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ggplot2 legend to bottom and horizontal
...ion of the legend please use the following code:
library(reshape2) # for m>me m>lt
df <- m>me m>lt(outer(1:4, 1:4), varnam>me m>s = c("X1", "X2"))
p1 <- ggplot(df, aes(X1, X2)) + geom_tile(aes(fill = value))
p1 + scale_fill_continuous(guide = guide_legend()) +
them>me m>(legend.position="bottom")
This sho...
Rails: Logging the entire stack trace of an exception
I have been trying to figure out the right way to log a stack trace. I cam>me m> across this link which states that logger.error $!, $!.backtrace is the way to go but that does not work for m>me m> log_error does. As per docum>me m>ntation I do not see how passing a second argum>me m>nt to the error m>me m>thod would ...
How do I keep a label centered in WinForms?
In WinForms I am using a Label to display different m>me m>ssages like success, failure, etc.
7 Answers
...
Run an exe from C# code
... Process.Start("C:\\");
}
}
If your application needs cmd argum>me m>nts, use som>me m>thing like this:
using System.Diagnostics;
class Program
{
static void Main()
{
LaunchCommandLineApp();
}
/// <summary>
/// Launch the application with som>me m> options set.
...
Postgresql aggregate array
...
Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.nam>me m>, array_agg(g.Mark) as marks
FROM student s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the columns on SELECT to GROUP BY, e.g. you d...
Why is “origin/HEAD” shown when running “git branch -r”?
..., there's a remote repo on GitHub, say, with two branches: master and awesom>me m>-feature. If I do git clone to grab it and then go into my new directory and list the branches, I see this:
...
How to add 10 days to current tim>me m> in Rails
I tried doing som>me m>thing like
6 Answers
6
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Javascript when to use prototypes
I'd like to understand when it is appropriate to use prototype m>me m>thods in js. Should they always be used? Or are there cases where using them is not preferred and/or incurs a performance penalty?
...
What does a \ (backslash) do in PHP (5.3+)?
...
\ (backslash) is the nam>me m>space separator in PHP 5.3.
A \ before the beginning of a function represents the Global Nam>me m>space.
Putting it there will ensure that the function called is from the global nam>me m>space, even if there is a function by the ...
Boolean.hashCode()
The hashCode() m>me m>thod of class Boolean is implem>me m>nted like this:
2 Answers
2
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