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Remove grid, background color, and top and right borders from ggplot2
...d panel.background to see the axis lines.
library(ggplot2)
a <- seq(1,20)
b <- a^0.25
df <- as.data.frame(cbind(a,b))
ggplot(df, aes(x = a, y = b)) + geom_point() +
theme_bw() +
theme(axis.line = element_line(colour = "black"),
panel.grid.major = element_blank(),
panel.grid.mi...
Convert number to month name in PHP
...e() to create one, like so:
$monthNum = 3;
$monthName = date('F', mktime(0, 0, 0, $monthNum, 10)); // March
If you want the 3-letter month name like Mar, change F to M. The list of all available formatting options can be found in the PHP manual documentation.
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Add column with number of days between dates in DataFrame pandas
...'] - df['B']
In [14]: df
Out[14]:
A B C
one 2014-01-01 2014-02-28 -58 days
two 2014-02-03 2014-03-01 -26 days
Note: ensure you're using a new of pandas (e.g. 0.13.1), this may not work in older versions.
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How does a garbage collector avoid an infinite loop here?
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110
As per Richter in the second edition of CLR via C# (yes I need to update):
Page 478
For (Th...
What is the difference between Numpy's array() and asarray() functions?
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answered Aug 30 '18 at 19:06
abarnertabarnert
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Drop all duplicate rows across multiple columns in Python Pandas
...ort pandas as pd
df = pd.DataFrame({"A":["foo", "foo", "foo", "bar"], "B":[0,1,1,1], "C":["A","A","B","A"]})
df.drop_duplicates(subset=['A', 'C'], keep=False)
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Convert a row of a data frame to vector
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edited Oct 30 '19 at 16:15
answered Jan 23 '13 at 16:42
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How to empty a redis database?
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edited Oct 20 '14 at 6:45
answered Apr 22 '11 at 13:59
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Forcing child to obey parent's curved borders in CSS
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201
According to the specs:
A box's backgrounds, but not its
border-image, are clipped to t...
Format numbers to strings in Python
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140
Starting with Python 3.6, formatting in Python can be done using formatted string literals or f-...