Re: [Scilab-users] Scilab 5.5.0 beta1 does not start under OSX 10.8
Same behaviour : macmottelet-gi-0:Applications mottelet$ scilab-master-1380893237.app/Contents/MacOS/bin/scilab dyld: Library not loaded: @executable_path/../lib/thirdparty/10.6/libiconv.2.dylib Referenced from: /Applications/scilab-master-1380893237.app/Contents/MacOS/lib/thirdparty/libxml2.2.dylib Reason: Incompatible library version: libxml2.2.dylib requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 scilab-master-1380893237.app/Contents/MacOS/bin/scilab: line 730: 14253 Trace/BPT trap: 5 /usr/libexec/java_home --request /dev/null dyld: Library not loaded: /sw/lib/libiconv.2.dylib Referenced from: /Applications/scilab-master-1380893237.app/Contents/MacOS/bin/scilab-bin Reason: Incompatible library version: scilab-bin requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 scilab-master-1380893237.app/Contents/MacOS/bin/scilab: line 911: 14256 Trace/BPT trap: 5 $SCILABBIN $@ S. Le 04/10/13 17:46, Bruno JOFRET a écrit : Hi, Can you try this nightly [1] please ? [1] http://downloadarea.scilab.org/download/2013-10-04/scilab-master-1380893237-x86_64.dmg On 10/02/2013 06:07 PM, Stéphane Mottelet wrote: Hello all, The 5.5 beta seems to be broken : # open /Applications/scilab-5.5.0-beta-1.app/ LSOpenURLsWithRole() failed with error -10810 for the file /Applications/scilab-5.5.0-beta-1.app. Trying to lauch the binary gives : # /Applications/scilab-5.5.0-beta-1.app/Contents/MacOS/bin/scilab dyld: Library not loaded: /sw/lib/libiconv.2.dylib Referenced from: /Applications/scilab-5.5.0-beta-1.app/Contents/MacOS/lib/thirdparty/libxml2.2.dylib Reason: Incompatible library version: libxml2.2.dylib requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 /Applications/scilab-5.5.0-beta-1.app/Contents/MacOS/bin/scilab: line 730: 11666 Trace/BPT trap: 5 /usr/libexec/java_home --request /dev/null dyld: Library not loaded: /sw/lib/libiconv.2.dylib Referenced from: /Applications/scilab-5.5.0-beta-1.app/Contents/MacOS/lib/thirdparty/libxml2.2.dylib Reason: Incompatible library version: libxml2.2.dylib requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 /Applications/scilab-5.5.0-beta-1.app/Contents/MacOS/bin/scilab: line 911: 11669 Trace/BPT trap: 5 $SCILABBIN $@ S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] [Users-fr] plot avec scilab 5.4.1 ss ubuntu 13.04
Le 16 sept. 2013 à 20:50, Antoine Monmayrant antoine.monmayr...@laas.fr a écrit : Le 16/09/13 17:57, Calixte a écrit : On 16/09/2013 15:18, Antoine Monmayrant wrote: On 09/16/2013 02:05 PM, quantpa...@numericable.fr wrote: j'ai executé x=[0:0.1:2*%pi];plot(x,sin(x)); sur 5.4.1 cela se graphe sans problem pour moi sur ubuntu 13.04 installé avec scilab-5.4.1.bin.linux-x86-64.tar.gz pascal Message d'origine De : Stéphane Parisstephane.pa...@univ-lorraine.fr À :users...@lists.scilab.org Objet : [Users-fr] plot avec scilab 5.4.1 ss ubuntu 13.04 Date : 16/09/2013 12:29:49 CEST Bonjour, J'ai installé ubuntu 13.04 et depuis les graphiques sont blancs ? Peut-on remédier à ce pb ? Hmm, comme souvent, il s'agit surement d'un soucis de pilote graphique. Est-ce que l'opengl marche correctement depuis le passage à la 13.04? (pour vérifier: glxgears) J'ai eu quelques surprises de ce côté là en passant de 10.04 à 12.04LTS. Bonjour, Pr information, quand la carte graphique est une nvidia il vaut mieux utiliser le driver proprietaire plutot que le driver nouveau... Oui, et quand la carte est une ati, il vaut mieux aller l'enterrer dans le jardin ou bien trouver un gentil ordi sous Windows avec une carte Nvidia pour faire un échange standard... Tout a fait, c'est ce que j'ai fait sur mon MacPro ! S. SAntoine Calixte Antoine Par avance merci de votre aide, Stéfane ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] how to get list of object that are present in scilab script file
Le 03/09/13 17:27, Serge Steer a écrit :
Le 03/09/2013 12:20, hilife5 a écrit :
I want to know is there exist any way to get the list of objects like
variable names, matrices, plots that are present in scilab script file.
for script file, no but it is possible for functions using the
macrovar function
Serge Steer
Thanks
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All the variables created by foo.sce at the workspace level can be
obtained like this :
clear
names=who('local');
exec('foo.sce',-1);
names=setdiff(names,who('local'));
This trick is a basis for a more clever method (e.g. by using typeof a
posteriori).
