I have a four dimensional array which I am trying to flatten into a single
dimension array:
Dim Array4D(10,10,10,10) as Single
I can create my one dimensional array to be big enough to contain teh data
from the 4D array:
Dim Array2D(Array4D.Length - 1) As Single
Then I populate it like so:
Dim intArray2dIndex As Integer
For t As Integer = 0 To Array4D.GetUpperBound(0)
For x As Integer = 0 To Array4D.GetUpperBound(1)
For y As Integer = 0 To Array4D.GetUpperBound(2)
For z As Integer = 0 To Array4D.GetUpperBound(3)
Array2D(intArray2dIndex) = Array4D(t, x, y, z)
intArray2dIndex += 1
Next
Next
Next
Next
But once I have my 1D array how do I retrieve a value from it using the
original t,x,y,z values? In other words, given a t, x, z and y value that
would describe a position in the 4D array I need to translate that to a
single value that describes the position in the one dimensional array.
Any help on this one?
TIA 4 4340
Just out of interest, if you are trying to represent homogenous coordinates,
why not create a single Vertex class and have an array of Vertices?
public class Vertex
public x, y, z, t as single
end class
Dim myArray(1) as Vertex
for each theVertex as Vertex in myArray
theVertex.x = 10.0
next
"elziko" <el****@yahoo.co.uk> wrote in message
news:OA**************@TK2MSFTNGP10.phx.gbl... I have a four dimensional array which I am trying to flatten into a single dimension array:
Dim Array4D(10,10,10,10) as Single
I can create my one dimensional array to be big enough to contain teh data from the 4D array:
Dim Array2D(Array4D.Length - 1) As Single
Then I populate it like so:
Dim intArray2dIndex As Integer For t As Integer = 0 To Array4D.GetUpperBound(0) For x As Integer = 0 To Array4D.GetUpperBound(1) For y As Integer = 0 To Array4D.GetUpperBound(2) For z As Integer = 0 To Array4D.GetUpperBound(3) Array2D(intArray2dIndex) = Array4D(t, x, y, z) intArray2dIndex += 1 Next Next Next Next
But once I have my 1D array how do I retrieve a value from it using the original t,x,y,z values? In other words, given a t, x, z and y value that would describe a position in the 4D array I need to translate that to a single value that describes the position in the one dimensional array.
Any help on this one?
TIA
On Fri, 24 Jun 2005 15:52:47 +0100, "elziko" <el****@yahoo.co.uk>
wrote: I have a four dimensional array which I am trying to flatten into a single dimension array:
Dim Array4D(10,10,10,10) as Single
I can create my one dimensional array to be big enough to contain teh data from the 4D array:
Dim Array2D(Array4D.Length - 1) As Single
Then I populate it like so:
Dim intArray2dIndex As Integer For t As Integer = 0 To Array4D.GetUpperBound(0) For x As Integer = 0 To Array4D.GetUpperBound(1) For y As Integer = 0 To Array4D.GetUpperBound(2) For z As Integer = 0 To Array4D.GetUpperBound(3) Array2D(intArray2dIndex) = Array4D(t, x, y, z) intArray2dIndex += 1 Next Next Next Next
But once I have my 1D array how do I retrieve a value from it using the original t,x,y,z values? In other words, given a t, x, z and y value that would describe a position in the 4D array I need to translate that to a single value that describes the position in the one dimensional array.
Any help on this one?
TIA
First work out out on paper how you would flatten a 2D array into a 1D
array, and how you would retrieve the array entries given the two
indices. Program your solution and test it.
Next do the same for flattening a 3D array. Test your solution so you
are sure that it works.
