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Finding row index containing maximum value using R
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See ?order. You just need the last index (or first, in decreasing order), so this should do the trick:
order(matrix[,2],decreasing=T)[1]
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Android studio Gradle icon error, Manifest Merger
... versions of android 2.0. not working. Whoever answered should update this Q if he meant saving generations else it will be useless soon
– Karue Benson Karue
Jun 21 '16 at 22:43
3
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How to get item's position in a list?
I am iterating over a list and I want to print out the index of the item if it meets a certain condition. How would I do this?
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How exactly does the callstack work?
...propriately to optimize their alignment so the processor can fetch them as quickly as possible. The crucial fact is that the offset of the variables relative to some fixed address is constant throughout the lifetime of the frame - so it suffices to take an anchor address, say, the address of the fra...
How can I get the line number which threw exception?
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{
var lineNumber = 0;
const string lineSearch = ":line ";
var index = ex.StackTrace.LastIndexOf(lineSearch);
if (index != -1)
{
var lineNumberText = ex.StackTrace.Substring(index + lineSearch.Length);
if (int.TryParse(lineNumberText, out lineNumber))
{
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Get domain name from given url
...URL("http://example.com:80/docs/books/tutorial"
+ "/index.html?name=networking#DOWNLOADING");
System.out.println("protocol = " + aURL.getProtocol()); //http
System.out.println("authority = " + aURL.getAuthority()); //example.com:80
System.out.println("host = " + a...
Way to ng-repeat defined number of times instead of repeating over array?
... function needed):
<li ng-repeat="x in [].constructor(number) track by $index">
<span>{{ $index+1 }}</span>
</li>
$scope.number = 5;
This was not possible at the time the question was first asked. Credit to @Nikhil Nambiar from his answer below for this update
Origina...
How to get the index of a maximum element in a numpy array along one axis
...>>> a = np.array([[1,2,3],[4,3,1]])
>>> i,j = np.unravel_index(a.argmax(), a.shape)
>>> a[i,j]
4
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PostgreSQL - fetch the row which has the Max value for a column
... cost estimate of 745k (!), and completes in 1.3 seconds (given a compound index on (usr_id, trans_id, time_stamp))
Bill's query has a cost estimate of 93k, and completes in 2.9 seconds (given a compound index on (usr_id, trans_id))
Query #1 below has a cost estimate of 16k, and completes in 800ms (...
#1071 - Specified key was too long; max key length is 767 bytes
...een increased to 3072 bytes.
You also have to be aware that if you set an index on a big char or varchar field which is utf8mb4 encoded, you have to divide the max index prefix length of 767 bytes (or 3072 bytes) by 4 resulting in 191. This is because the maximum length of a utf8mb4 character is fo...