**vector of vector of vectors**Hi,
I'm having a problem that's driving me nuts right now.
I wanted to represent data as a
vector<vector<vector<unsigned short> > >
Now I've been having alot of trouble initializing and
accessing elements for that type.
I can't seem to initialize like blah(10,10,10) to make each
vector length 10, so instead I did blah(10,(10,10)) but even
though that compiles I get runtime errors if I ever do
something likeblah.at(i).at(j).at(k), no matter what the
values of i j and k.
Is there a clean way to do what I want it to do or should I
just not try it this wa...

**Remove an item from a vector and write to file the contents of the Vector**Hi all,
I am currently developing a java application that has to deal with it
reading ina CSV file and populating the data that is inside the CSV
file into a vector and then places what is inside the Vector into a
JList.
When the user selects an item from the JList and then they press the
delete button the item that they selected would get removed from the
JList. Once the item has been removed from the JList I then want the
application to write the information that is left inside the vector to
a file without it having any commas or square brackets etc.
I am fairly new to Java and therefore ...

**issues with vector of vector of vectors**Gurus,
Is this possible to do? Do any of you see any issues?
typedef pair<string, string> myPair;
typedef vector<myPair> myPairVector;
typedef vector<myPairVector> myPairVectorColl;
typedef vector<myPairVectorColl> myPairVectorCollCollection;
Now when I initialize a variable of myPairVectorCollCollection, the
size of this vector is unusually large( both in the debug as well as
release versions )
And when I look at the stack trace during debugging, I am going
nuts...this is how it shows up( even though the vector has only two
elemts):
_Mylast = [3291966109]([...](),[...

**Vector of vector or matrix of vector**Hi all;
I want to have a vector which each component of vector.
For example I want to have vector of n random matrix of dimension m.
How to get this??
Thanks
Hypermatrices (help hypermatrices) should be the answer.
Eric.
On Apr 18, 8:44 pm, high-sco...@caramail.com wrote:
> Hi all;
> I want to have a vector which each component of vector.
> For example I want to have vector of n random matrix of dimension m.
>
> How to get this??
>
> Thanks
...

**A Vector of Vectors**Hi,
This problem could just as easily generalize to a vector of matrices. Here it is,
I am having a bit of difficulty constructing a vector of vectors of varying lengths. That is,
T1 is a mx1 vector
T2 is a nx1 vector
..
..
..
TX is a zx1 vector
where X,m,n,z are all positive integers. Ideally, if these were all the same length, I would just construct T = [T1 T2 ... TX] such that I could access Tj with T(:,j). But if these vectors are different lengths, how would I efficiently put them into one vector or cell such that I could index each vector easily? I realize I could zero pad each one ap...

**vector of vectors**I wanted to make a vector of vectors of int so I tried following :
#include<iostream>
#include<vector>
int main()
{
vector<vector<int> >vec;
for(int i=0;i<2;i++)
{
vector<int>newVec;
vec.push_back(newVec);
for(int j=0;j<3;j++)
{
std::cin>>num;
vec[i].push_back(num); // Here vec[i] works but newVec.push_back
(num) doesn't work. Why?
}
}
}
happy wrote:
> I wanted to make a vector of vectors of int so I tried following :
>
> #include<iostream>
> #include<vector&g...

**Vectors in a vector**Hi all,
How can i have a vector like: v=[1, 3, [1, 5]]? it cann't work to have
this vector by u=[1, 5] and v=[1, 3], and v(1, 3)=u. It'll appear the
error message:
??? Subscripted assignment dimension mismatch.
Can anyone help me with that?
Thanks a lot.
Samuel@Taiwan
On Wed, 20 Sep 2006 18:39:13 -0700, samuel wrote:
> Hi all,
>
> How can i have a vector like: v=[1, 3, [1, 5]]? it cann't work to have
> this vector by u=[1, 5] and v=[1, 3], and v(1, 3)=u. It'll appear the
> error message:
>
> ??? Subscripted assignment dimension mismatch....

**vector::size_type**Is std::vector<T>::size_type guaranteed to be the same type as
std::vector<U>::size_type?
To be more explicit, given
void f(T, U);
and
std::vector<T> vt;
std::vector<U> vu;
which have the same size, can I write
for (std::vector<T>::size_type i = 0; i < vt.size(); ++i) f(vt[i],
vu[i]);
or should I write
for (std::vector<T>::size_type i = 0; i < vt.size(); ++i) f(vt[i],
vu[static_cast<std::vector<U>::size_type>(i)]);
Thank you.
On 2007-10-09 23:18, t.hall@liv.ac.uk wrote:
> Is std::vector<T>::size_type guaranteed to be t...

