[Scilab-users] Some questions about Scilab Optim function

of the parameters estimated by optim, or at least of the stability of the solution found? Thanks in advance and regards, Rafael Guerra -- View this message in context: http://mailinglists.scilab.org/Some-questions-about-Scilab-Optim-function-tp4025722.html Sent from the Scilab users - Mailing Lists Archives

Re: [Scilab-users] using intg in a function

Hi, Invalid syntax for the input variable names in: function [wert] = in(x(1) , x($)). Write instead: function wert = in(x); wert = intg(x(1),x($),quad); endfunction; x = [0:4]; wert = in(x); //should work now Regards Rafael -- View this message in context:

Re: [Scilab-users] Scilab 5.4 createdir

Thanks Adrien and others for the very helpful responses. The mkdir function has indeed all the functionality required, seeming more useful than the more basic createdir function. Best regards, Rafael G. -- View this message in context:

[Scilab-users] Surface smoothing in Scilab, immune to outliers

but for functions of one variable only. Thanks and regards, Rafael Guerra -- View this message in context: http://mailinglists.scilab.org/Surface-smoothing-in-Scilab-immune-to-outliers-tp4026119.html Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com

Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers

linear program. S. Le 04/03/13 13:23, Dang, Christophe a écrit : Hello, De la part de Rafael Guerra Envoyé : lundi 4 mars 2013 04:37 Does somebody know if there are Scilab functions [...] that smooths experimental data z=f(x,y) and is immune to strong outliers. imho, the problem

Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers

-differentiable at the optimum (and only there). However, it seems to work well (true value is [1,1,1]') : L2 case : 1.165072 1.4380897 1.398408 L1 case : 0.9954939 1.0441875 0.9939874 S. Le 04/03/13 18:51, Rafael Guerra a écrit : Thanks Stéphane

Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers

(Smoothed values); plot3d(x, x, zz, 70, 70); e=gce(); e.color_flag = 1; Best regards Calixte On 04/03/2013 04:36, Rafael Guerra wrote: Hello, Does somebody know if there are Scilab functions capable of replacing outliers via some local robust fitting in 2D, i.e., that smooths

Re: [Scilab-users] Regarding simple numerical operations result display.

Hi, The last 'for' loop provided by Stefan is the correct simple way of implementing the basic task requested. Just for fun, the same result can be obtained by using a single boolean math command: -- bool2s(y=a).*(y-b) + b ans = - 11. - 6. - 1.4.100. Rgds Rafael -Original

Re: [Scilab-users] Computing Performance and debugging in Scilab.

Hi, In my Win7 Scilab 5.4 your code outputs the time of execution of the fft command: --printf(%.20f\n,t); 0.14101000 What else do you need to know? Rgds Rafael -Original Message- From: users-boun...@lists.scilab.org [mailto:users-boun...@lists.scilab.org] On Behalf

Re: [Scilab-users] Search for special strings in files, from Scinotes

: Re: [Scilab-users] Search for special strings in files, from Scinotes Hello, De la part de Rafael Guerra Envoyé : mercredi 3 avril 2013 18:41 I am having trouble to search for the culprit special character string 2./ in Scinotes Edit Search Find word in files Did you try

Re: [Scilab-users] Scilab 5.4.1 makes really fast graphs

I am thankful too for these amazing achievements. Best regards Rafael Guerra -Original Message- From: users-boun...@lists.scilab.org [mailto:users-boun...@lists.scilab.org] On Behalf Of Adrien Vogt-Schilb Sent: Thursday, April 04, 2013 10:03 AM To: International users mailing list

Re: [Scilab-users] Reg :: Area Between two curves

Hi Antoine,I have tried in Scilab 5.4 Win7 your 2-year old example script: x=[-10:10];y1=x+10;y2=x.*x; BetweenCurves(x,y1,y2);and got a in-between curve filling result that seams to leak (see attached picture): Scilab5p4_BetweenCurves.gif

Re: [Scilab-users] Reg :: Area Between two curves

Antoine, Thanks for your reply. Your suggestion worked perfectly. Rgds Rafael G. From: amonm...@laas.fr To: users@lists.scilab.org Date: Tue, 21 May 2013 11:26:50 +0200 Subject: Re: [Scilab-users] Reg :: Area Between two curves Le Dimanche 19 Mai 2013 04.49 CEST, Rafael Guerra

[Scilab-users] Scilab dynamic lists and correct use of null()?

assignment.\n at line 13 of function %0_i_st called by : test(1)=null();Thanks and regards,Rafael Guerra -- View this message in context: http://mailinglists.scilab.org/Scilab-dynamic-lists-and-correct-use-of-null-tp4027237.html Sent from the Scilab users - Mailing Lists Archives mailing

Re: [Scilab-users] Scaled plot displays in Scilab?

