Re: [Scilab-users] question non datafit

2020-04-06 Thread Federico Miyara
Samuel: Oh, this is embarrasing... I did a web search on non-linear fit and somehow the top results always point at an outdated version (5.5.2) of Scilab's documentation. I wonder why Thanks, the new documentation is much better! Regerds, Federico Miyara On 04/04/2020 06:58, Samuel

[Scilab-users] Efficiency map

2020-04-06 Thread Daniel Stringari
Dear friends, I'm still a layman at SCILAB, but I'm using SCILAB this week to be able to plot an efficiency map through a routine I created on it. Basically the efficiency map is summarized in* annex 1_0 and annex 1_1*(I took it from the internet to exemplify the problem), where through a TORQUE

Re: [Scilab-users] ODE : Second order coupled differential equations

2020-04-06 Thread Cruz
I apologize, it worked ! Thank you Stéphane ! -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users

Re: [Scilab-users] ODE : Second order coupled differential equations

2020-04-06 Thread Cruz
Hello Stéphane, thank you. I introduced u0 = [0,0,13,0]'; but it had no effect. Cédric -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html ___ users mailing list users@lists.scilab.org

Re: [Scilab-users] ODE : Second order coupled differential equations

2020-04-06 Thread Stéphane Mottelet
Hello, Try to transpose u0. S. Le 06/04/2020 à 11:41, Cruz a écrit : Hello everybody, I have a system of 2 differential equations (Eq.1 and Eq.2) coupled of order 2 as shown in the attached image. Normally, I can easily find the solution by transforming this system onto a system of order 1

[Scilab-users] ODE : Second order coupled differential equations

2020-04-06 Thread Cruz
Hello everybody, I have a system of 2 differential equations (Eq.1 and Eq.2) coupled of order 2 as shown in the attached image. Normally, I can easily find the solution by transforming this system onto a system of order 1 by changing variables.

Re: [Scilab-users] ?==?utf-8?q? ?==?utf-8?q? ?= Error in parameters determined in non-linear least-squares fittin

2020-04-06 Thread Antoine Monmayrant
Hi all, I would appreciate comments/corrections from you guys as I am far from a specialist in this field! If some of you find this example useful, I can try to work a bit to improve it and push it as an atom module. In fact, I have a bunch of other fit functions (like gaussian, diode-like

Re: [Scilab-users] ?==?utf-8?q? Error in parameters determined in non-linear least-squares fitting

2020-04-06 Thread Claus Futtrup
Hi Scilabers Good examples are worth a lot. Maybe this one could be part of the Scilab documentation? Best regards, Claus On 06.04.2020 08:17, Antoine Monmayrant wrote: Hello Heinz, See below the small example I built and I refer to whenever I need to do some data fitting with confidence

Re: [Scilab-users] ?==?utf-8?q? Error in parameters determined in non-linear least-squares fitting

2020-04-06 Thread Antoine Monmayrant
Hello Heinz, See below the small example I built and I refer to whenever I need to do some data fitting with confidence intervals for the parameters of the model. It is far from perfect but it might help you untangle the Jacobian and covariance matrix thingy. Just two words of caution: (1) I am