Created attachment 110037 [details] screenshot The fit parameter window has 2 buttons to add delete a parameter. They should be removed because they will in all cases lead to a fit failure. If you have e.g. the fit equation exp(b*sin(a*x))+c with 3 parameters and you remove a parameter, the fitting will fail unless you change the fit equation. So the buttons to remove/add a parameter is superfluous and also misleading.
Git commit de9144d010b50b582bc08d601bc62d681c95be58 by Stefan Gerlach. Committed on 28/01/2018 at 08:52. Pushed by sgerlach into branch 'master'. M +10 -5 src/kdefrontend/widgets/FitParametersWidget.cpp https://commits.kde.org/labplot/de9144d010b50b582bc08d601bc62d681c95be58