, protocol = await loop.create_datagram_endpoint(
File "/Users/kristoffer/.pyenv/versions/3.8.5/lib/python3.8/asyncio/base_events.py", line 1291, in create_datagram_endpoint
raise ValueError("Passing reuse_address=True is no "
ValueError: Passing reuse_address=True is no longer supported, as the usage of SO_REUSEPORT in UDP poses a significant security concern.

I have updated qtm python sdk to version 2.1.0 and I have connection problem now. Version 2.0.6 was working fine. But with 2.1.0 when I run basic_example it gives me error.

python3 basic_example.py

2021-04-15 09:58:00,434 - qtm - INFO - Connected
2021-04-15 09:58:00,498 - qtm - ERROR - <class 'Exception'>

We are having issues with high level commander which has been discussed with bicraze as well bitcraze/crazyflie-lib-python#395 (comment). As per the response from bitcraze the problem is with discover() function in qualisys_python_sdk.

Please let us know if it is version issue or something else and how can we resolve at our end at the earliest.

Hi,

I'm actually able to stream frames in real time but i would like to start a new capture in QTM using the python sdk.
I setup the connection as you did in your advanced_exemple file. It works fine until i'm trying to use connection.set_qtm_event

I guess this is not the way to use it. Do you have any recommandation to take control of qtm and manage capture (start, stop, set filename) ?

Here the code i'm using :

connection = await qtm.connect(127.0.0.1, version="1.16")

async with qtm.TakeControl(connection, "password"):
    #logger.info('Password OK')
    state = await connection.get_state()
    if state != qtm.QRTEvent.EventConnected:
        await connection.new()
        try:
            await connection.await_event(qtm.QRTEvent.EventConnected, timeout=10)
        except asyncio.TimeoutError:
            #logger.warning("Failed to start new measurement | asyncio.TimeoutError")
            return -1

    await connection.set_qtm_event(qtm.QRTEvent.EventCaptureStarted)

Thank you !

Some functions in Markup.cpp file are not defined. Please look into the matter and rectify.

I have build the code using CMake MinGW Makefiles (GUI) and encountering the following error while making the files using mingw32-make, in the Markup.cpp file.

`C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\build> mingw32-make`
`[ 20%] Building CXX object CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj`
`C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp: In member function 'std::__cxx11::string CMarkup::x_TextToDoc(const char*, bool) const':`
`C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp:732:44: error: 'strcpy_s' was not declared in this scope`
`    strcpy_s(&pDest[nLen], nDestSize, pFound);`
`                                            ^`
`C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp: In static member function 'static std::__cxx11::string CMarkup::Format(const char*, ...)':`
`C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp:1182:80: error: '_vsnprintf_s' was not declared in this scope`
`         int nWritten = _vsnprintf_s(&buffer[0], buffer.size(), len, fmt, marker);`
`                                                                                ^`
`CMakeFiles\qualisys_cpp_sdk.dir\build.make:75: recipe for target 'CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj' failed`
`mingw32-make[2]: *** [CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj] Error 1`
`CMakeFiles\Makefile2:81: recipe for target 'CMakeFiles/qualisys_cpp_sdk.dir/all' failed`
`mingw32-make[1]: *** [CMakeFiles/qualisys_cpp_sdk.dir/all] Error 2`
`Makefile:134: recipe for target 'all' failed`
`mingw32-make: *** [all] Error 2`

Hello, I executed the example : basic_example, but it tips me that following message:

Connected to QTM with Version set to 1.13
'You must be master to issue this command'
Connection was closed cleanly.

What should I do ? Thank you !

Hello,

I am looking to stream analog data that is collected in QTM. Looking at the examples in the SDK folders, I have found the majority of information and examples on streaming marker data.

I have tried modifying the BasicExample.py file, to stream in analog data, but I keep receiving an error when I try to retrieve the analog parameter packet.

I have no issues with my connection to QTM, and am able to stream marker data using the basic example how it is intended.

I am fairly new to Python, and any help to better understand the code would be appreciated. Thank you in advance.

CODE:
"""
Minimal usage example
Connects to QTM and streams 3D data forever
(start QTM first, load file, Play->Play with Real-Time output)
"""

import asyncio
import qtm

def on_packet(packet):
""" Callback function that is called everytime a data packet arrives from QTM """
print("Framenumber: {}".format(packet.framenumber))
header, markers = packet.get_analog()
print("Component info: {}".format(header))

async def setup():
""" Main function """
connection = await qtm.connect("127.0.0.1")
if connection is None:
return

await connection.get_parameters(parameters=["analog"], on_packet=on_packet)

if name == "main":
asyncio.ensure_future(setup())
asyncio.get_event_loop().run_forever()