LevmarExcel

Levmar Excel is a wrapper around Lourakis levmar, one of the best Levenberg-Marquardt algorithms out there. The wrapper allows you to use levmar in Excel via VBA. This is handy if you want to solve a nonlinear least squares problem. The Excel solver is excellent, but it is hard to integrate in VBA code. Levmar Excel fills the gap. It gives you an easy to integrate least squares solver for VBA code. LevmarExcel is released under GPL.

For an introduction on how to get the solver working in Excel / VBA check this post.


Release v1.1 (25jan2015)

New in this version is the ability to pass a VBA class (i.e. object) as extra parameter to LevmarExcel. This object can contain extra information needed to evaluate the error function.

The Levmar Excel Add-in v1.1 is available here LevmarExcel-V_1_1

 

For developers we offer two downloads of the Visual Studio 2010 project, one including all dependencies and one excluding the dependencies that are available via NuGet.  If you have NuGet installed we recommend using the latter "no dependency" download. The source code is available here:


Release v1.0 (23jan2015)

This is the first public release of Levmar Excel. For user of the Add-In there is a zip-archive containing the Add-in (xll-file) and an example to show how the Add-in can be called from Excel.

The Levmar Excel Add-in v1.0 is available here LevmarExcel-V_1_0

 

For developers we offer two downloads of the Visual Studio 2010 project, one including all dependencies and one excluding the dependencies that are available via NuGet.  If you have NuGet installed we recommend using the latter "no dependency" download. The source code is available here: