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Published on 2010-04-21T06:21:20Z
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2010/04/21
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how to transpose a 2D matrix in place?
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Forgive me if this is redundant or super basic. I'm coming to Python/Numpy from R and having a hard time flipping things around in my head.
I have a n dimensional array which I want to sort using another n dimensional array of index values. I know I could wrap this in a loop but it seems like there…
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Hello,
I'm trying to sort a multidimensional array in objective-c i know that i can sort a single dimensional array using the line of code below:
NSArray *sortedArray = [someArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
I can't seem to figure out how to sort a 2D array like…
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Hello,
I am playing around with multidimensional array of unequal second dimension size.
Lets assume that I need the following data structure:
[&ptr0]-[0][1][2][3][4][5][6][7][8][9]
[&ptr1]-[0][1][2]
[&ptr2]-[0][1][2][3][4]
int main()
{
int *a[3];
int *b;
int i;
a[0] = (int *)malloc(10…
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I have a php form that has a known number of columns (ex. top diameter, bottom diameter, fabric, colour, quantity), but has an unknown number of rows, as users can add rows as they need.
I've discovered how to take each of the fields(columns) and place them into an array of their own.
<input…
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I have an array like this:
$a = array (
0 => array ( 'value' => 'America', ),
1 => array ( 'value' => 'England', ),
2 => array ( 'value' => 'Australia', ),
3 => array ( 'value' => 'America', ),
4 => array ( 'value' => 'England', ),
5 =>…
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