Genfromtxt assigns nan when it can't convert the string to float In : np.genfromtxt(L, delimiter=',')Īrray(, ValueError: could not convert string to float: b'' usr/local/lib/python3.5/dist-packages/numpy/lib/npyio.py in floatconv(x) usr/local/lib/python3.5/dist-packages/numpy/lib/npyio.py in (.0) > 1024 items = ġ025 # Then pack it according to the dtype's nesting usr/local/lib/python3.5/dist-packages/numpy/lib/npyio.py in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin)ġ023 # Convert each value according to its column and store The error trace is: ValueError Traceback (most recent call last)ĥ date, closep, highp, lowp, openp, adj_closep, volume = np.loadtxt(L,
I am able to reproduce the issue with these three lines of code: import numpy as np
I am following tutorial at: and ran into the above error. You can do that by just supplying a list of the columns of interest as an index (shown below.Saw couple of responses with the above mentioned error but culdn't figure out bug in my code. You may need to just specify which columns to use-which is actually a better way to do it rather than rely on pd to do this for you. When I try to replicate this behavior, the corr() method works OK but spits out a warning (shown below) that warns that the ignoring of non-numeric columns will be removed in the future. ValueError: could not convert string to float: 'Avery Bradley' Result = self._mgr.as_array(dtype=dtype, copy=copy, na_value=na_value)įile "C:\Users\d.o\AppData\Local\Programs\Python\Python311\Lib\site-packages\pandas\core\internals\managers.py", line 1732, in as_arrayĪrr = self._interleave(dtype=dtype, na_value=na_value)įile "C:\Users\d.o\AppData\Local\Programs\Python\Python311\Lib\site-packages\pandas\core\internals\managers.py", line 1794, in _interleave Mat = data.to_numpy(dtype=float, na_value=np.nan, copy=False)įile "C:\Users\d.o\AppData\Local\Programs\Python\Python311\Lib\site-packages\pandas\core\frame.py", line 1838, in to_numpy Traceback (most recent call last):įile "C:\Users\d.o\AppData\Local\Programs\Python\Python311\Lib\site-packages\pandas\core\frame.py", line 10059, in corr
I thought the corr() method was supposed to automatically ignore strings and empty values etc. Specifically, when I try to run the following code: df.corr(method ='pearson') I'm getting this very strange error when trying to follow the following exercise on using the corr() method in Python
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