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Weighted random numbers
...andom number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is less than that item's weight
Pseudo-code illustrating this:
int sum_of_weight = 0;
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phonegap open link in browser
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answered Jul 26 '13 at 17:28
freejoshfreejosh
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What does pylint's “Too few public methods” message mean
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edited Dec 23 '17 at 0:53
June7
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an...
Multiple linear regression in Python
... my dependent variable (y) against several independent variables (x1, x2, x3, etc.).
13 Answers
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R apply function with multiple parameters
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3 Answers
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Specify custom Date format for colClasses argument in read.table/read.csv
...rom) as.Date(from, format="%d/%m/%Y") )
tmp <- c("1, 15/08/2008", "2, 23/05/2010")
con <- textConnection(tmp)
tmp2 <- read.csv(con, colClasses=c('numeric','myDate'), header=FALSE)
str(tmp2)
Then modify if needed to work for your data.
Edit ---
You might want to run setClass('myDate') ...
Pandas: drop a level from a multi-level column index?
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321
You can use MultiIndex.droplevel:
>>> cols = pd.MultiIndex.from_tuples([("a", "b"), ...
Does the ternary operator exist in R?
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306
As if is function in R and returns the latest evaluation, if-else is equivalent to ?:.
> a...
CSV in Python adding an extra carriage return, on Windows
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325
Python 3:
As described by YiboYang, set newline=''
with open('output.csv', 'w', newline=''...