multidimensional-array

Populate array from vector

Hi, I would like to populate an 2 dimensional array, from a vector. I think the best way to explain myself is to put some examples (with a array of [3,5] length). When vector is: [1, 0] [ [4, 3, 2, 1, 0], [4, 3, 2, 1, 0], [4, 3, 2, 1, 0] ] When vector is: [-1, 0] [ [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], [0, 1, 2, 3, 4] ] ...

C - Discard the edges of an arbitrary level of a multidimensional array

I have some geographical data, that I'm trying to parse into a usable format. The data is kept in NetCDF files, and is read out as a multidimensional array. My problem comes because the source of the geographical data has a strip of longitude on each side of the grid that overlaps the other side. That is, I have a longitude point of -1 d...

How to get an array to check in the in_array function? See description Below...

I am fetching the data using mysql_fetch_array like : while($row = mysql_fetch_array($select)) { $tables[] =$row; } Now i need this $tables array as one dimensional array only, so that i can use it in if(in_array($val['table_name'],$tables)) { //Some Code } to check for whether the $val['table_name'] is ...

Need to add an array into another array at a specified key value

Ok, I have an array like so, but it's not guaranteed to be laid out in this order all of the time... $array = array( 'sadness' => array( 'info' => 'some info', 'info2' => 'more info', 'value' => 'value', ), 'happiness' => array( 'info' => 'some info', 'info2' => 'more info', 'v...

Is there a method in java that can take 2 numbers and give you the numbers that are in between them(Ranges)?

I read in a file with a few numbers using a scanner, and then split them using the split method. My main issue is if there is a method that can just give me ranges, probably in the math class. The numbers are currently in an array, and I wanna move those numbers and there ranges into a two-dimensional array. Could anyone give me some tip...

Printing a 2D array in C

how would I print a 2d array in c using scanf for user input, array called grid[ ][ ] and a for loop? say if the user types in 3 5, the output will be: ..... ..... ..... Here is the code that I have written so far (newbie here): #include <stdio.h> #define MAX 10 int main() { int grid[MAX][MAX]; int row, col; int i,j; ...

Array of Arrays in C#

I need to know how to initialize array of arrays in C#.. I know that there exist multidimensional array, but I think I do not need that in my case! I tried this code.. but could not know how to initialize with initializer list.. double[][] a=new double[2][];// ={{1,2},{3,4}}; Thank you PS: If you wonder why I use it: I need data str...

Figure out if element is present in multi-dimensional array in python

I am parsing a log containing nicknames and hostnames. I want to end up with an array that contains the hostname and the latest used nickname. I have the following code, which only creates a list over the hostnames: hostnames = [] # while(parsing): # nick = nick_on_current_line # host = host_on_current_line if host in hostname...

loading data from file into 2d array

I am just starting with perl and would like some help with arrays please. I am reading lines from a data file and splitting the line into fields: open (INFILE, $infile); do { my $linedata = <INFILE>; my @data= split ',',$linedata; .... } until eof; I then want to store the individual field values (in @data) in and array so that the ar...

Passing 2D part of a 3D multidimensional array as a 2D method parameter array in C#

What I would like to do in my code is something like that below: public static class DataClass { public static byte[,,] Array3d = { { {0,0},{0,0}},{{0,0},{0,0}}}; } class MyClass { public MyClass() { someMethod(DataClass.Array3d[0]); someMethod(DataClass.Array3d[1]); } void someMethod(byte[,]) ...

What is the fastest way to Initialize a multi-dimensional array to non-default values in .NET?

How do I initialize a multi-dimensional array of a primitive type as fast as possible? I am stuck with using multi-dimensional arrays. My problem is performance. The following routine initializes a 100x100 array in approx. 500 ticks. Removing the int.MaxValue initialization results in approx. 180 ticks just for the looping. Approximatel...

Objective-C why doesn't my array of array works?

This is probably a completely stupid question, but i'm pretty new at objective-C and programing in general. i'm trying to make an array of arrays but can't manage to make it work : @interface ArraysAndDicts : NSObject { NSMutableArray * mySimpleArray; NSMutableArray * myComplicatedArray; } the implementation : -(void)generateValueF...

C# multi-dimensional array, ArrayList, or hash table?

hello, I'm trying to figure out how to build a multi-dimensional "array" that is: flexible size use 2 keys 1st key is int (flexible) 2nd key is string (kind of limited) The use will be like: console.writelen(array[0]["firstname"]); console.writelen(array[0]["lastname"]); console.writelen(array[0]["phone"]); console.writelen(array[...

How to add values in multidimensional array?

I have a array like the bellow. Array ( [1] => Array ( [TotalPosts] => 46 [AgentSchemeNumber] => 11 [AgentName] => Vaiji ) [2] => Array ( [TotalPosts] => 3 [AgentSchemeNumber] => 22 [AgentName] => Vaiji ...

2 dimensional array

we have these arrays.... $cities = array("nagpur","kanpur","delhi","chd","Noida","mumbai","nagpur"); $names = array("munish","imteyaz","ram","shyam","ankit","Rahul","mohan"); now i want a 2 dimensional array with name of city as key and all the corresponding names as its values. <?php $cities = array("nagpur","kanpur","nagpur","delhi...

Elegant way to aggregate multi-dimensional array by index key

How can I recursively find the total value of all children of an array that looks something like this? [0] => Array ( [value] => ? // 8590.25 + 200.5 + 22.4 [children] => Array ( [0] => Array ( [value] => ? // 8590.25 + 200.5 ...

fastest way to get parent array key in multidimensional arrays with php

what is the best way to get parent array key with multidimensional arrays? for example I have this array: array( [0] => array(0=> sample, 1=>picture, 2=>frame, 3=>google) [1] => array(0=> iphone, 1=>orange, 2=>love, 3=>msn) [2] => array(0=> joe, 1=>geee, 2=>panda, 3=>yahoo) ) now I need to search for example google and ...

Multidimensional each

How would I do something like below? [ 'foo' ['bar', 'baz'], [ 'one', ['two', 'three'] ] ].each { |word| puts word } # I want this to return: foo bar baz one two three ...

Subplots of multidimensional arrays in Matlab

I have a 10x10x10 array, z. How do I plot everything in the SAME window so that I would have the 3 plots for z(:,:,1) and below it the three plots for z(:,:,2) etc.? This is what I have so far: for i = 1:10 z=z(:,:,i); figure(i) subplot(1,2,1) surf(z) %code, obtain new array called "new1"... subplot(1,2,2) surf(new1) %code,...

Problem intialising 2D array

Ok, so I have a 2D Array that is initialised with values from a file (format: x y z). My file reads in the values correctly but when adding the z value to the matrix/2DArray, I run into a segfault and I have no idea why. It is possibly incorrect use of pointers? I still don't quite have the hang of them yet. This is my intialiser, wor...