. Stanislav 09.01.2014 21:14, Rafael Guerra пишет: Hello, Does anyone know if it possible to generate scaled plots in Scilab? Say one wants to plot y=f(x), with x being a distance, at 1:1000 scale (i.e., 1 cm on the PC screen would correspond to 10 m along x-variable). Scroll bar may be needed

Re: [Scilab-users] Scaled plot displays in Scilab?

]; _ De: Rafael Guerra jrafaelbgue...@hotmail.com À: International users mailing list for Scilab. users@lists.scilab.org Envoyé: Jeudi 9 Janvier 2014 16:46:04 Objet: Re: [Scilab-users] Scaled plot displays in Scilab? Hi Stanislav, Thanks but it does not guarantee that the interval [x0,x0+10

[Scilab-users] RE(2): Scaled plot displays in Scilab?

-boun...@lists.scilab.org] On Behalf Of Samuel Gougeon Sent: Friday, January 10, 2014 1:25 PM To: International users mailing list for Scilab. Subject: Re: [Scilab-users] Scaled plot displays in Scilab? Le 09/01/2014 22:54, Rafael Guerra a écrit : .../... It would be very useful to be able

Re: [Scilab-users] Scilab dynamic lists and correct use of null()?

Samuel, Thanks for your message. There is something a bit confusing in all this... If one runs the Scilab code below an error occurs: test(1).parm1 = [ 1 2 3 4]; test(1).parm2 = ones(3,3); test(2) = test(1); test(2).parm3 = hello; test(2)=[]; // OK test(1)=[]; // Not OK !--error 1 A

Re: [Scilab-users] Re : finding roots

Hi Paul, Please try the solution below using fsolve. Could you let us know why do you want to solve that equation? Is it just for fun or is there an underlying physical problem? PS: I was looking for a new version of Scilab and found a donate button, Scilab needs our help. Regards Rafael

Re: [Scilab-users] [ANN]: Scipad-8.72

of closing the file instead of selecting it. Thanks and regards Rafael Guerra -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Francois Vogel Sent: Wednesday, March 26, 2014 9:34 PM To: Scilab users list Subject: [Scilab-users] [ANN]: Scipad-8.72 ANNOUNCE

[Scilab-users] RE(2): finding roots

- Mail d'origine - De: Rafael Guerra jrafaelbgue...@hotmail.com À: 'International users mailing list for Scilab.' users@lists.scilab.org Envoyé: Sun, 30 Mar 2014 14:01:19 +0200 (CEST) Objet: Re: [Scilab-users] Re : finding roots Hi Paul, Please try the solution below using fsolve. Could you let

[Scilab-users] Binary I/O of Integers on Scilab 5.5.0 Windows 64 bits

Hello, Is the following change of mput/mget data types ib and lb have been reported for Scilab 5.5.0 (Win 64 bits)? fid = mopen(mput_lb.dat, 'wb', 0); mput(16,'lb',fid); mclose(fid) // outputs now long long integer with 8 bytes fid = mopen(mput_ib.dat, 'wb', 0); mput(16,'ib',fid);

Re: [Scilab-users] Binary I/O of Integers on Scilab 5.5.0 Windows 64 bits

] On Behalf Of Rafael Guerra Sent: Sunday, May 04, 2014 12:38 PM To: 'International users mailing list for Scilab.' Subject: [Scilab-users] Binary I/O of Integers on Scilab 5.5.0 Windows 64 bits Hello, Is the following change of mput/mget data types ib and lb have been reported for Scilab

Re: [Scilab-users] Displaying large amount of text outside the Scilab console

') mfprintf(fd, yourstring) mfprintf(fd,\n); mclose(fd); if (isdef('editor') | (funptr('editor')0)) then editor(filename1) end /Claus On 12-May-14 19:30, Rafael Guerra wrote: Hello, Does anyone know how to properly display a large amount of plain text stored in a string variable of size (N,1), i.e

[Scilab-users] Question about uigetfile function

Hello, Does anyone know how if it is possible to propose a File name inside the GUI of uigetfile? For example: filename= uigetfile([*.txt],, Write output file name, %f); It would be handy to be able to propose a file name in uigetfile, based on a Scilab variable related to data to be

Re: [Scilab-users] Scilab colorbar titles?

