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Poll: what platforms should Math.NET Numerics support?

@cdrnet wrote: I wonder whether there are any developers out there still requiring .Net 3.5 or Silverlight 5.0 support for future Math.NET Numerics versions (v4 and later), and whether there is any...

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Maximum matrix size

@ducloyer wrote: HelloI'm trying to use MathNet.Numerics.LinearAlgebra to post-treate results of big mechanical calculation model.On small model it's ok, but the last test I've done (more than 15400...

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Curve fit with "polynom" y = a + b.x + c.x^-2 + d.x^2

@kst wrote: Hi, is there a possiblity to do a curve fit with a "polynomial" containing negative exponents (so it is not really a polynomial)? I should get the coefficients base on on a curve with...

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MKL provider on OSX for Mono/Xamarin?

@lionpeloux wrote: Hello, I'm really interested by your .net "numeric" project for my research works in structural analysis. I've been reading your MKL help page but it's still not clear for me if...

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Non-linear regression

@eggord wrote: Hi everybody, i have a question. I want to fit a sigmoid function. Is there a non-linear regression method in math.net or do i have to write my own LM-Algo. ? Thank you! Posts: 3...

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Double-precision Complex data type

@EdmundOwen wrote: Hi, I would like to use Math.Net to do Complex algebra but I can't find the double-precision Complex data type in the library. The documentation throws a 404 error when I try to...

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Are there any code samples about using Mathnet.Numerics?

@River wrote: I am a new comer. And I am looking for some code sample. I found this on NuGer:http://nugetmusthaves.com/Package/MathNet.Numerics.SampleBut when I tried to install it from the Package...

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Generalized eigenvalues

@Pavel wrote: What is the most effective way to solve generalized eigenvalues problem? We looking for v, D for symmetric matrix A, and non-symmetric matrix B, such that A * v = B * v * D Our current...

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Gauss-Legendre Quadrature Feature

@larzw wrote: Hello! Would Integration via Gauss-Legendre Quadrature be an interesting feature to add? It would be similar to the GNU Scientific Library function gsl_integration_glfixed see...

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Linear Regression with regularization (lasso / ridge regression)

@Herger wrote: Hello, I'm new to Math.Net Numerics and was browsing the functionalities in the doc and found the part "Regularization" in the linear regression topic missing. Any plan for adding it...

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Inverted Matrix Values are NaN and Infinity

@atekgul wrote: Hi,I am solving a least squares adjustment problem, and trying to invert a 3x3 matrix, but the result matrix values are getting NaN or Infinity. I have tried to invert this 3x3 matrix...

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Cubic-spline interpolator to fit osculating circles

@DavidRutten wrote: Initially posted this on StackOverflow... but not sure if that was a good idea. How does one go about calculating the proper n-th order coefficients for a Math.NET cubic spline...

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Finding asymptotes in interpolations

@DavidRutten wrote: Sometimes Equidistant-Polynomial and Bulirsch-Stoer interpolation result in discontinuities in the final graph, making it look silly because I just connect all sampled values left...

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Error thrown from Fit.Polynomial

@DRNadler wrote: I tried to fit a simple polynomial: polyFit = MathNet.Numerics.Fit.Polynomial(xSlope, yExpectedPRgap, 3);Input arrays are both double[3] and do work with a line fit as in: Tuple...

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Get submatrix by array of column and row indices

@tsnewer wrote: Hello,How can i choose some rows in a matrix arbitrarily to product a new matrix ? For example, i can do it in matlab like this, A=rand(5,5); index=[1 3 5]; B=A(index,:); . Posts: 3...

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How to create random orthogonal matrix

@jdelange wrote: I am studying the easiest way to create (uniform) random filled orthogonal matrices. I think one way would be a A=QR-decomposition of a random filled matrix A, whereby Q would give me...

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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...

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Wrong 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...

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How 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,...

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Exponential 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?...

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