**Vector of Vectors.**I'm having a bit of trouble manipulating an element of a vector of
vectors. I'm using GNAT GPL 2008. Here is a small program to illustrate
the issue:
with Ada.Containers.Vectors;
procedure Check is
package Integer_Vectors is
new Ada.Containers.Vectors
(Index_Type => Natural,
Element_Type => Integer);
package Nested_Vectors is
new Ada.Containers.Vectors
(Index_Type => Natural,
Element_Type => Integer_Vectors.Vector,
"=" => Integer_Vectors."=");
IV : Integer_Vectors.Ve...

**Free memory allocate by a STL vector, vector of vector, map of vector**Hi,
I have the following code which frees memory allocate by a STL vector,
vector of vector, map of vector.
I would like to know if I indeed free all the memory (i.e. no memory
leak).
Thanks for any advice:
/* From Effective STl */
struct DeleteObject {
template<typename T>
void operator()(const T* ptr) const {
delete ptr;
}
};
typedef vector<A*> AVector;
// free a vector of 'A*'
void f4(AVector& aVector) {
for_each(aVector.begin(), aVector.end(), DeleteObject());
aVector.clear();
}
// free a vector of vector of 'A*'
void f4(vector<AVector*&...

**explicit ctor in vector**In the standard library vector, the ctor
explicit vector::vector(size_type __n)
is declared as explicit. I am unable to get
the reason for it being declared as explicit.
Kindly clarify with an example.
Does the standard require that this ctor should be
declared explicit ?
Also, please let me know if there are any guidelines
for identifying which 'one argument ctors' need to be
declared as explicit.
Thanks
V.Subramanian
subramanian100in@yahoo.com, India wrote:
> In the standard library vector, the ctor
> explicit vector::vector(size_type __n)
>
> is declared as explici...

**Matching Items in a vector**Hi -
I was using two arrays to go through two lists of numbers in the same
format, such as below:
The numbers are always 15 numbers followed by some text. I ONLY care
about the first 15 numbers, not the text.
100121242110124ABC 000121241000124ABC
000121236300124ABC 000121236300124ABC
005151533414124ABC 001121231009909ABC
000124576700188ABC 123516800785656ABC
I had passed both sets of numbers into two separate arrays, and was
able to use the regionMatches method to compare the first 15 numbers to
find duplicates. I want to be able to remove any duplicates from t...

**how to ensure that a vector is a column vector or row vector?**I don't have to ask this if the Matlab is smart enough; but it isn't.
for example,
x./y
if x is a row vector and y is column vector, or vice versa, the Matlab will
report error...
So I want to know a way to ensure that a vector is column vector or a row
vector...
Thansk
If you just want everything to be the same (row or column)
a = rand(100,1);
b = rand(1,100);
a = a(:);
b = b(:);
Mike wrote:
>
>
> I don't have to ask this if the Matlab is smart enough; but it
> isn't.
>
> for example,
>
> x./y
>
> if x is a row vector and y is column ...

**Shutdown Items -- Startup Items -- Wakeup Items ???**Do Wakeup Items (wake up from Sleep) exist? Could they?
...

**Coarray**Hi,
I am going to write a coarray implementation of a sparse
iterative solver.
Are there any comparisons/notes on different
array/vector or vector/vector multiplications implementations?
I read that, for vector/vector a binary tree reduction sum in
coarray is a good choice.
But what about array/vector implementations?
Thank you
Jan
On Thursday, November 20, 2014 11:20:44 AM UTC+1, Jan Wittke wrote:
> I read that, for vector/vector a binary tree reduction sum in
> coarray is a good choice.
> But what about array/vector implementations?
Just a side remark: The upc...

**vector within a vector**It's late. Why is the compiler saying that this is the wrong syntax:
vector<vector<cIndicatorValue>> ranks;
One other question:
If I want to access one of cIndicatorValue's functions, I have to
declare a vector iter, right? Can I add an integer to an a vector iter
to move it through the array?
Angela wrote:
> It's late. Why is the compiler saying that this is the wrong syntax:
>
> vector<vector<cIndicatorValue>> ranks;
Because the '>>' immediately after the cIndicatorValue is being
interpretted as an operator. Try using whites...

