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Aggregate / summarize multiple variables per group (e.g. sum, mean)
...he reshape2 package for this task:
require(reshape2)
df_melt <- melt(df1, id = c("date", "year", "month"))
dcast(df_melt, year + month ~ variable, sum)
# year month x1 x2
1 2000 1 -80.83405 -224.9540159
2 2000 2 -223.76331 -288.2418017
3 2000 3 -188.83930 -481....
What is time_t ultimately a typedef to?
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10 Answers
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onchange event on input type=range is not triggering in firefox while dragging
...h from the mouse and the keyboard.
However, oninput is not supported in IE10, so your best bet is to combine the two event handlers, like this:
<span id="valBox"></span>
<input type="range" min="5" max="10" step="1"
oninput="showVal(this.value)" onchange="showVal(this.value)">...
Java lib or app to convert CSV to XML file? [closed]
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How to get an object's property's value by property name?
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edited Feb 20 '15 at 5:17
answered Jan 18 '13 at 19:39
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How to return a value from a Form in C#?
...some public Properties on your sub-form like so
public string ReturnValue1 {get;set;}
public string ReturnValue2 {get;set;}
then set this inside your sub-form ok button click handler
private void btnOk_Click(object sender,EventArgs e)
{
this.ReturnValue1 = "Something";
this.ReturnValue...
jQuery get input value after keypress
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158
This is because keypress events are fired before the new character is added to the value of th...
Getting the location from an IP address [duplicate]
...hostname": "google-public-dns-a.google.com",
"loc": "37.385999999999996,-122.0838",
"org": "AS15169 Google Inc.",
"city": "Mountain View",
"region": "CA",
"country": "US",
"phone": 650
}
Here's a PHP example:
$ip = $_SERVER['REMOTE_ADDR'];
$details = json_decode(file_get_contents("htt...