It is possible to do such fits for nearly any function using the solver, though, but only a few people I’ve met knew how to do this or that it is even possible. However, both lack the possibility to fit sigmoid functions, automatically. Personally, I use Origin/QtiPlot only for plotting and Excel/OO–Calc for evaluation/calculation, because both programs are much more comfortable and powerful. So, people use software such as Origin or QtiPlot to fit.

Nevertheless, it is hard to guess the parameters for a given problem. XLS files can also be opened on Android or iOS.Last week, I posted an article about sigmoid functions and how to use them.

While applications like OpenOffice allow XLS files to be opened, some features may be limited. Users can open XLS files with either Office for Windows or Office for Mac, and both these programs support features, including macros that have been written in Visual Basic. XLS files are widely used in education and in work, although in 2007 they were replaced by the XLSX file format as the primary file type used for Excel spreadsheets. This file format also allows users to create and record macros using a macro-programming language called Visual Basic. XLS files also support charts, images, pivot tables and more, and this means that they are often the format of choice for anyone doing any form of calculation or working with numerical data. XLS files contain one or more worksheets that are made up of cells that are arranged by row and by column, and they allow users to do calculations by inserting formulas into cells. The XLS format, also known as the Excel Binary File Format, is the format for spreadsheet files created by Microsoft or other spreadsheet programs.

Open office excel