**Vector index into vector**In general, if A is an array, and V is a vector used to index into A
(via linear indexing), then the shape of A(V) is equal to the shape
of V itself.
However, if A is a row vector, then A(V) will be a row vector
regardless of whether V is a row or column vector. Similarly, if A
is a column vector, then A(V) will be a column vector.
[I hope that made sense!]
Is there some rationale behind that seeming inconsistency? Is there
any clever way to ensure that A(V) is always the shape of V? The
best I can come up with is:
>> reshape(A(V),size(V))
...

**vector of vectors #2**Hi,
I've created a vector of vectors of ints, and I want to pass it as a
parameter to a function. Is this possible, and if so, then what is the
syntax like for the function header and function prototype when I need
to specify the variable type?
Thank you,
N.
"Nancy Keuss" <muse188@aol.com> wrote...
> I've created a vector of vectors of ints, and I want to pass it as a
> parameter to a function. Is this possible, and if so, then what is the
> syntax like for the function header and function prototype when I need
> to specify the variable type?
By value:
...

**Sizing a vector of vectors**
Hello,
I'm trying to size a vector of vectors of unsigned ints to be an NxN square.
Here's how I'm doing it:
typedef vector<vector<unsigned int> > tournament_type;
unsigned int n;
tournament_type tournament;
// Go get a value for n...
tournament.resize(n);
for_each(
tournament.begin(),
tournament.end(),
bind2nd(mem_fun1(&tournament_type::value_type::resize), n)
);
On the platform I'm on (VC++ 7.1), I get an internal compiler error. Before
I go over to the VC++ group, I'd like to make sure this code should...

**Problem with deleting vector items**Hi.
I got a problem with deleting items of a vector. I did it like this:
void THIS::bashDelPerson() {
cout << "Bitte Suchstring eingeben: ";
char search[128];
cin >> search;
vector<Person>::iterator iter;
iter = persons.begin();
Person* person;
while ( iter != persons.end() ) {
if ( strstr(iter->getFirstName(), search) != 0 ) {
persons.erase(iter);
}
cout << "Moep\n";
if(iter != persons.end()){iter++;}
}
}
But this implementation only works if the Person, which should be deleted is
the last one. If it is followed by another...

**Directly Modify Vector Item**Is it possible to directly manipulate an item within a Vector (or anyother AbstractCollection).Basically, I retrieve and manipulate vectors in the following way:Vector myVec = new Vector();// populate...for (int i = 0; i < myVec.size; i++) { String myStr = (String)myVec.get(i); myStr = "String " + i; myVec.setElementAt(myStr, i);}While arrays can simply modify directly:for (int i = 0; i < myVec.size; i++) { myArray[i] = "String " + i;}The first method seems cumbersome and inefficient, especially whenusing a class other than a String (one with many modifications to...

**Creating a vector out of other vectors**Hi,
I have the following problem:
library ieee;
use ieee.std_logic_1164.all;
entity test is
port(ep_to_send : in std_logic_vector(3 downto 0);
addr_to_send : in std_logic_vector(6 downto 0);
data_valid_to_send : in std_logic;
direction_to_send : in std_logic
);
end test;
architecture rtl of test is
signal test_vector: std_logic_vector(9 downto 0);
begin
test_vector <= (addr_to_send(4 downto 0) & ep_to_send &
data_valid_to_send);
end rtl;
Is this legal in VHDL? Will the new vector be composed correctly?
Thank...

**Vector of vector question**If I create a vector of vectors of double:
std::vector< std::vector<double> > table1;
Are my vectors of doubles uninitialized? Do I have to loop through table1
and initialize each vector of doubles using new?
And in cleaning up, manually delete each of these vectors of doubles?
Thanks,
B
"BCC" <bryan@akanta.com> wrote in message
news:gvHMb.9111$wP1.6082@newssvr27.news.prodigy.com...
> If I create a vector of vectors of double:
>
> std::vector< std::vector<double> > table1;
>
> Are my vectors of doubles uninitialized?
No. They ar...

**fitting vectors with other vectors**Hi I am stuck in trying to fit a spectrum (S) with two other spectra (A and B) which I already know to be combined in S.
i.e. I want to use two vectors (A and B) to fit a third vector S, which is a linear combination of A and B.
How can I say thus that S= a*A + b*B, and get the coefficients (a and b) of the linear combination? I guess the problem here is that I don't have an indipendent variable...
Many thanks for your help
DG
"damiano Genovese" <damianogeno@libero.it> wrote in message <i9hj4o$gc0$1@fred.mathworks.com>...
> Hi I am stuck in trying to fit a s...