13 Apr
2021
13 Apr
'21
7:59 a.m.
Hello Xavier,
From a quick look, it seems the problem is the
'extent': [1, 1]
in the dictionary. It should be
'extent': [1.0, 1.0]
NEST does not automatically convert integers to floats (the argument to Simulate is the
only exception) and the error message given is indeed not very helpful.
This is really one of the not-so-nice features of NEST and I have created an issue to
remind us to do something about it: https://github.com/nest/nest-simulator/issues/2009
Best,
Hans Ekkehard
--
Prof. Dr. Hans Ekkehard Plesser
Head, Department of Data Science
Faculty of Science and Technology
Norwegian University of Life Sciences
PO Box 5003, 1432 Aas, Norway
Phone +47 6723 1560
Email hans.ekkehard.plesser(a)nmbu.no
Home http://arken.nmbu.no/~plesser
On 13/04/2021, 01:02, "xotazu(a)cvc.uab.es" <xotazu(a)cvc.uab.es> wrote:
Hello,
I am having a basic problem creating layers with topology (pyhton 3.6 and NEST
2.20.1). It always complains about the dictionary sent to CreateLayer, telling it is a
number. The code below correctly prints
<class 'dict'>
but prints this error:
Traceback (most recent call last):
File "test/binary_gdf.py", line 9, in <module>
kk=tp.CreateLayer({'extent': [1, 1],'rows': 20, 'columns':
20,'elements' : 'izhikevich','edge_wrap':True})
File
"/home/neurobit/local/nest-py3/lib64/python3.6/site-packages/nest/topology/hl_api.py",
line 650, in CreateLayer
return topology_func('{ CreateLayer } Map', specs)
File
"/home/neurobit/local/nest-py3/lib64/python3.6/site-packages/nest/topology/ll_api.py",
line 61, in topology_func
return nest.ll_api.sli_func(slifunc, *args)
File
"/home/neurobit/local/nest-py3/lib64/python3.6/site-packages/nest/ll_api.py",
line 182, in sli_func
sli_run(slifun) # SLI support code to execute s on args
File
"/home/neurobit/local/nest-py3/lib64/python3.6/site-packages/nest/ll_api.py",
line 132, in catching_sli_run
raise exceptionCls(commandname, message)
nest.lib.hl_api_exceptions.TypeMismatch: ('TypeMismatch in CreateLayer_D: Expected
datatype: doubletype\nProvided datatype: integertype', 'TypeMismatch',
<SLILiteral: CreateLayer_D>, ': Expected datatype: doubletype\nProvided
datatype: integertype')
Any help would be nice :-)
Xavier
----
import nest
import nest.topology as tp
nest.SetKernelStatus({"overwrite_files": True})
my_dict = {'extent': [1, 1],'rows': 20, 'columns':
20,'elements' : 'izhikevich','edge_wrap':True}
print(type(my_dict))
kk=tp.CreateLayer(my_dict)
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