How to perform nonlinear regression accross multiple datasets

How do I correctly find parameters using the fittype function without it just using my initial guesses?

How do I redraw a picture given to me using its data points that I've found using the curve fitting app?

How to curve fitting for array?

How to use RBF neural network to solve the following problems?

Proper phrasing of error bars in an essay

Fitting a blackbody curve with two variables - having issues with lsqcurvefit stopping and unsure how to use options effectively

Logarithmic and exponential curve fitting

Splitting two nearly overlapping curves

Solving a large set of loosely related systems of linear equations (Curve fitting)

Constraints to a Second Order Curve Fit

Fitting exponential using derivatives

Fitting Gaussian to a curve with multiple peaks

Nonlinear Curve fitting with integrals

Find X intercept with error estimates

Overfitting of computational model in experimental data

Curve fitting in a for loop?

lsqcurvefit Surface Fitting Troubleshooting

Solving nonlinear equations using Matlab

how to make the simulation of canopy by fitting with ellipsoid and cone?

Ezyfit: Single vs. Two-Step Fitting Problem

How can we run for loop in order to get several fitting parameters?

Curve Fitting Young's Modulus for Stress Strain Curve

Hello, i keep getting an error, 'fit' requires one of the following: Curve Fitting Toolbox Predictive Maintenance Toolbox, how would i solve this error.

Create similar curves through specific data points