nan Questions
2
In rust, is there a version of f32 / f64 that implements Eq?
The only reason I can see for f32 / f64 not implementing Eq is that NaN != NaN.
Potential ways such a type could behave:
The type could...
Chon asked 18/8, 2022 at 20:50
10
Solved
i'm trying to predict next customer purchase to my job. I followed a guide, but when i tried to use cross_val_score() function, it returns NaN values.Google Colab notebook screenshot
Variables:
...
Sorely asked 11/2, 2020 at 15:36
12
Solved
I was asked to filter out NaN, null, 0, false in an array.
Luckily I have answered the question.
function bouncer(arr) {
function filterer(arr) {
return arr > 0|| isNaN(arr) === true;
}
a...
Landlordism asked 10/8, 2015 at 17:7
6
Solved
In my test case, I assume that if two values are NaN then they are equal. What is the way to express it using unittest assertions? The two common functions presented below are not handling this cas...
Hitandrun asked 7/8, 2018 at 13:49
3
Solved
pandas.DataFrame.to_dict converts nan to nan and null to None. As explained in Python comparison ignoring nan this is sometimes suboptimal.
Is there a way to convert all nans to None? (either in p...
Aeriel asked 25/1, 2018 at 22:50
3
I have dictionary and created Pandas using
cars = pd.DataFrame.from_dict(cars_dict, orient='index')
and
sorted the index (columns in alphabetical order
cars = cars.sort_index(axis=1)
After sortin...
6
Solved
I came across the goog.math.isFiniteNumber function in the Google Closure Library. What it does is checking whether a given number is both finite and not NaN.
The underlying code is:
goog.math.is...
Terminable asked 16/4, 2011 at 22:29
3
Solved
When creating a nan which contains a char-sequence, how do I get the char-sequence back? [duplicate]
When doing
const double d = std::nan ("Hello");
you get a NAN containing the string "Hello". How can one back out this string from the variable d? Is there simply no standard conforming wa...
Enlargement asked 16/8, 2018 at 7:41
2
Solved
I have a dataframe with a column whose values look something like:
YEAR_TORONTO
0 <NA>
1 2016
2 <NA>
3 1999
I need to check each element of this dataframe individually via a for loop ...
16
Solved
I have a Pandas Dataframe as below:
itm Date Amount
67 420 2012-09-30 00:00:00 65211
68 421 2012-09-09 00:00:00 29424
69 421 2012-09-16 00:00:00 29877
70 421 2012-09-23 00:00:00 30990
71 421 2012...
5
Solved
Example
import pandas as pd
import numpy as np
d = {'l': ['left', 'right', 'left', 'right', 'left', 'right'],
'r': ['right', 'left', 'right', 'left', 'right', 'left'],
'v': [-1, 1, -1, 1, -1, np...
23
Solved
Just out of curiosity.
It doesn't seem very logical that typeof NaN is number. Just like NaN === NaN or NaN == NaN returning false, by the way. Is this one of the peculiarities of JavaScript, or wo...
Uranian asked 10/5, 2010 at 9:30
6
Solved
I have a dataframe in which some rows contain missing values.
In [31]: df.head()
Out[31]:
alpha1 alpha2 gamma1 gamma2 chi2min
filename
M66_MI_NSRh35d32kpoints.dat 0.8016 0.9283 1.000000 0.074...
6
Solved
I need to calculate the number of non-NaN elements in a numpy ndarray matrix. How would one efficiently do this in Python? Here is my simple code for achieving this:
import numpy as np
def numbe...
7
Solved
How do I create or test for NaN or infinite values in Perl?
17
Solved
I have this DataFrame and want only the records whose EPS column is not NaN:
STK_ID EPS cash
STK_ID RPT_Date
601166 20111231 601166 NaN NaN
600036 20111231 600036 NaN 12
600016 20111231 600016 4....
31
Solved
I read data from a .csv file to a Pandas dataframe as below. For one of the columns, namely id, I want to specify the column type as int. The problem is the id series has missing/empty values.
Whe...
3
Solved
Is it possible to use numpy.nanargmin, so that it returns numpy.nan, on columns where there are only nans in them. Right now, it raises a ValueError, when that happens. And i cant use numpy.argmin,...
16
Solved
Given a pandas dataframe containing possible NaN values scattered here and there:
Question: How do I determine which columns contain NaN values? In particular, can I get a list of the column names...
5
Solved
It seems to me that the code
console.log(1 / 0)
should return NaN, but instead it returns Infinity. However this code:
console.log(0 / 0)
does return NaN. Can someone help me to...
Horde asked 16/9, 2013 at 22:23
2
Solved
6
Solved
I was wondering if there are classifiers that handle nan/null values in scikit-learn. I thought random forest regressor handles this but I got an error when I call predict.
X_train = np.array([[1,...
Halfcock asked 19/5, 2015 at 5:2
14
Solved
Is there a quick way of replacing all NaN values in a numpy array with (say) the linearly interpolated values?
For example,
[1 1 1 nan nan 2 2 nan 0]
would be converted into
[1 1 1 1.3 1.6 2 ...
Nardi asked 29/6, 2011 at 9:58
4
Solved
I am curious why a simple concatenation of two dataframes in pandas:
initId.shape # (66441, 1)
initId.isnull().sum() # 0
ypred.shape # (66441, 1)
ypred.isnull().sum() # 0
of the same shape and bo...
Procedure asked 31/10, 2016 at 9:55
2
Solved
import numpy as np
import pandas as pd
import tia.bbg.datamgr as dm
mgr = dm.BbgDataManager()
bb_yearb4 = "2016-12-30"
bb_today = "2017-09-22"
indices = [list of indices]
sids_index = mgr[indices...
Macklin asked 22/9, 2017 at 16:43
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