S.
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Re: [Scilab-users] how to get list of object that are present in scilab script file
Le 03/09/13 17:27, Serge Steer a écrit :
Le 03/09/2013 12:20, hilife5 a écrit :
I want to know is there exist any way to get the list of objects like
variable names, matrices, plots that are present in scilab script file.
for script file, no but it is possible for functions using the
macrovar function
Serge Steer
Thanks
--
View this message in context:
http://mailinglists.scilab.org/how-to-get-list-of-object-that-are-present-in-scilab-script-file-tp4027336.html
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archive at Nabble.com.
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Maybe a brute force method could work : all the variables created by a
script 'foo.sce' at the workspace level can be obtained like this :
clear
names=who('local');
exec('foo.sce',-1);
names=setdiff(who('local'),'names');
This trick is a basis for a more clever method (e.g. by using typeof a
posteriori).
You could also on the fly encapsulate the script in a function and use
macrovar.
S.
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Re: [Scilab-users] 4D gridding and interpolation of scattered data points
Hello, try splin3d or linear_interpn. S. Le 03/06/13 16:21, Ariel a écrit : Do you mean that he V values you have are not placed on a 3d grid, but on randomly scattered (x, y, z) points? Exactly.I have randomly scattered (x,y,z) points with corresponding value V and I want to map those points onto a regular grid with the interpolated (or averaged) value V. Kind regards Ariël de Graaf == DISCLAIMER === NOTE: The information transmitted in this email is for the person or entity to which it is addressed: it may contain information that is confidential and/or legally privileged. If you are not the intended recipient, please do not read, use, retransmit or disseminate this information. Although this email and any attachments are believed to be free of any virus, it is the responsibility of the recipient to ensure that they are virus free. No responsibility is accepted by the KROHNE Company for any loss or damage arising from receipt of this message. Furthermore, unless explicitly stated, this email is in no way a legally binding agreement. The views represented in this email do not necessarily represent those of the corporation. View this message in context: RE: 4D gridding and interpolation of scattered data points http://mailinglists.scilab.org/4D-gridding-and-interpolation-of-scattered-data-points-tp4026762p4026766.html Sent from the Scilab users - Mailing Lists Archives mailing list archive http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html at Nabble.com. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Name of function's input arguments
You can do it with the macrovar primitive. S. Le 29/05/13 22:56, Adrien Vogt-Schilb a écrit : you cannot. But you can provide the function directly with the name of your variable, and transform te name of the variable into the variable by evaluating it... function f(nameofvar1,nameofvar2) var1 = evstr(nameofvar1) var2 = evstr(nameofvar2) disp(nameofvar1 + + + nameofvar2 + is +string(var1 +var2)) endfunction a=5; b=7; f(a,b) On 29/05/2013 22:49, pierre vuillemin wrote: Hello, I would like to know if there exists a way to get the name of function's inputs arguments, i.e., if I have the following function function y = f(a,b) .. endfunction and that I call it like y = f(var1,var2), is it possible to know, inside my function f, that the first input argument a is called var1 and that the second one is called var2 ? Pierre ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Subplot question
Hello, Le 13/05/13 16:38, Adrien Vogt-Schilb a écrit : Hi It is possible, just use subplot(321) subplot(322) subplot(323) subplot(324) and then subplot(313) then you get margins that are not homogeneous (this is ugly), as you can see it in the attached file scilab_subplot.png (although plotlib' subplot is ok :-D). S. On 13/05/2013 16:30, SCHULZ Wolfgang wrote: Hello, I want plot data and divided the plot region with the subplot command in 6 regions (subplot(3,2,X)) but I would like to use the first 2 regions (subplot(3,2,1) and subplot(3,2,2)) for 1 plot. In total I would then have then 5 plots. Is this possible? If yes could someone give me some hints how to do it? Thanks for your help. Wolfgang ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users attachment: plotlib_subplot.pngattachment: scilab_suplot.png___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Subplot question
Le 13/05/13 16:38, Adrien Vogt-Schilb a écrit : Hi It is possible, just use subplot(321) subplot(322) subplot(323) subplot(324) and then subplot(313) On 13/05/2013 16:30, SCHULZ Wolfgang wrote: Hello, I want plot data and divided the plot region with the subplot command in 6 regions (subplot(3,2,X)) but I would like to use the first 2 regions (subplot(3,2,1) and subplot(3,2,2)) for 1 plot. In total I would then have then 5 plots. Is this possible? If yes could someone give me some hints how to do it? Thanks for your help. Wolfgang ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users Hello, It works out of the box with the plotlib (see attached screenshot) S. attachment: sub.png___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Data Extraction Issue in Scilab
Hello,
this small script solves your problem :
fd=mopen('engine.in','r');
s=mgetl(fd);
mclose(fd);
data1=[];
for i=1:size(s,1)
w=strsplit(s(i),'/\s+/');
for j=1:size(w,1)
data1(i,j)=w(j);
end
end
[r,c]=find(data=='bore');
bore=eval(data(r(1),c(1)-1));
Hope this helps,
S.
