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Reshaping data.frame from wide to long format
...ou can use the same melt function as in the reshape2 package (which is an extended & improved implementation). melt from data.table has also more parameters that the melt-function from reshape2. You can for example also specify the name of the variable-column:
library(data.table)
long <- mel...
How do I write JSON data to a file?
... - data is a dictionary and not yet JSON-encoded. Write it like this for maximum compatibility (Python 2 and 3):
import json
with open('data.json', 'w') as f:
json.dump(data, f)
On a modern system (i.e. Python 3 and UTF-8 support), you can write a nicer file with
import json
with open('data....
Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
...
I had to add setenv("GNUTERM","X11") to OCTAVE_HOME/share/octave/site/m/startup/octaverc (OCTAVE_HOME usually is /usr/local) to make it work permanently.
Solution found and more details on: http://www.mac-forums.com/forums/os-x-apps-games/242997-plots-oct...
How to round float numbers in javascript?
I need to round for example 6.688689 to 6.7 , but it always shows me 7 .
17 Answers
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“You have mail” message in terminal, os X [closed]
...g associated with an Alfred Workflow [at a guess]) made a change to the OS X system to start presenting Terminal bash notifications. Prior to that, it appears Wordpress had attempted to use the Local Mail system to send a message. The message bounced, due to it having an invalid Recipient address. T...
Call a function with argument list in python
... function inside another function in python, but can't find the right syntax. What I want to do is something like this:
6 A...
How to run a method every X seconds
... developing an Android 2.3.3 application and I need to run a method every X seconds .
8 Answers
...
SAML: Why is the certificate within the Signature?
...ou're working with, but in .Net you can check it like this:
// load a new XML document
var assertion = new XmlDocument { PreserveWhitespace = true };
assertion.LoadXml("The SAML XML that you were sent");
// use a namespace manager to avoid the worst of xpaths
var ns = new XmlNamespaceManager(asser...
How to compile for Windows on Linux with gcc/g++?
I have written some effects in C++ (g++) using freeglut on Linux, and I compile them with
7 Answers
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Can you write nested functions in JavaScript?
...
Is this really possible.
Yes.
function a(x) { // <-- function
function b(y) { // <-- inner function
return x + y; // <-- use variables from outer scope
}
return b; // <-- you can even return a function.
}
console.log(a(3)(4));
...