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Questions tagged pandas

109 questions · page 1 of 3

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239
votes
7
answers

Python Pandas merge only certain columns

python merge pandas
asked 2013-07-31T18:30:28.557
210
votes
13
answers

Combine Date and Time columns using pandas

python pandas datetime time-series
asked 2013-07-31T18:27:40.550
32
votes
1
answers

Pandas: Subindexing dataframes: Copies vs views

python pandas chained-assignment
asked 2013-07-31T02:16:42.917
10
votes
2
answers

Serialize a dictionary containing pandas data-frames (Python)

python serialization dictionary pandas dataframe
asked 2013-07-28T10:50:59.737
8
votes
2
answers

Concatenate Columns as Index in Pandas

python pandas
asked 2013-07-23T20:20:00.160
8
votes
1
answers

data points connected in wrong order in line graph

python pandas matplotlib
asked 2013-07-22T11:47:41.613
156
votes
16
answers

List Highest Correlation Pairs from a Large Correlation Matrix in Pandas?

python pandas correlation
asked 2013-07-22T00:31:30.230
19
votes
2
answers

return rows in a dataframe closest to a user-defined number

python python-2.7 pandas
asked 2013-07-20T02:18:41.027
64
votes
3
answers

Replace value for a selected cell in pandas DataFrame without using index

python pandas dataframe
asked 2013-07-18T17:08:17.710
28
votes
3
answers

Pandas: Sorting columns by their mean value

python pandas
asked 2013-07-17T23:44:15.973
87
votes
8
answers

Create column of value_counts in Pandas dataframe

python pandas
asked 2013-07-17T20:08:43.323
23
votes
2
answers

Counting the business days between two series

python pandas
asked 2013-07-17T15:05:31.267
14
votes
1
answers

Using describe() with weighted data -- mean, standard deviation, median, quantiles

python pandas statsmodels
asked 2013-07-17T00:19:22.317
8
votes
2
answers

Error installing with pip

python installation pandas pip
asked 2013-07-16T22:30:26.343
27
votes
4
answers

python pandas groupby() result

python group-by pandas
asked 2013-07-16T00:24:25.113
67
votes
2
answers

Create hourly/minutely time range using pandas

python time pandas range
asked 2013-07-14T21:45:51.793
71
votes
7
answers

How to sort pandas data frame using values from several columns?

python sorting dataframe pandas
asked 2013-07-12T15:54:28.233
43
votes
2
answers

Combining rows in pandas

python pandas
asked 2013-07-03T02:51:45.803
35
votes
1
answers

Pandas set_index does not set the index

python pandas
asked 2013-06-26T19:19:10.150
109
votes
5
answers

get dataframe row count based on conditions

python pandas
asked 2013-06-26T13:56:02.770
114
votes
2
answers

Python Pandas: Convert Rows as Column headers

python pandas
asked 2013-06-25T13:12:10.197
41
votes
3
answers

Conditional Sum with Groupby

python pandas group-by
asked 2013-06-23T23:06:27.937
308
votes
8
answers

How do I convert a Pandas series or index to a NumPy array?

python pandas
asked 2013-06-21T17:25:25.663
18
votes
3
answers

Get indices that satisfy some criteria

python pandas
asked 2013-06-20T14:02:02.137
531
votes
5
answers

How to sort a pandas dataFrame by two or more columns?

python pandas dataframe sorting data-analysis
asked 2013-06-17T06:28:47.340
121
votes
10
answers

Replace invalid values with None in Pandas DataFrame

python pandas dataframe replace nan
asked 2013-06-13T21:17:31.310
195
votes
5
answers

Python pandas: fill a dataframe row by row

python dataframe row pandas
asked 2013-06-13T16:02:32.103
14
votes
1
answers

Invert index and columns in a pandas DataFrame

python pandas
asked 2013-06-12T22:51:34.133
9
votes
1
answers

Error when trying to apply log method to pandas data frame column in Python

python numpy pandas dataframe
asked 2013-06-06T17:27:34.363
18
votes
4
answers

Showing Pandas data frame as a table

python pandas
asked 2013-06-06T09:30:43.467
38
votes
4
answers

Sort Pandas dataframe and print highest n values

pandas sorting dataframe max
asked 2013-06-06T09:30:01.890
96
votes
6
answers

Pandas: Appending a row to a dataframe and specify its index label

python pandas
asked 2013-05-29T21:59:14.313
10
votes
1
answers

Python - Pandas '.isin' on a list

python-2.7 pandas
asked 2013-05-29T02:18:12.760
151
votes
5
answers

Keep selected column as DataFrame instead of Series

python pandas
asked 2013-05-28T00:48:52.993
13
votes
2
answers

Deleting a Row from a Time Indexed Dataframe

pandas time-series delete-row dataframe
asked 2013-05-17T15:47:03.063
9
votes
2
answers

Make a multiline plot from .CSV file in matplotlib

csv matplotlib pandas
asked 2013-05-15T15:19:46.490
15
votes
4
answers

multi-column factorize in pandas

python pandas enumeration data-cleaning
asked 2013-05-09T02:39:55.703
123
votes
5
answers

Make more than one chart in same IPython Notebook cell

python pandas ipython jupyter-notebook
asked 2013-05-06T06:10:36.307
11
votes
1
answers

Is there an efficient way to merge two sorted dataframes in pandas, maintaing sortedness?

python numpy pandas
asked 2013-05-01T12:44:50.760
18
votes
1
answers

Swapping Axes in Pandas

python indexing pandas swap
asked 2013-04-30T13:48:05.197
15
votes
0
answers

Annotate scatterplot from a pandas dataframe

matplotlib pandas
asked 2013-04-11T08:22:42.470
11
votes
0
answers

How to set the default datatype as 'float32' for numpy & pandas?

numpy type-conversion pandas
asked 2013-03-28T05:24:48.093
18
votes
8
answers

How to apply custom column order (on Categorical) to pandas boxplot?

python pandas boxplot categorical-data
asked 2013-03-21T07:09:32.100
41
votes
5
answers

What is the fastest way to output large DataFrame into a CSV file?

python performance pandas output
asked 2013-03-14T18:40:11.043
69
votes
5
answers

Apply function to pandas groupby

python pandas
asked 2013-03-13T00:01:13.620
373
votes
5
answers

Selecting with complex criteria from pandas.DataFrame

python pandas select filter conditional-statements
asked 2013-03-09T20:17:49.170
23
votes
4
answers

How can I divide single values of a dataframe by monthly averages?

pandas time-series average resampling
asked 2013-03-08T15:06:39.983
204
votes
14
answers

GroupBy pandas DataFrame and select most common value

python pandas dataframe group-by mode
asked 2013-03-05T11:34:38.150
23
votes
3
answers

Plot key count per unique value count in pandas

python plot pandas
asked 2013-02-28T03:00:33.367
11
votes
3
answers

How to get values from a "cell" of a "groupby" object?

python group-by pandas
asked 2013-02-21T12:18:01.303
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