Shape of passed values is (x, 1), indices imply (y, 25) about wntr HOT 5 CLOSED

@saramille What versions of WNTR and Pandas are you using? Do you get a similar error with the WNTRSimulator (as opposed to the EpanetSimulator)?

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After talking to @saramille, it appears that the simulation does not run to completion in WNTR or in the EPANET GUI. This issue was resolved by modifying the damping limit in the INP file. We will try to replicate this error in WNTR and generate a better error message.

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I installed the recent version of Anaconda distribution with all the python packages uptodate. I don't recall the version of pandas right now but both WNTR and EPANET simulators were giving me the same errors-- the running time on WNTR is a bit longer.

As Kate mentioned, what worked for me was increasing the damping effect from 0 (default value) to 0.1. This might relate to accuracy of the iterations...with larger values being less accurate.

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I am currently getting a similar ValueError as described above. I do not have a damping limit in my INP file, and would probably prefer to keep the damping effect at its default. Is there any other reason why I might be getting this error? Here is my Traceback:

File … \Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 827, in runfile
execfile(filename, namespace)

File …\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 110, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File …pds_LbLcode.py", line 572, in
pressure_output = run_pressure_simulations(wn_copy, 27, 1, 3, process_id_num)

File …pds_LbLcode.py", line 47, in run_pressure_simulations
results = epanet_sim.run_sim(file_prefix = "process_temp" + str(process_number))

File …\Anaconda3\lib\site-packages\wntr\sim\epanet.py", line 98, in run_sim
return self.reader.read(outfile)

File …\Anaconda3\lib\site-packages\wntr\epanet\io.py", line 2792, in read
df = pd.DataFrame(data.transpose(), index =index, columns = reporttimes)

File …\Anaconda3\lib\site-packages\pandas\core\frame.py", line 440, in init
mgr = init_ndarray(data, index, columns, dtype=dtype, copy=copy)

File …\Anaconda3\lib\site-packages\pandas\core\internals\construction.py", line 213, in init_ndarray
return create_block_manager_from_blocks(block_values, [columns, index])

File …\Anaconda3\lib\site-packages\pandas\core\internals\managers.py", line 1688, in create_block_manager_from_blocks
construction_error(tot_items, blocks[0].shape[1:], axes, e)

File …\Anaconda3\lib\site-packages\pandas\core\internals\managers.py", line 1719, in construction_error
"Shape of passed values is {0}, indices imply {1}".format(passed, implied)

ValueError: Shape of passed values is (565279, 1), indices imply (31404, 25)

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Since this is a similar question to the one already closed, I wasn't sure whether or not to create a new issue or attach to this one, so I will wait a day and then create a new issue if I don't hear anything.

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