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GB English, or US English?
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edited Mar 18 '16 at 10:36
answered Oct 1 '08 at 14:15
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Understanding FFT output
...aka 32 Hz, and N is the size of your FFT). In your case this simplifies to 1 Hz per bin. The bins N/2 to N represent negative frequencies (strange concept, I know). For your case they don't contain any significant information because they are just a mirror of the first N/2 frequencies.
Your real and...
Meaning of “[: too many arguments” error from if [] (square brackets)
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edited Sep 21 '19 at 17:30
answered Dec 8 '12 at 19:46
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Multiple aggregations of the same column using pandas GroupBy.agg()
...there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
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Are there pronounceable names for common Haskell operators? [closed]
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194
Here is how I pronounce them:
>>= bind
>> then
*> then
-> ...
How do I set a variable to the output of a command in Bash?
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14 Answers
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Can I use git diff on untracked files?
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10 Answers
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How to get Enum Value from index in Java?
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answered Jul 14 '11 at 11:53
Harry JoyHarry Joy
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How to merge 2 JSON objects from 2 files using jq?
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165
Since 1.4 this is now possible with the * operator. When given two objects, it will merge them...
Find column whose name contains a specific string
...list of column names that match:
import pandas as pd
data = {'spike-2': [1,2,3], 'hey spke': [4,5,6], 'spiked-in': [7,8,9], 'no': [10,11,12]}
df = pd.DataFrame(data)
spike_cols = [col for col in df.columns if 'spike' in col]
print(list(df.columns))
print(spike_cols)
Output:
['hey spke', 'no', ...