And a second question: -How to make the colorbar numbers more legible? In the example below the minus sign overlays (in my PC) the colorbar tick marks and cannot be read Thanks and regards Rafael G. From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra

Re: [Scilab-users] Scilab colorbar titles?

, Le 23/06/2014 16:59, Rafael Guerra a écrit : Hello, Does anybody know how to write titles above colorbars (say: “series1”,”series2”) as in example below: clf;X=1:10;Y=1:20;surf(X,Y,-X.*.Y'); colorbar(-20,-1); e = gce(); e.parent.title.text = Series 1; X = 21:30; surf(X,Y,X.*.Y'); colorbar

[Scilab-users] RE(2): Scilab 5.5 filled curve plotting issue?

filled curve plotting issue? Hello Rafael, Le 19/08/2014 21:17, Rafael Guerra a écrit : Hi Samuel, Thanks for pointing to the bug tracker. I have read the explanations but could not find a workaround. I hope what I say is mathematically correct: The two data series provided in my example

[Scilab-users] Computing with very large numbers in Scilab

Dear Scilab'ers, Happy New Year. Does someone know to perform in Scilab computations involving very large numbers? For example, the how to compute the following probability formula: 1-365!/((365-23)! *365^23) 1-factorial(365)/(factorial(365-23)* 365^23) produces Nan in Scilab The correct

Re: [Scilab-users] Display problem

Hi Wolfgang, Using Win7 64bit laptop and ran your code Ok for max=9e6 and plotted series fine but not for 10e6 (Scilab crashed and exited). Regards, Rafael From: w.sch...@ove.at To: antoine.monmayr...@laas.fr; users@lists.scilab.org Date: Wed, 22 Apr 2015 06:50:30 + Subject: Re:

Re: [Scilab-users] Display problem

Hi Tim, There are situations where one may want to arbitrarily zoom a plot interactively. This leads me to a past email thread Scaled plot displays in Scilab? where there was a possible Java heap limitation. This has important industrial applications. I copy below acode sample from that

Re: [Scilab-users] Scilab slowing down computer heavilly

equipped with an hybrid graphic card (ie integrated small one for the main screen and a discrete one for the external screens)? Could you give us the exact model to see whether one of us can reproduce the issue? Cheers, Antoine Le Mercredi 20 Mai 2015 17:16 CEST, Rafael Guerra [hidden

[Scilab-users] Scilab slowing down computer heavilly

Hello Scilab'ers, When I ran Scilab in the following configuration my laptop slows down extremely: - Win 7, 32 GB RAM laptop, intel 3.2 GHz processor, Dell laptop and docking station, 2 extra-large screens Need to restart computer to get performance back. Without using the docking station there

Re: [Scilab-users] Scilab slowing down computer heavilly

one for the external screens)? Could you give us the exact model to see whether one of us can reproduce the issue? Cheers, Antoine Le Mercredi 20 Mai 2015 17:16 CEST, Rafael Guerra [hidden email] a écrit: Hello Scilab'ers, When I ran Scilab in the following configuration my

Re: [Scilab-users] Hypermatrix manipulation

Hello, Here below a more inefficient solution but that might fit your needs: // Hypermatrix definition M(x,y,z,k) x=[1 1.5 2]; y=[0 1 %e %pi]; z=[2 3].^0.5; k=1:5; nx=length(x); ny=length(y); nz=length(z); nk=length(k); M=rand(nx,ny,nz,nk); // Write coordinates and M to disk: fid =

Re: [Scilab-users] Scilab slowing down computer heavilly

A late reply but in case it helps someone: the definitive fix to my Dell docking station issues with very slow PC performance with Scilab running, came after recent update at Dell site of the graphical drivers Best regards, Rafael -- View this message in context:

