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Best wam>y m> to work with dates in m>And m>roid SQLite [closed]
I'm having some trouble working with dates on mm>y m> m>And m>roid application that uses SQLite.
I have a couple questions:
9 Answers...
Whm>y m> does X[m>Y m>] join of data.tables not allow a full outer join, or a left join?
...f a philosophical question about data.table join sm>y m>ntax. I am finding more m>and m> more uses for data.tables, but still learning...
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How can I create a correlation matrix in R?
...correlation. So, the number of rows must be the same between m>y m>our matrix x m>and m> matrix m>y m>. Ex.:
set.seed(1)
x <- matrix(rnorm(20), nrow=5, ncol=4)
m>y m> <- matrix(rnorm(15), nrow=5, ncol=3)
COR <- cor(x,m>y m>)
COR
image(x=seq(dim(x)[2]), m>y m>=seq(dim(m>y m>)[2]), z=COR, xlab="x column", m>y m>lab="m>y m> column")
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List comprehension with if statement
I want to compare 2 iterables m>and m> print the items which appear in both iterables.
4 Answers
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How to sort a dataframe bm>y m> multiple column(s)
...1 Hi A 8 1
3 Hi A 9 1
R>
rather than using the name of the column (m>and m> with() for easier/more direct access).
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Finding row index containing maximum value using R
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@bartektartanus m>And m> how do m>y m>ou suppose which.max figures out the max? :p
– Nick Ulle
Nov 29 '14 at 23:30
10
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Pm>y m>thon logging: use milliseconds in time format
... can not be fixed bm>y m> specifm>y m>ing a datefmt because ct is a time.struct_time m>and m> these objects do not record milliseconds.
If we change the definition of ct to make it a datetime object instead of a struct_time, then (at least with modern versions of Pm>y m>thon) we can call ct.strftime m>and m> then we can u...
Dealing with float precision in Javascript [duplicate]
... I want to group them bm>y m> rounding them down to the nearest multiple of x m>and m> convert the result to a string.
5 Answers
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Preserving signatures of decorated functions
...rect signature on Pm>y m>thon 3.4. Whm>y m> do m>y m>ou think functools.wraps() is broken m>and m> not IPm>y m>thon?
– jfs
Jan 5 '16 at 4:35
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Setting different color for each series in scatter plot on matplotlib
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I don't know what m>y m>ou mean bm>y m> 'manuallm>y m>'. m>Y m>ou can choose a colourmap m>and m> make a colour arram>y m> easilm>y m> enough:
import numpm>y m> as np
import matplotlib.pm>y m>plot as plt
import matplotlib.cm as cm
x = np.arange(10)
m>y m>s = [i+x+(i*x)**2 for i in range(10)]
colors = cm.rainbow(np.linspace(0, 1, len(m>y m>s)))
f...