A Boost C++ library directed towards scientific computing on the level of basic linear algebra constructions with matrices and vectors and their corresponding abstract operations.
Questions tagged [boost-ublas]
50 questions
2
votes
1 answer
C++ templates and OpenBLAS
There exist C++ libraries such as Eigen or Boost::uBlas that implement matrix types and computations.
There also exist libraries such as LAPACK, Goto-BLAS, OpenBLAS and ATLAS that implement highly optimized dense matrix computations over…
David Monniaux
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2
votes
1 answer
Writing a Boost ublas matrix to a text file
I have a Boost ublas matrix, and I want to print its contents to a text file. I have the following implementation, and it works.
#include
using namespace std;
#include "boost\numeric\ublas\matrix.hpp"
typedef…
The Vivandiere
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2
votes
1 answer
How to insert an element into ublas matrix with dynamic size
Run time error while trying to insert element in a matrix with size not specified initially.
The below code runs finr for m1 but throws error for m2.
#include
#include
#include …
Shrey
- 1,242
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2
votes
0 answers
C++ using Lapack within boost
While developing a program i used frequently boost UBLAS types for matrices like hermitian_matrix and others.
I need to calculate eigenvalues and as i see UBLAS does not have something related with this. The first solution is to use LAPACK but i do…
Radium
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votes
1 answer
What are matrix expression and vector expresssion classes in Boost.uBLAS?
I have tried reading Boost Documentation, but I don't understand this expression concept. Matrix class inherits a matrix_expression class, I don't understand what is this class used for.
Thank You.
Jignesh
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1
vote
1 answer
g++ compiler option to warn about type conversions with ublas::bounded_vector
Consider the following code:
#include
#include
#include
#include
int main()
{
namespace ublas = boost::numeric::ublas;
double d = M_PI;
unsigned u =…
mkm
- 673
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1
vote
1 answer
How can I sort a Boost matrix by column?
I have a 2d boost matrix (boost::numeric::ublas::matrix) of shape (n,m), with the first column being the timestamp. However, the data I'm getting is out of order. How can I sort it with respect to the first column, and what would be the most…
Calvin K
- 104
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1
vote
1 answer
Boost matrix matrix prod definition
This is a sample code that I'm running or better trying to run. Long story short it is not working as expected.
#include
#include
#include…
Marko Bencik
- 368
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1
vote
1 answer
Encapsulating ublas and overloading the const reference to the operator()
Considering the following toy example, where I declare a class which encapsulates ublas from boost libraries:
#include
#include
namespace ublas = boost::numeric::ublas;
class UblasEncapsulated…
aaamourao
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vote
2 answers
Constant matrix with boost ublas
I would like to define a constant 3x3 matrix with boost like this and it will never change during the execution:
[1 2 3
4 5 6
7 8 9]
This matrix will be a member of a class. So, can I define and initialize a constant matrix variable as a class…
simon_tulia
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1
vote
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How to load CSR matrix directly into boost compressed_matrix?
I want to transfer a matrix from application A (using matrix in LDU format) to application B (using the boost ublas compressed_matrix, CSR format).
I have a function converting the LDU format to CSR format. The ldu2csr function provides me with the…
Klausb
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1
vote
1 answer
Does Boost provide a facility for printing uBLAS datatypes?
I'm debugging an application that massively uses uBLAS vectors and matrices. I would like to print them to console with something like:
boost::numeric::ublas::vector v;
// ...filling v...
std::cout << v; // or boost::whatever << v;
Exact…
Sergey
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vote
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boost multiprecision + numeric bindings + LAPACK
I'm trying to implement some numeric procedures using the boost multiprecision template library in combination with numeric bindings for a lapack backend.
However, the template resolution doesn't seem to work as intended. I've been able to narrow…
carsten
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1
vote
1 answer
Error in using Boost Ublas lu_Factorize
I am trying to make a fun project which makes a matrix power function
using BOOST Ublas.It is very similar to this Numpy library power function for matrix It uses matrix exponentiation to compute the nth power of a matrix in logarithmic time.
It…
ArafatK
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CLMath instead of Boost with PyOpenCL
When I run configure.py during PyOpenCL setup, the only libs to direct to are boost and OpenCL. Is it possible to Install CLMath (from AMD) and use that instead of uBLAS/BOOST?
I realize that BOOST is no longer required since V0.92, yet the config…
gustable
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