matteo.diplomacy's articles:

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fmincon: setting a limit for Line Search steplength 5 42 (1/3/2013 6:45:10 PM) comp.soft-sys.matlab Using fmincon, is it possible setting a limit for Line Search Steplength? After some iterations the steplength is about 1e-5 and the f(x) is constant during the following iterations. It seems the steplength i... Allamarein

fmincon does not respect boundaries 3 16 (12/26/2012 9:27:40 PM) comp.soft-sys.matlab I have a problem with ten variables. I have lower and upper boundaries for each variable. During the optimization process (e.g 2nd iteration), the fmincon uses input variables violating the boundaries. This be... matteo

fgoalattain: 3 GoalsExact to Achieve and 1 function to minimize 6 23 (12/25/2012 5:17:30 PM) comp.soft-sys.matlab I have a function with 4 output. The output from 1 to 3 have to be exactly equal to several values (that I defined in a 'goal' vector). Therefore I called odeset and I imposed: 'GoalsExactAchieve',3 The las... matteo

Executable file does not run on computer without Matlab 0 16 (12/13/2012 8:14:31 PM) comp.soft-sys.matlab I converted my main.m file, which has recourse on several functions These subroutines are provided by some Matlab Toolbox o coded by myself. I used this command to generate the exe file: mcc -m main.m I ... matteo

Odezero: reference? 1 21 (11/22/2012 7:55:31 PM) comp.soft-sys.matlab Where can I find math references about 'odezero', that subroutine used to find the zero crossing by ode solver? ... matteo

Custom Variable Mass 6DoF (Euler Angles) - a clarification 0 34 (4/22/2012 8:24:17 AM) comp.soft-sys.matlab I am going to use the Aerospace Blockset. Please refer to: http://www.mathworks.it/help/toolbox/aeroblks/customvariablemass6dofeulerangles.html This block takes into account a body with variable mass, thus a m... Allamarein

Different results from Debug and Release versiosn in CVF 8 87 (10/13/2011 9:50:20 PM) comp.lang.fortran I use Compaq Visual Fortran (6.6 version I suppose) under Windows XP. I have a code involving MINUIT. Using the version compiled by Debug and Release (using the same input files, of course), I get different res... Allamarein

XLS data red by Fortran 3 136 (9/5/2011 9:36:02 PM) comp.lang.fortran I would run a Fortran code that reads data from a Excel file. For Matlab users, I would 'xlswrite' and 'xlsread' in Fortran. I found something: www.polyhedron.com/qtxls and AUTODICE. I use CVF6. Which package d... Allamarein

Not allowing complex values 4 45 (5/20/2011 4:39:51 PM) comp.soft-sys.matlab I would Matlab does not accept complex variables. Thus I would declar every variable as 'double precision'. If Matlab returns an error or a warning for complex values, this trick would save me by banal errors ... Allamarein

ode45 solver and outputfcn 2 37 (4/25/2011 9:19:24 PM) comp.soft-sys.matlab I often solved my ODEs by the sintax: [T,Y] = ode15s(@vdp1000,[0 3000],[2 0]); and let's say the problem was: function dy = vdp1000(t,y) dy = zeros(2,1); % a column vector dy(1) = y(2); dy(2) = 1000*(1 - ... Allamarein

matteo.diplomacy's replies:

Items(26) /3 Next >> Last >|

Finding a minimum of a function with two variables 17 68 (12/28/2010 11:47:41 AM) comp.lang.fortran I have a function F(x,y). I would find a minimum around two initial guesses x=x0 and y=y0. I have found several methods to find a minimum of a function F(x) (i.e. in a one variable). Where can I find a subrouti... matteo.diplomacy (97)

Create a folder by a command in fortran 13 293 (1/7/2011 11:35:39 AM) comp.lang.fortran I use CVF 6 under Windows XP. I would write a subroutine that creates a new folder. Please see this example program Test implicit none character :: folder, path c path = 'C:\' folder = 'Fortran' call newfolder... matteo.diplomacy (97)

Partial derivative 26 37 (3/3/2011 9:26:57 PM) comp.lang.fortran Let's say I have this function: REAL*8 FUNCTION F(x,y,z) IMPLICIT NONE REAL*8, INTENT(IN) :: x,y,z f = log(x)+y**2+z END FUNCTION I would compute automatically the three partial derivatives of the above funct... matteo.diplomacy (97)

Double integral 7 101 (3/12/2011 9:48:51 AM) comp.lang.fortran I have a function: FUNCTIION DS(x,y) ..... end FUNCTION I need a function to integrate the previous function in an interval [a1,a2] [b1,b2]. Where can I find that? ... matteo.diplomacy (97)

COMMON and IMPLICIT NONE 9 53 (4/5/2011 5:59:40 PM) comp.lang.fortran On the basis that it is an obsolete way to code, but it does not depend on me and I am forced to use a COMMON Block. In fact I use module generally. Anyway, the hereafter code would work? Subroutine Example(a,... matteo.diplomacy (97)

ode45 solver and outputfcn 2 37 (4/25/2011 9:19:24 PM) comp.soft-sys.matlab I often solved my ODEs by the sintax: [T,Y] = ode15s(@vdp1000,[0 3000],[2 0]); and let's say the problem was: function dy = vdp1000(t,y) dy = zeros(2,1); % a column vector dy(1) = y(2); dy(2) = 1000*(1 - ... matteo.diplomacy (97)

Not allowing complex values 4 45 (5/20/2011 4:39:51 PM) comp.soft-sys.matlab I would Matlab does not accept complex variables. Thus I would declar every variable as 'double precision'. If Matlab returns an error or a warning for complex values, this trick would save me by banal errors ... matteo.diplomacy (97)

fgoalattain: 3 GoalsExact to Achieve and 1 function to minimize 6 23 (12/25/2012 5:17:30 PM) comp.soft-sys.matlab I have a function with 4 output. The output from 1 to 3 have to be exactly equal to several values (that I defined in a 'goal' vector). Therefore I called odeset and I imposed: 'GoalsExactAchieve',3 The las... matteo.diplomacy (97)

fmincon does not respect boundaries 3 16 (12/26/2012 9:27:40 PM) comp.soft-sys.matlab I have a problem with ten variables. I have lower and upper boundaries for each variable. During the optimization process (e.g 2nd iteration), the fmincon uses input variables violating the boundaries. This be... matteo.diplomacy (97)

fmincon: setting a limit for Line Search steplength 5 42 (1/3/2013 6:45:10 PM) comp.soft-sys.matlab Using fmincon, is it possible setting a limit for Line Search Steplength? After some iterations the steplength is about 1e-5 and the f(x) is constant during the following iterations. It seems the steplength i... matteo.diplomacy (97)