wr = nest.Create('weight_recorder')
nest.CopyModel('stdp_synapse', 'model_name')
nest.SetDefaults('model_name',{'weight_recorder': wr[0]})

nest.Connect(..., syn_spec = 'model_name')

OR

nest.Connect(...,'one_to_one',{'model': 'model_name',
                               'weight': {"distribution": "uniform", "low": w_min, "high": w_max}
                              })

I hope this helps.

Ciao,

Alberto

Alberto Antonietti, Ph.D.
Nearlab - NeuroEngineering And medical Robotics Laboratory
Department of Electronics, Information and Bioengineering
Politecnico di Milano

Department of Brain and Behavioral Sciences - Unit of Neurophysiology
University of Pavia, Italy

http://www.nearlab.polimi.it/
http://www-5.unipv.it/dangelo/
Hello everyone! 

I need to take track of the weight of a set of synapses through time. I know that there already is a device to do that implemented in nest. According to its documentation, the 'weight recorder' should be created and, then, specified in a synapse model through the command:

wr = nest.Create('weight_recorder')
nest.CopyModel('stdp_synapse', 'model_name', {'weight_recorder': wr})
nest.Connect(..., syn_spec = 'model_name')

The problem is that my synapses have weights distributed by a uniform distribution defined as:

'weight': {"distribution": "uniform", "low": w_min, "high": w_max}

but whenever I try to set this in CopyModel I get the following error:

terminate called without an active exception
[q035:13577] *** Process received signal ***
[q035:13577] Signal: Aborted (6)
[q035:13577] Signal code:  (-6)
[q035:13577] [ 0] /lib64/libpthread.so.0(+0xf370)[0x2b4ae83d4370]
[q035:13577] [ 1] /lib64/libc.so.6(gsignal+0x37)[0x2b4ae8d1f1d7]
[q035:13577] [ 2] /lib64/libc.so.6(abort+0x148)[0x2b4ae8d208c8]
[q035:13577] [ 3] /lib64/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x165)[0x2b4b3cb049d5]
[q035:13577] [ 4] /lib64/libstdc++.so.6(+0x5e946)[0x2b4b3cb02946]
[q035:13577] [ 5] /lib64/libstdc++.so.6(+0x5e973)[0x2b4b3cb02973]
[q035:13577] [ 6] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libnestkernel.so(+0x85edc)[0x2b4b3b2eeedc]
[q035:13577] [ 7] /lib64/libgomp.so.1(GOMP_parallel+0x3f)[0x2b4b3cdbb08f]
[q035:13577] [ 8] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libnestkernel.so(_ZN4nest12ModelManager21set_synapse_defaults_EmRK12lockPTRDatumI10DictionaryXadL_ZN14SLIInterpreter14DictionarytypeEEEE+0x65)[0x2b4b3b2eaae5]
[q035:13577] [ 9] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libnestkernel.so(_ZN4nest12ModelManager10copy_modelE4NameS1_12lockPTRDatumI10DictionaryXadL_ZN14SLIInterpreter14DictionarytypeEEEE+0x2bd)[0x2b4b3b2ecfdd]
[q035:13577] [10] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libnestkernel.so(_ZNK4nest10NestModule23CopyModel_l_l_DFunction7executeEP14SLIInterpreter+0x112)[0x2b4b3b2f93f2]
[q035:13577] [11] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libsli.so(_ZN13FunctionDatum7executeEP14SLIInterpreter+0x123)[0x2b4b3bf70473]
[q035:13577] [12] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libsli.so(_ZN14SLIInterpreter8execute_Em+0x312)[0x2b4b3bf6d382]
[q035:13577] [13] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/../../../libsli.so(_ZN14SLIInterpreter7executeERKSs+0x128)[0x2b4b3bf6d8a8]
[q035:13577] [14] /opt/NEST-nesters/lib64/python2.7/site-packages/nest/pynestkernel.so(+0x23cf5)[0x2b4b3a160cf5]
[q035:13577] [15] /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6d62)[0x2b4ae80dea62]
[q035:13577] [16] /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x67bd)[0x2b4ae80de4bd]
[q035:13577] [17] /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed)[0x2b4ae80e0e3d]
[q035:13577] [18] /lib64/libpython2.7.so.1.0(+0x7088d)[0x2b4ae806a88d]
[q035:13577] [19] /lib64/libpython2.7.so.1.0(PyObject_Call+0x43)[0x2b4ae80458e3]
[q035:13577] [20] /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x17fd)[0x2b4ae80d94fd]
[q035:13577] [21] /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed)[0x2b4ae80e0e3d]
[q035:13577] [22] /lib64/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x663c)[0x2b4ae80de33c]
[q035:13577] [23] /lib64/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7ed)[0x2b4ae80e0e3d]
[q035:13577] [24] /lib64/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x2b4ae80e0f42]
[q035:13577] [25] /lib64/libpython2.7.so.1.0(+0x10037f)[0x2b4ae80fa37f]
[q035:13577] [26] /lib64/libpython2.7.so.1.0(PyRun_InteractiveOneFlags+0x150)[0x2b4ae80fc430]
[q035:13577] [27] /lib64/libpython2.7.so.1.0(PyRun_InteractiveLoopFlags+0x5e)[0x2b4ae80fc61e]
[q035:13577] [28] /lib64/libpython2.7.so.1.0(PyRun_AnyFileExFlags+0x3e)[0x2b4ae80fccae]
[q035:13577] [29] /lib64/libpython2.7.so.1.0(Py_Main+0xc9f)[0x2b4ae810d91f]
[q035:13577] *** End of error message ***
Annullato (core dumped)

Can somebody help me?

Thank you!

Chiara
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