Re: [Scilab-users] How to produce a filled staircase plot

Very ingenious matrix trick, I loved it Date: Wed, 7 Oct 2015 11:47:49 +0200 From: serge.st...@inria.fr To: users@lists.scilab.org Subject: Re: [Scilab-users] How to produce a filled staircase plot Under Scilab-5.5.2 xfpoly rescale the graph automatically as plot does

Re: [Scilab-users] Function

I can only think of Da Vinci's wise words: "simplicity is the ultimate sophistication" > To: users@lists.scilab.org > From: cfutt...@gmail.com > Date: Wed, 30 Sep 2015 23:51:11 +0200 > Subject: Re: [Scilab-users] Function > > Hi Christophe, et al. > > Sarcasm can create an unpleasant

Re: [Scilab-users] integrals

What about Mathematica? Or just the free Wolfram Alpha? -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Tim Wescott Sent: Monday, December 07, 2015 8:01 PM To: Pablo Fonovich Cc: Users mailing list for Scilab

Re: [Scilab-users] Plotting properties of digital audio filters

Hi Frederik, The unwrapping shown does not look good, it seems that you need to play further with the unwrap input parameters. Check if Scilab's function gives same results as this one: http://mailinglists.scilab.org/unwrap-improvements-td4026370.html You can compare the results with those

Re: [Scilab-users] Plotting properties of digital audio filters

Hi, Assuming sr=5e-5 s, Scilab 5.5.2 gave me the following phase plot: Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of fred_audio_dsp Sent: Sunday, December 13, 2015 6:22 PM To: users@lists.scilab.org Subject: Re:

Re: [Scilab-users] Title positioning on log-scale plots

g> Subject: Re: [Scilab-users] Title positioning on log-scale plots Le 11/25/2015 12:45 PM, Rafael Guerra a écrit : Dear Scilaber’s, Does anybody know how to [x,y]-position titles on log-scale plots? See examples below which plot ok only if the x-scale is linear: clf; x=1:100; y=x.^0.2; s

Re: [Scilab-users] Hypermatrix manipulation

Hi Petar, If you only need to write the hypermatrix M to disk you could do: M=rand(100,3,3,3); // example [nx,ny,nz,nk]= size(M); fid = mopen("hyper_out.txt",'w'); mfprintf(fid,"%i %i %i %i\n",nx,ny,nz,nk); for i=1: length(M) mfprintf(fid,"%15.5f\n",M(i)); end; mclose(fid) You need

Re: [Scilab-users] Hypermatrix manipulation

Hi Petar, You just need to add the comma inside the printf format string: M=rand(100,3,3,3); // example [nx,ny,nz,nk]= size(M); // To write: fid = mopen("hyper_out.txt",'w'); mfprintf(fid,"%i %i %i %i\n",nx,ny,nz,nk); mfprintf(fid,"%15.5f,\n",M(:)); mclose(fid) For more details on printf

Re: [Scilab-users] Scinotes special keywords

Hi Calixte, The Scinotes Latex display is awesome and really very useful. Do you know how to insert the $$ $$ in order to display the multiple lines Latex comments below (from fmincon code by M.Baudin): // //\begin{eqnarray} //\mbox{min}_{x}& f(x) \\ //\mbox{subject to} & c(x)

Re: [Scilab-users] uman : help in the console, with language switch, automatic redirections, related online pages.

Hello Samuel, Thanks for sharing uman and congratulations for the amazing work done. This is a very useful tool to increase Scilab users productivity. The quick access to the appropriate bug webpages is awesome. May we also use uman to query the relevant threads in Scilab users webpages?

Re: [Scilab-users] Hypermatrix and user defined function

Hi, Defining the left-hand side of your function has follows should help: function [x, y]=mapToCylinder(a,M,r) . endfunction Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of petarf Sent: Friday, November 20, 2015 4:03 PM To:

Re: [Scilab-users] Vectorization issue

Hi Paul, It seems that there may be some issues with the .*, .^ syntax and also the use of the same variable in different context (b). Editing the vectorization part of your code as follows: // using vectorization aa = [0:n]'; bb = ones(n,1); i = aa.*.bb; j = bb.*.aa; Km2 =

Re: [Scilab-users] Wrong number of arguments? exclusive)

