Bluebit Software Support Forum / Technical Support and Help / Matrix ActiveX Component / Wrapping methods of MaXC together / Latest PostsInstantForum.NET v4.1.4Bluebit Software Support Forumhttp://www.bluebit.gr/forum/support@bluebit.grThu, 17 May 2012 06:43:08 GMT20<link>http://www.bluebit.gr/forum/Topic54-1-1.aspx</link><description>Did you try this: [code]Set RESULT = W1.Times(A).Times(W2)[/code]Also I cannot see why W1.Times(A.Times(W2)) is not working for you.I have created the following code and all 3 methods return the same result. Please try it in your machine.[code]Private Sub Test() Dim W1 As Matrix, A As Matrix, W2 As Matrix, RESULT As Matrix Dim temp_matrix As Matrix Set W1 = New Matrix W1.Size 1, 4 W1.FillRandom Set A = New Matrix A.Size 4, 4 A.FillRandom Set W2 = New Matrix W2.Size 4, 1 W2.FillRandom ' 1st method (suggested) Set RESULT = W1.Times(A).Times(W2) Debug.Print RESULT.GetString ' 2nd Set RESULT = W1.Times(A.Times(W2)) Debug.Print RESULT.GetString ' 3rd Set temp_matrix = A.Times(W2) Set RESULT = W1.Times(temp_matrix) Debug.Print RESULT.GetStringEnd Sub[/code] I suspect that you have used a variable declaration like this:[code]Dim W1, A As Matrix[/code]In the above declaration variable A is declared as Matrix and variable W1 as Variant.</description><pubDate>Wed, 06 Apr 2005 13:16:51 GMT</pubDate><dc:creator>Trifon</dc:creator></item><item><title>Wrapping methods of MaXC togetherhttp://www.bluebit.gr/forum/Topic54-1-1.aspxHello, I have been wondering if there is a way to wrap together, or nest, several methods of MaXC together, to simplify some work I'm doing. As an example, let's say I have three matrices: matrix W1 is a row vector with 4 elements, matrix A is a 4 x 4 square matrix, and matrix W2 is a column vector with 4 elements. I want to premultiply A by W1 and postmultiply it by W2, with the result then being a single number (call it RESULT). What I tried first was something like: [code]Set RESULT = W1.Times(A.Times(W2))[/code]This did not work. I found that I had to first create an intermediate result for the portion of the above represented by A.Times(W2), with: [code]Set temp_matrix = A.Times(W2)[/code] and then do something like: [code]Set RESULT = W1.Times(temp_matrix)[/code] This means that I also had to dimension, instantiate, and size the matrix "temp_matrix", which is three additional lines of code that it would be nice not to have to worry about. Is there some way to nest the functions together?Thanks! Tue, 05 Apr 2005 12:04:24 GMTanonymous