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Most underused data visualization [closed]
...(quote, as.is=TRUE)
stock.data <- transform(stock.data,
week = as.POSIXlt(Date)$yday %/% 7 + 1,
wday = as.POSIXlt(Date)$wday,
year = as.POSIXlt(Date)$year + 1900)
library(ggplot2)
ggplot(stock.data, aes(week, wday, fill = Adj.Close)) +
geom_tile(colour = "white") +
scale_fill_gradien...
Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
I am making some matrix multiplication benchmarking, as previously mentioned in
Why is MATLAB so fast in matrix multiplication?
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Setting variable to NULL after free
...le that says, after freeing any memory, reset the variable to NULL . For example ...
23 Answers
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What does “hashable” mean in Python?
... if it has hash value now what is hash value. can you give some example
– user1755071
Jan 26 '13 at 9:56
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Correct format specifier to print pointer or address?
...on is in §7.21.6.1 ¶8.)
On some platforms, that will include a leading 0x and on others it won't, and the letters could be in lower-case or upper-case, and the C standard doesn't even define that it shall be hexadecimal output though I know of no implementation where it is not.
It is somewhat op...
Counting the occurrences / frequency of array elements
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How can I uninstall an application using PowerShell?
... Add or Remove Programs ' functionality using PowerShell to uninstall an existing application ? Or to check if the application is installed?
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Why are hexadecimal numbers prefixed with 0x?
Why are hexadecimal numbers prefixed as 0x ?
I understand the usage of the prefix but I don't understand the significance of why 0x was chosen.
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Bash command to sum a column of numbers [duplicate]
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Using existing file:
paste -sd+ infile | bc
Using stdin:
<cmd> | paste -sd+ | bc
Edit:
With some paste implementations you need to be more explicit when reading from stdin:
<cmd> | paste -sd+ - | bc
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Semicolon before self-invoking function? [duplicate]
...ach in few popular jQuery plugins and I'm curious to find if this is the next awesome thing in JavaScript that I don't know.
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