For sake of accuracy in detriment of bandwidth: setting equal weights in Bartlett3p should produce a 3-point moving average (mean) filter, not a median filter From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Claus Futtrup Sent: Tuesday, April 05, 2016 7:25 PM To:

Re: [Scilab-users] Wrong number of arguments? exclusive) to exclusive)

Hi Buk. I think that for your data, the Loess (or Lowess) technique provided superior results. Why does it not suit you? Note that the parameters used in my plots were smoothing=0.03 (not 0.3) and order=2 or 3 but I would recommend using order=1 or 2 instead. PS: regarding the 3-point median

Re: [Scilab-users] "Smoothing" very localised discontinuities in curves.

Hi Buk. Have you tried Scilab's cubic splines using the "monotone" option? Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of scilab.20.browse...@xoxy.net Sent: Sunday, April 03, 2016 9:09 PM To: users@lists.scilab.org Subject:

Re: [Scilab-users] "Smoothing" very localised discontinuities in (scilab: to exclusive) curves.

If your data is not recorded in real-time, you can sort it (along the x-axis) and this does not imply that the "y(x) function" will become monotonous. See below. As suggested, by Stephane Mottelet, see one 3-point median filter solution below applied to data similar to yours: M = [1.0 -0.2;

Re: [Scilab-users] Wrong number of arguments?

Fyi, that code does not produce errors in my Scilab 5.5.2 64-bit running on Win 7 -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of scilab.20.browse...@xoxy.net Sent: Tuesday, April 05, 2016 3:10 AM To: users@lists.scilab.org Subject: [Scilab-users] Wrong

Re: [Scilab-users] "Smoothing" very localised discontinuities in (scilab: to exclusive) (scilab: to exclusive) (scilab: to exclusive) (scilab: to exclusive) (scilab: to exclusive) curves.

Buk. Testing CWA toolbox's Loess code on your data seems to produce far superior results than the very simple 3-point median filter - see attached (sorry for the misspelling) Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of

Re: [Scilab-users] "Smoothing" very localised discontinuities in (scilab: to exclusive) (scilab: to exclusive) curves.

Buk. Could you please provide the data points in your example so that we can test different methods. Note that in the moving median filter solution presented there is no propagation of errors because the original dataset is always used and only one filtering pass is made using a very short

Re: [Scilab-users] "Smoothing" very localised discontinuities in (scilab: to exclusive) (scilab: to exclusive) (scilab: to exclusive) (scilab: to exclusive) curves.

Burk. I am sending results as Plain Text with attachments. PS: the former pictures were embedded in a HTML-email which I could read fine. Rgds Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of scilab.20.browse...@xoxy.net Sent: Monday, April 04,

Re: [Scilab-users] Circular contour plot

Hello, Is the following example ok? t=-%pi:0.02:%pi; M=sin(t)'*cos(t); n=length(t); r=2; //radius for i=1:n for j=1:n if sqrt(t(i)^2+t(j)^2)>r then M(i,j)=%nan; end end end clf(); Sgrayplot(t,t,M); Otherwise, could you provide a sample of your pb script. Regards, Rafael

Re: [Scilab-users] users mailing lists out of english and french-speaking ones

+1 :) -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Tim Wescott Sent: Tuesday, April 26, 2016 12:45 AM To: Users mailing list for Scilab Subject: Re: [Scilab-users] users mailing lists out of english and french-speaking ones

Re: [Scilab-users] uman 2.0 is released <= Re: uman : help in the console, with language switch, automatic redirections, related online pages.

Hi Samuel, Thanks for sharing the new uman version but could please advise about its installation on Scilab 5.5.2. Uman's "readme.txt" recommends using ATOMS but then, only the older 1.3 uman version seems to be available and to get installed. Kind regards, Rafael From: users

Re: [Scilab-users] uman 2.0 is released <= Re: uman : help in the console, with language switch, automatic redirections, related online pages.

automatic redirections, related online pages. Hi Rafael, Le 14/04/2016 23:31, Rafael Guerra a écrit : Hi Samuel, Thanks for sharing the new uman version but could please advise about its installation on Scilab 5.5.2. Uman’s “readme.txt” recommends using ATOMS but then, only the older