Le 14/03/13 05:16, Munian, Devaraj a crit:
Dear Scilab Support,
We here in RNTBCI are testing Scilab to compare it against
Matlab. We are doing a pilot project to convert our script in
Matlab to Scilab for validating purpose.
If we are able to get the same result in Scilab compared with
Matlab, we will be converting all our Matlab applications into
Scilab applications.
During our pilot project which is a most simplest project we
are not able to proceed further because of issues mentioned in
the ppt.
I have also attached the data files and Matlab files for your
reference.
It will be really grateful if the issue is addressed at the
earliest.
Regards
Devaraj|Assistant
Manager| Tools and Methods |
RENAULT NISSAN TECHNOLOGY BUSINESS CENTRE INDIA
PRIVATE LIMITED
Ascendas IT Park, Mahindra World City SEZ | Plot #
TP2/1, Natham Sub Post Office |
3rd Floor | Chengelpattu | Kancheepuram District
| Tamilnadu 603002 | India |
Tel # | + 9144-67416303 |
eMail | devaraj.mun...@rntbci.com
|
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Re: [Scilab-users] Data Extraction Issue in Scilab
Sorry for the small typing errors
("data" instead of "data1") :
fd=mopen('engine.in','r');
s=mgetl(fd);
mclose(fd);
data1=[];
for i=1:size(s,1)
w=strsplit(s(i),'/\s+/');
for j=1:size(w,1)
data1(i,j)=w(j);
end
end
[r,c]=find(data1=='bore');
bore=eval(data1(r(1),c(1)-1));
S.
Le 14/03/13 05:16, Munian, Devaraj a crit:
Dear Scilab Support,
We here in RNTBCI are testing Scilab to compare it against
Matlab. We are doing a pilot project to convert our script in
Matlab to Scilab for validating purpose.
If we are able to get the same result in Scilab compared with
Matlab, we will be converting all our Matlab applications into
Scilab applications.
During our pilot project which is a most simplest project we
are not able to proceed further because of issues mentioned in
the ppt.
I have also attached the data files and Matlab files for your
reference.
It will be really grateful if the issue is addressed at the
earliest.
Regards
Devaraj|Assistant
Manager| Tools and Methods |
RENAULT NISSAN TECHNOLOGY BUSINESS CENTRE INDIA
PRIVATE LIMITED
Ascendas IT Park, Mahindra World City SEZ | Plot #
TP2/1, Natham Sub Post Office |
3rd Floor | Chengelpattu | Kancheepuram District
| Tamilnadu 603002 | India |
Tel # | + 9144-67416303 |
eMail | devaraj.mun...@rntbci.com
|
TOGETHER EVERYBODY ACHIEVES MORE
***
CONFIDENTIALITY NOTICE
This message is for the named person's use only. It may contain
confidential, proprietary or legally privileged information.
If you receive this message in error, please immediately delete
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copies of it and notify us by email to email.secur...@rntbci.com
with a copy of this message. You must not, directly or
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this message if you are not the intended recipient. RNTBCI and
any of its subsidiaries each reserves the right to monitor all
e-mail communications through its networks.
RNTBCI is neither liable for the proper, complete transmission
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in its receipt. This email was scanned for the presence of
computer viruses. In the unfortunate event of infection RNTBCI
does not accept any liability.
