FFT Performance
@franktore wrote: I'm curioius to know if you use native providers algorithms or purely managed ones for the IntegralTransforms package.The reason I am wondering is that when comparing the Fourier...
View ArticleWrong compute of the matrix rank!
@Lili wrote: For a matrix of 4-by-4, as follows Matrix A = DenseMatrix.OfArray(new double[,] { {4,4,1,3}, {1,-2,1,0}, {4,0,2,2}, {7,6,2,5}});The rank computed with the equation as follow is 3 var...
View ArticleHow to use Cross Product
@Ming_Da wrote: Hello everyone.Recently I try to use Math.net in C# program.today I want to make Cross Product:var v1 = new DenseVector(new[] { 1.0, 2.0, 3.0 }); var v2 = new DenseVector(new[] { 1.0,...
View ArticleExponential Fit
@JWallaceDev wrote: Hi There I've recently used Fit.Polynomial to calculate poly lines - and this worked really well. I'm just wondering if there is something similar to calculate an Exponential fit?...
View ArticleSystem.OutOfMemoryException when doing matrix multiplication
@Lili wrote: When I do matrix multiplication ( C# ), the problem : System.OutOfMemoryException” MathNet.Numerics.dll happens. The equation I use can be simplified as C=AB , where A is a double matrix...
View ArticleNative Provider
@candychiu wrote: Hi Christoph, Did you use MinGW to compile OpenBLAS on Windows? Is there any instruction in the documentation for building the NativeProvider solution? Thanks,Candy Posts: 2...
View ArticleSource code of mathdotnet.numerics
@Sebastien_Fremal wrote: Hello ! I would like to get a look to the source code of the Mathdotnet.Numerics project (more espcially the Distribuion files), but I only find information on how to install...
View ArticleHow to define polynomials and manipulate them?
@Davi_Giugno wrote: I'm pretty new to Math.Net and I must by now do polynomial multiplication efficiently. What I want to know, to be more precise, is 1) How to define a polynomial in terms of its...
View ArticleFit.LinearCombination returns NaN vector
@Raul_m wrote: Hi I'm want to Fit with least squares a and b in this model y=a+b*e^x with this data (Year,Value) 2010 642011 632012 612013 602015 572016 502017 1 I call Math.NET like this double...
View ArticleHadamard / Schur product
@jdelange wrote: Is there a Hadamard or Schur product implementation in MathNet? If not, what would be a work-around? Posts: 3 Participants: 2 Read full topic
View ArticleConvolution of two independent probability distributions
@Pepersteak wrote: How would I use Math.Net to Convolve 2 independent random variables? Assume we have two random variables X and Y such that X∼P(x) and Y∼G(y). We ask, what is the distribution of...
View ArticleMapping a function with multiple parameters
@jdelange wrote: If M is a matrix, then I know I can apply a function on each element using Map(). So to apply Tanh(x) on each element of M, I can do M.Map(Math.Tanh). This works because Tanh(x) takes...
View ArticleIs Math.net (e.b. Fit) thread safe?
@BikeMike wrote: Dear all, I am new to Math.net and wanted to ask, if FIt.Line is thread-safe?If I call this with different input values from >20 threads, s the result jeopardized in any way? Tuple...
View ArticleGauss–Kronrod Quadrature Feature
@larzw wrote: Would a feature that supports generating the Gauss-Kronrod Nodes/Weights be of intrest? It would be based off the...
View ArticleCalculate t-ratio , or r square adjusted value
@Sampath_DR_Doca wrote: I'm usign MathDotNet for Multiple regression. Is there way to get a t-ratio , or r square adjusted value ? Posts: 1 Participants: 1 Read full topic
View Article1x1 Sparse by 1x1 Diagonal matrix -> Exception
@MicroTester wrote: I am getting exception when I try to run the folloeing code: var aSparse = Matrix<double>.Build.Sparse(1, 1, -1.0); var bDiagonal = Matrix<double>.Build.Diagonal(1, 1,...
View ArticleBest way for 3D-curve-Fit
@Patrick_Gerth wrote: Hello together,I'm looking for the most efficient way to make a parabolic fit through a set of 3-dimensional Coordinates. Is this the right place to ask what you guys would do to...
View ArticleClik here to view.
Lanczos Singular Value Decomposition for sparse matrices
@vvdb wrote: Math.NET Numerics has singular value decomposition (SVD), but the current implementation doesn't scale well on large sparse matrices. Also, the implemented algorithm doesn't allow...
View ArticleOctave doesn't read exported matlab matrices
@Lalo wrote: I'm new on this forum. I have a little problem exporting matrices in matlab format, because octave 3.6.4 and octave 4.0.0 reply with this message "error:load:error uncompressing data...
View ArticleVector as accessor into a Matrix
@Colin_Green wrote: I see there's a way of obtaining a Vector from a Matrx row or column, and that this copies the matrix elements. I was wondering if it would be useful to have a Vector subclass that...
View Article