but if the matrix is compressed_matrix type, there's something with it. the error log as below:
Check failed in file boost_1_48_0/boost/numeric/ublas/detail/matrix_assign.hpp at line 1078:
detail::expression_type_check (m, cm)
terminate called after throwing an instance of 'boost::numeric::ublas::external_logic'
what(): external logic
Aborted
I am using boost matrix for generating matrices used for filters. I wan to assign a pointer to these matrices so i can call them out of the function. but i am not able to understand where i am failing. the example code is here.
I just want to know the code of the program: Write code to accept matrix as aurgument and display its multiplication matrix which return its multiplication matrix.
First index of the second line tells the number of non-zero entries of the first row and second index tell the column number where the non zero entry is placed
Is there an easy way to compute the indexes given the value? For example, I know that the first index can be found by dividing the value by 9.0: Code: const int firstIndex = ceil(value / 9.0) - 1; What about the second and the third indexes? I couldn't find a pattern in the numbers, and I didn't want to iterate through the matrix (the indexes will be calculated many times).
The other option is to create arrays where the values will be indexes and the matrix indexes will be the values. I'm not sure if it is the best way though
I've a code and it works on my linux laptop; however it doesnt work on a matrix server. Im getting error Code: file.c: In function CondCheck:file.c:40:3: warning: this decimal constant is unsigned only in ISO C90 [enabled by default] The code of the programme
Code:
#include <stdio.h> #include <string.h> #include <math.h> /*DECIMAL TO BINARY CONVERTER*/ int BinaryConverter (int bina) }
This is my code without malloc. I need to change the array size so there is no max size for each matrix. I must dynamically allocate space for all arrays used. So I need to use malloc to create my arrays. So I cant use int A[rows][cols].
Code:
/* This program asks the user for 2 matrices called A and B, as integers, and displays their sum, C. The max dimension of each matrix is 100. */ #include<stdio.h> // Construct function void construct() { int m, n, i, j;// Variables int first[100][100], second[100][100], sum[100][100];// Matrices variables
[Code]...
Im having a hard time understanding/using malloc. Should first, second, and sum be single pointers or double? How do I scan the matrix correctly? And how do I add them properly? Do I have to change my for loops?
Code:
/* This program asks the user for 2 matrices called A and B, as integers, and displays their sum, C. The max dimension of each matrix is 100. */ #include <stdio.h> #include <stdlib.h> // Construct function void construct()
1. Input an dimension and elements of an array from the keyboard. Count the odd elements of an array and that number join to variable K, then sort the last K elements in decreasing order.
Code: #include <stdio.h> main () { int A[100], i, n, j, K = 0; printf ("Type in the dimension of an array: "); scanf ("%d", &n);
I have a adjacency matrix. (router adjacency matrix in network). The result should be the router ID.I mean, print all the possible paths from source router to target router(ROUTER id>> 1 - 2 - 3 - 4 so there are four one router). I get the error in the output.)
Code: #include<stdio.h> #include<conio.h> /* graph: Pointer to the starting of mXn matrix i, j: Current position of the robot (For the first call use 0,0) m, n: Dimentions of given the matrix pi: Next index to be filed in path array
The method doesn't work properly, the point of the code is to tell the minimum value in the given matrix "m", it's supposed to take the first value of the matrix store it in min_ and then compare it to every value of the matrix, if the value stored in min_ is bigger than the current value in the loop then it's stored as the new min_ and at the end it's supposed to print that minimum...
Code: #include <stdio.h> #include <stdlib.h> #define SIZE 3 void minimum (int mat[SIZE][SIZE]){ int r,c; int min_; printf("
My purpose is to fill a matrix with random numbers. As you can see in the code, I defined a matrix called sim_matrix (which should be filled), but the dimensions of such matrix is given by the parameters that we introduce in the constructor. Because we don't know the size of such matrix until we give these parameters through the constructor. I'd like to know how to declare such matrix, or how to modify the size,...
The header of my file MonteCarlo.h is:
/* MonteCarlo.h */
#ifndef MONTECARLO_H_ #define MONTECARLO_H_ using namespace std; class MonteCarlo { public: MonteCarlo(int n_paths, int n_simulations);
It is getting more and more annoying, everytime i progress the next hurdle is just bigger. The problem is i want to calculate inverse of a matrix but using .inv gives a matrix full of -1.#QNAN values so i decided to write one my self
a function which returns the inverse matrix but something strange happens.
when i debug through the function code it works well and check the matrix that will be returned and the elements are correct.
when the function is called and output matrix is resulted. the element of the matrix is different.
I have written a program, in which I create a NxN-matrix. As I need some different samples (some different such NxN-matrices), I try to create a new matrix in each recall of a while-loop. The first recall of the while-loop works without any problems, but the second recall crashes, but I get any errors from the compiler. Here is my quell code. The problem should be with line 44:
I'm implementing a 4x4 matrix class and all is going well until the inverse function turned up. I'm trying to implement the inverse function, but I can't seem to get my head around it.
I've tried the internet, but found nothing useful. Also, I've looked into source code of other programs/libraries that implement a matrix class, but the code is unreadable.
How I can implement this damn 4x4 inverse function? I know the process of inversion, but putting that process into code is proving quite a challenge.
In addition, I do have some code, but it's unmanageable and inefficient at the moment. If you want to see it, just ask.
Additional question(s): What applications does the inverse matrix have in 3-D?