Any views expressed in this message are those of the individual
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Re: [Scilab-users] declaration of uint8 matrix
Le 13/03/13 18:57, sgoug...@free.fr a écrit : Hello Stéphane, De: Stéphane Mottelet stephane.motte...@utc.fr Is it possible to declare a uint8 matrix without first declaring it as a double ? ../.. Yes, you can do: --ui = resize_matrix(uint8(0),5,3) ui = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 --typeof(ui) ans = uint8 Regards Samuel ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users Thanks, that's very clever ! Maybe would it be a good idea to extend the syntax of uint8 (and others) like ui=uint8(5,3) ? S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] parallel_run under OSX
Le 06/03/13 18:27, Sylvestre Ledru a écrit : Le 06/03/2013 15:43, Stéphane Mottelet a écrit : Le 06/03/13 15:30, Stéphane Mottelet a écrit : Hello, is parallel_run supposed to work under MacOS X (tested here with Scilab 5.4.0) ? There seems to be ideas about a fix for Darwin : http://gcc.gnu.org/ml/gcc/2008-02/msg00368.html I think it is the same bug as : http://bugzilla.scilab.org/show_bug.cgi?id=12133 and it was not specific to Mac OS X. I was a missing explicit link against the OpenMP lib. Since the module parallel is loaded on the fly, the dynamic load of the library was failing and the error message not explicit enough. I will add a check in the continuous integration system to make sure it never happens again. Sylvestre ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users I have tried parallel_run with the 5.4.0 under Linux and the dynamic library cannot be loaded. Is there a platform where parallel_run works in the 5.4.0 ? S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] parallel_run under OSX
Hello, is parallel_run supposed to work under MacOS X (tested here with Scilab 5.4.0) ? --function a=g(arg1) -- a=arg1*arg1 --endfunction -- --res=parallel_run(1:10, g); A previous error has been detected while loading libsciparallel.dylib: !--error 999 Impossible de charger la bibliothèque libsciparallel.dylib : dlopen(/Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/modules/parallel/.libs/libsciparallel.dylib, 10): Symbol not found: _omp_get_num_procs Referenced from: /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib Expected in: flat namespace in /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] parallel_run under OSX
Le 06/03/13 15:30, Stéphane Mottelet a écrit : Hello, is parallel_run supposed to work under MacOS X (tested here with Scilab 5.4.0) ? --function a=g(arg1) -- a=arg1*arg1 --endfunction -- --res=parallel_run(1:10, g); A previous error has been detected while loading libsciparallel.dylib: !--error 999 Impossible de charger la bibliothèque libsciparallel.dylib : dlopen(/Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/modules/parallel/.libs/libsciparallel.dylib, 10): Symbol not found: _omp_get_num_procs Referenced from: /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib Expected in: flat namespace in /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users There seems to be ideas about a fix for Darwin : http://gcc.gnu.org/ml/gcc/2008-02/msg00368.html S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] parallel_run under OSX
Le 06/03/13 15:30, Stéphane Mottelet a écrit : Hello, is parallel_run supposed to work under MacOS X (tested here with Scilab 5.4.0) ? --function a=g(arg1) -- a=arg1*arg1 --endfunction -- --res=parallel_run(1:10, g); A previous error has been detected while loading libsciparallel.dylib: !--error 999 Impossible de charger la bibliothèque libsciparallel.dylib : dlopen(/Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/modules/parallel/.libs/libsciparallel.dylib, 10): Symbol not found: _omp_get_num_procs Referenced from: /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib Expected in: flat namespace in /Applications/scilab-5.4.0.app/Contents/MacOS/share/scilab/../../lib/scilab//libsciparallel.dylib S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users There seems to be ideas about a fix for Darwin : http://gcc.gnu.org/ml/gcc/2008-02/msg00368.html S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers
Hello, Replacing the squared L2 norm by the L1 norm in the linear regression gives a good robustness to outliers (cf. Donoho and al. papers). The problem is then non differentiable but you can implement it by iteratively reweighting the classical L2 method (IRLS method), or by writing an equivalent 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 with smoothing and outliers is that the definition of a outlier depends on the field. How can Scilab know what a strong outlier is? I personally would try Fourier filtering: a strong outlier means a steep slope and therefore correspond to a high frequency. Thus fft2, set high frequencies to 0 (with possibly a smooth transition), then inverse fft2 -- ifft2 does not exist, I never used 2-dimension Fourier transform so I don't know if the inverse is easy to perform... ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers
