Christian Woltering

@koryakinp You haven't told us what problem you are actually trying to solve. Since the linear system is ill-conditioned, computing the inverse doesn't make sense. If you are trying to...

@RejectKid numpy is probably using some native LAPACK routine under the hood, which there are several of for [least squares](https://www.smcm.iqfr.csic.es/docs/intel/mkl/mkl_manual/lse/lse_Intro.htm) - so you'd have to find out which routine is...

Yes (GEMV). This is the most general form, so you may decide if you want to use this one or other variants (without scaling factors, without update etc.).

@a5rGithub: the code is now hosted here at GitHub (https://github.com/wo80/CSparse.NET). Also be aware that it is released under LGPL, so it won't be part of Math.NET Numerics. I've written an...

EDIT: removed task list.

You can either remove _Milestone 3_ or add some specific tasks (one addition - with rather low priority - could be to inspect the `TODO`s scattered across the projects). I...

- Having a project to track the progress sounds like a good idea. - You can publish a prerelease/alpha/beta package at any point. The final package should address all tasks...

> I rather to move obsolete classes into another namespace, and remove them in next version, what you think about it? If you think that the obsolete code is still...

I needed the same transformation from GK to ETRS89/UTM, so here's some code to test: https://github.com/wo80/NTv2 Take a look at [CoordinateTransformTest.cs](https://github.com/wo80/NTv2/blob/main/ProjNet.NTv2.Tests/CoordinateTransformTest.cs) to see how a grid file can be used.

@FObermaier not at all. For a more feature complete version the `CoordinateTransformationFactory` [extension methods](https://github.com/wo80/NTv2/blob/main/ProjNet.NTv2/CoordinateTransformationFactoryExtensions.cs#L11) have to be reviewed/extended, since they were just written to work with the German [coordinate systems](https://github.com/wo80/NTv2/blob/main/ProjNet.NTv2.Tests/Beta2007Test.cs#L27)....