After doing that you should be in a position to solve your problem
with a 4D array.
rossum
The ultimate truth is that there is no ultimate truth
A simplified piece of code would be:
offset1 = Array4D.GetUpperBound(1) * Array4D.GetUpperBound(2) * _
Array4D.GetUpperBound(3)
offset2 = Array4D.GetUpperBound(2) * Array4D.GetUpperBound(3)
offset3 = Array4D.GetUpperBound(3)
Each element would be at
value = Array2D((t*offset1) + (x*offset2) +(y*offset3) + z)
Cheers,
Jason
On Fri, 24 Jun 2005 15:52:47 +0100, elziko wrote: I have a four dimensional array which I am trying to flatten into a single dimension array:
Dim Array4D(10,10,10,10) as Single
I can create my one dimensional array to be big enough to contain teh data from the 4D array:
Dim Array2D(Array4D.Length - 1) As Single
Then I populate it like so:
Dim intArray2dIndex As Integer For t As Integer = 0 To Array4D.GetUpperBound(0) For x As Integer = 0 To Array4D.GetUpperBound(1) For y As Integer = 0 To Array4D.GetUpperBound(2) For z As Integer = 0 To Array4D.GetUpperBound(3) Array2D(intArray2dIndex) = Array4D(t, x, y, z) intArray2dIndex += 1 Next Next Next Next
But once I have my 1D array how do I retrieve a value from it using the original t,x,y,z values? In other words, given a t, x, z and y value that would describe a position in the 4D array I need to translate that to a single value that describes the position in the one dimensional array.
Any help on this one?
TIA
> Just out of interest, if you are trying to represent homogenous coordinates, why not create a single Vertex class and have an array of Vertices?
I cannot do this because I am writing to a propriety file format using a 3rd
party DLL requiring me to start with a 1D array of singles. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: Joseph Suprenant |
last post by:
I have an array of unsigned chars and i would like them converted to
an array of ints. What is the best way to do this? Using RedHat 7.3
on an Intel Pentium 4 machine. Having trouble here, hope...
|
by: elziko |
last post by:
I have a four dimensional array which I am trying to flatten into a single
dimension array:
Dim Array4D(10,10,10,10) as Single
I can create my one dimensional array to be big enough to contain...
|
by: VK |
last post by:
A while ago I proposed to update info in the group FAQ section, but I
dropped the discussion using the approach "No matter what color the cat
is as long as it still hounts the mice". Over the last...
|
by: Benjamin M. Stocks |
last post by:
Hello all,
I've heard differing opinions on this and would like a definitive
answer on this once and for all. If I have an array of 4 1-byte values
where index 0 is the least signficant byte of a...
|
by: Pedro Graca |
last post by:
I run into a strange warning (for me) today (I was trying to improve
the score of the UVA #10018 Programming Challenge).
$ gcc -W -Wall -std=c89 -pedantic -O2 10018-clc.c -o 10018-clc...
|
by: lvpaul |
last post by:
Hello !
I am calling a .NET Webservice and getting back a ADO.NET Datatset.
How can I convert this to an PHP-Array ?
$ergebnis = $m_service->call( $function, $data );
print_r($ergebnis)...
|
by: Gerrit |
last post by:
Hi all,
I'm getting an OutOfMemoryException when I initialize a byte array in
C# like this:
Byte test = new Byte;
I'm using ASP.NET 2.0. In ASP.Net 1.1 it works fine. So what am I doing...
|
by: Je-Givara |
last post by:
i read in some books that the array address in Unique
Could any one explain me and show that array addressing is unique.
Thanks for advance!
|
by: Peter Olcott |
last post by:
http://groups.google.com/group/comp.lang.c++/msg/a9092f0f6c9bf13a
I think that the operator() member function does not work correctly, does
anyone else know how to make a template for making two...
|
by: Miles |
last post by:
Hi all,
Wondering if anyone can help me. If i have an associative array:
$arr = array(
"one" =array(1, 2, 3),
"two" =array(5, 6),
"three" =array(7,8,9,10)
....
"n" =array(p,q,r....)
|
by: DolphinDB |
last post by:
Tired of spending countless mintues downsampling your data? Look no further!
In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
|
by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
|
by: Vimpel783 |
last post by:
Hello!
Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
|
by: jfyes |
last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
|
by: PapaRatzi |
last post by:
Hello,
I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
|
by: CloudSolutions |
last post by:
Introduction:
For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
|
by: Defcon1945 |
last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
|
by: af34tf |
last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
|
by: Faith0G |
last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
| |