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Increase number of axis ticks
...continuous. For example:
library(ggplot2)
dat <- data.frame(x = rnorm(100), y = rnorm(100))
ggplot(dat, aes(x,y)) +
geom_point()
Gives you this:
And overriding the scales can give you something like this:
ggplot(dat, aes(x,y)) +
geom_point() +
scale_x_continuous(breaks = round(seq(m...
How can I use numpy.correlate to do autocorrelation?
...nction, is to itself at a certain time difference. At a time difference of 0, the auto-correlation should be the highest because the signal is identical to itself, so you expected that the first element in the autocorrelation result array would be the greatest. However, the correlation is not starti...
Detect if stdin is a terminal or pipe?
...
140
Use isatty:
#include <stdio.h>
#include <io.h>
...
if (isatty(fileno(stdin)))
...
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
...
How do I reset a sequence in Oracle?
...
Here is a good procedure for resetting any sequence to 0 from Oracle guru Tom Kyte. Great discussion on the pros and cons in the links below too.
tkyte@TKYTE901.US.ORACLE.COM>
create or replace
procedure reset_seq( p_seq_name in varchar2 )
is
l_val number;
begin
exe...
How can I make gdb save the command history?
...t answer: echo 'set history save on' >> ~/.gdbinit && chmod 600 ~/.gdbinit
Long answer:
Command history is covered in the GDB manual, 22.3 Command History. Create a file $HOME/.gdbinit, change its permissions to 0600, and add the following content:
set history save on
You can se...
Removing ul indentation with CSS
...This code will remove the indentation and list bullets.
ul {
padding: 0;
list-style-type: none;
}
http://jsfiddle.net/qeqtK/2/
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How do you delete an ActiveRecord object?
...like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition: ...
JavaScript exponents
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answered Nov 18 '15 at 20:04
Salvador DaliSalvador Dali
169k116116 gold badges609609 silver badges691691 bronze badges
...
JavaScript moving element in the DOM
...$('div').eq(2));
$('div').eq(1).insertBefore('div:first');
}, 3000 );
});
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