Re: [Scilab-users] plot2d question

Sorry Rafael It did not work. Thanks anyway From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: Sunday, July 03, 2016 9:24 PM To: 'Users mailing list for Scilab' Subject: Re: [Scilab-users] plot2d question Offer, Would this be ok: x=(1:10)'; y=log(x); plo

Re: [Scilab-users] case control statement

select for anything) /Claus On 22-01-2017 19:18, Rafael Guerra wrote: Schlumberger-Private Hi Claus, Check this code out: // START OF (UGLY) CASE loop= %t; while loop printf("\n") str = input("Enter number (1-7) or 0 to exit: n=","string"); n = evst

Re: [Scilab-users] case control statement

Apologies for previous Outlook emails with company info classification - will remove this in the future. From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: Sunday, January 22, 2017 7:38 PM To: Users mailing list for Scilab <users@lists.scilab.org> Subje

Re: [Scilab-users] GUI save and import data

Hi, Not related with your error message but the code line: for i=1:size(par) does not sound good. Try replacing by: for i=1:length(par) Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of petarf Sent: Monday, September 12, 2016

Re: [Scilab-users] GUI save and import data

Hi, Without seeing the details of your code and with no experience with findobj, from what I could understand from the help file, the command lines like: Q=findobj("tag","Q"); do not sound good. As findobj outputs an handle to your uicontrol object, you could try: hdl =

Re: [Scilab-users] GUI save and import data

I am sorry, please discard my previous comment... after further reading of the help doc, it does not make sense. From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: Tuesday, September 13, 2016 4:14 PM To: Users mailing list for Scilab <users@lists.scilab.

Re: [Scilab-users] Scilab vs matlab

Hello, Off course the price. Fyi, Eike Rietsch, an advanced Matlab user, wrote in 2010 a quite comprehensive “Introduction to Scilab from a Matlab User's Point of View”. He had several positive comments about Scilab including, quote: · … the power that typed lists and matrix-oriented

Re: [Scilab-users] Scilab 6 notes on upgrading Scilab 5 code

something like a wiki page describing the modifications "from a user point of view". Maybe an advanced user or contributor already started something. Do you have some ideas about the expected content ? Thanks, -- Clement On Sep 28, 2016 16:20, Rafael Guerra <jrafaelbgue...@hotmail

Re: [Scilab-users] determination of peaks and valley on a noisy signal

Hi Paul, Thanks for sharing the interesting code & link. Please note that for noisy data you may still be able to use your peaks-and-valleys code by filtering the input data beforehand. Depending on the type of noise, Scilab offers different solutions: - Low-Pass filters: if the noise is

Re: [Scilab-users] Forum dedicated to Scilab developments

Hello all, Just to add 2 cents. The ML is a place to learn about Scilab in a faster and more pleasant way. And for this purpose, I specially enjoy the questions and answers that include data, Scilab code and/or some illustrations. Many questions posed mix Scilab knowledge with some more

Re: [Scilab-users] Forum dedicated to Scilab developments

(correction to PS: in previous email) What looked like a Mobius strip finally isn’t one. For the record, here below the correct equation: p1=linspace(-1,1,50); p2=linspace(0,2*%pi,50); deff("[x,y,z]=f(p1,p2)",["x=(R+r*p1.*cos(p2/2)).*cos(p2)";..

Re: [Scilab-users] fourier series and fft

Hi Paul, Fyi, Tom Co's simple tutorial: http://www.chem.mtu.edu/~tbco/cm416/fft1.pdf shows how to obtain the Fourier coefficients via the fft Regards, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of paul.carr...@free.fr Sent: Friday,

Re: [Scilab-users] How to print int64 or uint64 integers at full accuracy?

