matrix

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efficient computation of Trace(AB^{-1}) given A and B

I have two square matrices A and B. A is symmetric, B is symmetric positive definite. I would like to compute $trace(A.B^{-1})$. For now, I compute the Cholesky decomposition of B, solve for C in the[详细]

2023-04-06 09:03 分类：问答
How to draw a gamemap in console?

Im working on a game, developed in consoleand I have a question of how to draw a map like this in the java console, im using Eclipse and I\'m new in java: My game board is a matrix. Points are spaces[详细]

2023-04-06 05:12 分类：问答
How to send columns of a matrix via Boost MPI using C++ STL vectors?

I want to send multiple columns of a matrix stored as in STL vector form vector < vector < double > > A ( 10, vector <double> (10));[详细]

2023-04-06 04:10 分类：问答
matrix from a matrix matlab

I am trying to get the function to output an array T that has each value inside the fixed outer rows and columns, averaged with itself and the 4 numbers surrounding it. I made X to recieve all 9 of th[详细]

2023-04-05 19:44 分类：问答
Append data from multiple files to matlab array

Hello i need you help to append all the data i read from many files into a matrix. I have made the following script[详细]

2023-04-05 19:29 分类：问答
Most efficient way to store and access a huge data matrix in MySQL

I am going to store a huge amount of matrix data in a mysqlDB what 开发者_开发技巧is the most efficient way to store and access the data?[详细]

2023-04-05 16:38 分类：问答
How to identify which columns are not "NA" per row in a matrix?

I have a matrix with 12 rows and 77 columns, but to simply lets use: p <- matrix(NA,5,7) p[1,2]<-0.3[详细]

2023-04-05 15:39 分类：问答
How can i scan over a square matrices using php / for loop?

I need to write some code using some for-loops which tests the values of some array data. 1st pass: checking the following...[详细]

2023-04-05 10:55 分类：问答
Finding a match in an array using strcmp

im trying to compare words of an array using strcmp.Im trying to get each word that app开发者_开发技巧ears more than once in the array to print out only once, so i can determine the number of unique w[详细]

2023-04-05 10:08 分类：问答
rotating a 3D point around the y axis in matlab

I have been provided with a rotation matrix to use: and have entere开发者_Go百科d the matrix into my function as[详细]

2023-04-05 07:36 分类：问答