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How do I calculate percentiles with python/numpy?
...MUST BE already sorted.
@parameter percent - a float value from 0.0 to 1.0.
@parameter key - optional key function to compute value from each element of N.
@return - the percentile of the values
"""
if not N:
return None
k = (len(N)-1) * percent
f = math.floor(k)...
How do I generate random number for each row in a TSQL Select?
...using convert(varbinary,newid()) as the seed argument:
SELECT table_name, 1.0 + floor(14 * RAND(convert(varbinary, newid()))) magic_number
FROM information_schema.tables
newid() is guaranteed to return a different value each time it's called, even within the same batch, so using it as a seed wil...
mongodb: insert if not exists
...# This fails
E11000 duplicate key error index: foo.test.$a_1 dup key: { : 1.0 }
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How to store int[] array in application Settings
...his, this is for a string array, which was what I needed <?xml version="1.0" encoding="utf-16"?> <ArrayOfString xmlns:xsi="w3.org/2001/XMLSchema-instance" xmlns:xsd="w3.org/2001/XMLSchema"> <string>String1</string> <string>String2</string> </ArrayOfString&g...
Convert PDF to image with high resolution
...
test.pdf \
-quality 100 \
-flatten \
-sharpen 0x1.0 \
24-18.jpg
It results in the left image. Compare this to the result of my original command (the image on the right):
(To really see and appreciate the differences between the two, right-click on each and sel...
How to keep index when using pandas merge
...2']))
In: a['col2']
Out:
col1 to_merge_on col2
a 1 1 1.0
b 2 3 2.0
c 3 4 NaN
This doesn't introduce a dummy index name for the index.
Note however that there is no DataFrame.map method, and so this approach is not for multiple columns.
...
Is there a way to list pip dependencies/requirements?
... Python package for providing Mozilla's CA Bundle.
├── chardet<3.1.0,>=3.0.2 Universal encoding detector for Python 2 and 3
├── idna<2.7,>=2.5 Internationalized Domain Names in Applications (IDNA)
└── urllib3<1.23,>=1.21.1 HTTP library with thread-safe ...
Programmatically change log level in Log4j2
... }
}
Assuming following log4j2.xml is in classpath
<?xml version="1.0" encoding="UTF-8"?>
<Configuration xmlns="http://logging.apache.org/log4j/2.0/config">
<Appenders>
<File name="FILE" fileName="logs/server.log" append="true">
<PatternLayou...
How to handle checkboxes in ASP.NET MVC forms?
...
This is also present in the 1.0 release. Look at the answer @andrea-balducci submitted that gives you an intelligent way to deal with this. If the checkbox is not checked, the resulting text retrieved should be 'false false' - its a good workaround to...
MongoDB or CouchDB - fit for production? [closed]
...to CouchDB.
It's quite a risky step, I admit. Firstly, because it's not v1.0 yet. And secondly, because it is drivespace-hungry. By my calculations, CouchDB file (with indexes) is ~30 times larger than MySQL database with the same rows.
But I am pretty sure it will work out just fine.
...