Hello, I have tried Tim's nice kludge but with no success. A different attempt using "modulo" failed too: i = int64(2)^62 + 1; s = ""; j = i; b = int64(10); while (j >= 1) dj = int(modulo(j,b)); s = s + string(dj); j = j/b; end s = strrev(s); printf("64-bit integer - string: %s\n",

Re: [Scilab-users] hypot

Hi, If I am not mistaken, that seems to be what Scilab vector “norm“ does. Regards, Rafael From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Claus Futtrup Sent: Monday, August 29, 2016 6:40 PM To: International users mailing list for Scilab. Subject:

Re: [Scilab-users] Scilab 6 notes on upgrading Scilab 5 code

Hi Samuel, Thanks for the very useful link, which provided key information that does seem to be (totally) in: https://help.scilab.org/docs/6.0.0/en_US/CHANGES.html Maybe the latter document could be updated with (a summary) of the former. Regards, Rafael -Original Message- From: users

Re: [Scilab-users] Scilab 6 notes on upgrading Scilab 5 code

(sorry - correction) Hi Samuel, Thanks for the very useful link, which provides key information that does not seem to be (totally) in: https://help.scilab.org/docs/6.0.0/en_US/CHANGES.html Maybe the latter document could be updated with (a summary) of the former. Regards, Rafael

[Scilab-users] Scilab 6 notes on upgrading Scilab 5 code

Dear Scilab'ers, Is there a comprehensive list of the key changes in Scilab 6 that one must bear in mind when trying to upgrade existing Scilab 5 code? Thanks and regards, Rafael ___ users mailing list users@lists.scilab.org

Re: [Scilab-users] horner test

(note: votre message n'a pas été publié) Bonsoir, Essayez le code suivant svp: // START OF CODE clear; clf; M = [ 0.003 17 0.0028 208980 0.0026 261261 0.0024 336000 0.0022 439530 0.002 57 0.0018 785568 0.0016 1110375 0.0014 1667952 0.0012

Re: [Scilab-users] grayplot

016 18:50, Rafael Guerra a écrit : Hi Samuel, Scilab-6 'scatter' plot function seems indeed quite adequate for these data. Would it be possible to produce such scatter plots with dots color coded (as attached) in Scilab 5? . yes it is, for instance using xfarcs() as below. Regards n

Re: [Scilab-users] grayplot

ct: Re: [Scilab-users] grayplot Le 28/10/2016 14:12, Rafael Guerra a écrit : > Hi Samuel, > > Fyi, on my Scilab 5.5.2 (64-bit) Win 7 configuration, the code here below > still fails for one xfarcs() call. > Uncommenting the second xfarcs() call does fix the plot (attached). > It lo

Re: [Scilab-users] grayplot

// END OF CODE Rgds, Rafael -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Samuel Gougeon Sent: Friday, October 28, 2016 1:35 AM To: Users mailing list for Scilab <users@lists.scilab.org> Subject: Re: [Scilab-users] grayplot Le 27/10/2016 21:5

Re: [Scilab-users] varargout doubt

Please check the two examples here below: / START OF CODE clear; x=[1 2 3;4 5 6]; y=[4 5 6;7 8 9]; z=10; M=list(x,y,z); function out_list=func1(M) //ex.1 n = length(M); // decide the number of variables to output based on function input out_list = list(1:n); for i=1:n

Re: [Scilab-users] The sound of mathematical formulas

ypical sounds (bass guitar, bells, ...) S. Le 05/11/2016 à 13:43, Rafael Guerra a écrit : Dear Scilab'ers, Are you aware of any good references showing how to produce brief, nice and useful sounds using simple mathematical formulas? This is primarily out of curiosity but they could well be played

Re: [Scilab-users] varargout doubt

Hello Shamika, I order to output a variable number of arguments from a function, one solution is to do define your output as a list as follows: function varargout_list = callOct(fname,varargin) … varargout_list = list(1:n); // n= number of output variables for i=1:n

Re: [Scilab-users] ignore function output variable

Hi, Concerning 'unique', without rewriting it from scratch to output only what you want when you want it, a quick & dirty workaround would be to wrap it in your own 'my_unique' function as follows: // START OF EXAMPLE function varargout = my_unique(a,varargin) [lhs,rhs] = argn(); n =

[Scilab-users] The sound of mathematical formulas

Dear Scilab'ers, Are you aware of any good references showing how to produce brief, nice and useful sounds using simple mathematical formulas? This is primarily out of curiosity but they could well be played using sound() or playsnd() functions, and provide different sound warnings during

Re: [Scilab-users] using csvRead

Hello Philipp, Say that after mopen you got all your text input into array of strings ‘txt’: txt = [ "HEADER-Line", "01.12.2015, 01:15:00.12, 1.1, -2.2"; "03.12.2015, 11:15:00.12, -11.1, 2.5"; "12.12.2015, 21:15:00.12, 5.1, 6.2"]; Then do the following: tx=txt(2:$); // get rid of

Re: [Scilab-users] using csvRead

Correction: after having obtained ‘tx’ as below, just do:M=evstr(tx); From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: Friday, October 14, 2016 12:53 PM To: Users mailing list for Scilab <users@lists.scilab.org> Subject: Re: [Scilab-users] using c

Re: [Scilab-users] using csvRead

NOTE: fyi, after testing over very large text files, it happens that doing mputl of ‘tx’ to disk followed by M=fscanfMat is much faster than doing simply M=evstr(tx) … From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Rafael Guerra Sent: Friday, October 14, 2016 12:58 PM

Re: [Scilab-users] Converting string months to month numbers

Hi Scilaber's, Fyi, another approach using execstr + evstr functions: // use month names in M to create 12 variables that are assigned to some 12 numbers -->execstr(M + '=' + string(1:size(M,2))); -->evstr(Ms) ans = 12.4. 2. 12. 6. 7. This different approach

Re: [Scilab-users] using csvRead vs mfscanf and fscanfMat

Hi, The problem is not with csvRead, but with the need in the example we are considering here to use the evstr function afterwards on large string data to convert it to useable numeric values. See time breakdown here below for another 50,000 line input data test: time1= 0.6552// mfscanf

Re: [Scilab-users] Axis break with Scilab ?

Hello, There was a silly mistake in the labeling in the previous code sample posted. In order to try keeping a clean record, here it goes an improved version of plotxbreaks(), which produces the plot attached. // Multiple axis breaks in Scilab (3rd attempt) // START OF CODE clear; function

Re: [Scilab-users] Axis break with Scilab ?

Dear Scilabers, Sorry to post yet another version but known errors should not remain uncorrected. The revised snippet below produces the attached figure. // Multiple x-axis breaks in Scilab (4th attempt) // START OF CODE clear; function []=plotxbreaks(x0,y0,dx_break); // x0 and y0 are 1D

Re: [Scilab-users] Axis break with Scilab ?

Hi Antoine, Please find here below improved code to plot with breaks, using a function "plotbreaks": // Multiple axis breaks in Scilab (2nd attempt) // START OF CODE clear; function []=plotbreaks(x0,y0,dx_break); // x0 and y0 are 1D arrays to plot with breaks [x0,k] = gsort(x0,'g','i');

Re: [Scilab-users] Axis break with Scilab ?

Hi Antoine, Thanks for sharing this interesting topic. Please check a quick brute force solution below, that needs further polishing. In particular, the grid display should be improved. // Multiple axis breaks in Scilab (1st brute force attempt) // START OF CODE clf(); clear; x0=[1:10 20:25

Re: [Scilab-users] Start an arrested loop with one keystroke only

Hi Jens, I like the idea of using a function but could not find out right way how to simplify and generalize yours for arbitrary loops. If instead of using a function, we copy the following line into "any" for or while loop we will get the same result as in your particular example: // START

Re: [Scilab-users] grayplot - colorbar

Hello Wolfgang, The same message as Antoine, but in other words: According to the help file, in Matplot1(M,rect), the values of int(M) are used as entries in the current colormap. If the colormap indices run from 1 to Nc and M has values from z1 to z2, then in order to use the full color scale

Re: [Scilab-users] xtitle seems to suppress plot

Works alright every time on Scilab 5.5.2 64-bit Win7 but plot background is grey -Original Message- From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Tim Wescott Sent: Monday, November 28, 2016 12:19 AM To: Jens Simon Strom Cc: Users mailing list for

Re: [Scilab-users] ?==?utf-8?q? Axis break with Scilab ?

Hi Antoine, Note that with minor polishing of the previous code one can also display vertical grid lines and shaded gaps, as per attachment. Would this be more to your taste? PS: Using similar logic, one could add an extra input parameter to plotbreaks() in order to shade the larger vertical

Re: [Scilab-users] uman 2.1 is released

Given its usefulness, shouldn't it be part of the main Scilab distribution, not an add-on? and thanks too. From: users [mailto:users-boun...@lists.scilab.org] On Behalf Of Antoine Monmayrant Sent: Wednesday, November 16, 2016 1:50 PM To: Users mailing list for Scilab

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