Hello, I have written a little script making the comparison between L1 and L2 norm. For the L1 case, I have used leastsq and cheated by returning the square root of the abs of the residue and the 'nd' option. function r=resid(coef,x,y,z) r=sqrt(abs(z-(coef(1)+coef(2)*x+coef(3)*y))); r=r(:); endfunction n=10; [x,y]=meshgrid(linspace(-1,1,n)); z=1+x+y+rand(x,'normal')/10; z(n,n)=20; // outlier // L2 case A=[x(:)^0 x(:) y(:)]; coefl2=A\z(:); disp(coefl2); // L1 case [l1norm,coefl1]=leastsq(list(resid,x,y,z),coefl2,'nd'); disp(coefl1); Things are not supposed to work so well because 'nd' is only meaning that the function to minimize in non-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 for the useful L1-references and for the insight on iterative L2 methods and to the others for their repplies. PS: Strong outliers or spikes have infinite bandwidth and therefore bandpass filtering/convolution does not seem, a priori, to be the most effective method to remove them. Regards, Rafael -Original Message- From: users-boun...@lists.scilab.org [mailto:users-boun...@lists.scilab.org] On Behalf Of Stéphane Mottelet Sent: Monday, March 04, 2013 10:14 AM To: users@lists.scilab.org Subject: Re: [Scilab-users] Surface smoothing in Scilab, immune to outliers Hello, Replacing the squared L2 norm by the L1 norm in the linear regression gives a good robustness to outliers (cf. Donoho and al. papers). The problem is then non differentiable but you can implement it by iteratively reweighting the classical L2 method (IRLS method), or by writing an equivalent 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 with smoothing and outliers is that the definition of a outlier depends on the field. How can Scilab know what a strong outlier is? I personally would try Fourier filtering: a strong outlier means a steep slope and therefore correspond to a high frequency. Thus fft2, set high frequencies to 0 (with possibly a smooth transition), then inverse fft2 -- ifft2 does not exist, I never used 2-dimension Fourier transform so I don't know if the inverse is easy to perform... ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Scilab is not a pipe
Le 26/02/13 17:45, Adrien Vogt-Schilb a écrit :
hi
is there any reasons why I can't type from a console:
scilab myfile.sce
and expect scilab to execute myfile.sce and redirect output to the
standard output?
I can almost to that with
scilab-cli -f
and
scilab-cli -e
but i still have to exit manually at the end, or construct an alias ofr
scilab-cli -e exec('#1');quit
or something
Hello,
I hope you solved your problem, but it is a pity that nobody noticed
your evocation of Magritte's famous painting :-)
S.
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Re: [Scilab-users] Problem with ATOMS
Hello,
this problem is fixed in the current developpement version of the
plotlib, a new version will be released this week.
S.
Le 28/01/13 08:52, Vincent COUVERT a écrit :
Hello,
It seems that this error is due to plotlib since the error message
indicates that the error occurred at line 46 of uicontrol and this
line does not exists in Sciab uicontrol function (which is a C function).
Can you report this issue to the author
(http://atoms.scilab.org/toolboxes/plotlib)?
Regards.
Le 27/01/13 22:54, René Grognard a écrit :
In my professional work I had access and used MATLAB for many years.
Now retired I have to switch to some free/less expensive equivalent
software and I just downloaded Scilab that seems to offer more
toolboxes.
However ATOMS does not seem to work.
My PC is a HP ProBook 4730s running Windows 7. (Cygwin 1.7 is
installed and coud be used to run WScilex.exe.)
When I started Scilab-5.4.0 all appeared to be well:
Startup execution:
loading initial environment
--atomsSetConfig('Verbose','True')
ans =
1.
--atomsGetConfig()
ans =
downloadTool: curl
Verbose: True
The window Main categories - ATOMS was functional and allowed me to
install say the Plotting library particularly promising to a MATLAB
ex-user --- I get the message:
Installation done! Please restart Scilab to take changes into account.
OK restarting:
Startup execution:
loading initial environment
Start plotlib toolbox 0.43
Load macros
Load help
!--error 999
'background' property does not exist for this handle.
at line 46 of function uicontrol called by :
at line 207 of function atomsGui called by :
ms) then atomsGui(); else disp(gettext(
while executing a callback
The error message itself seems garbled!
The next one seems clearer:
--atomsGui()
!--error 999
'background' property does not exist for this handle.
at line 46 of function uicontrol called by :
at line 207 of function atomsGui called by :
atomsGui()
The window Main categories - ATOMS which appears is now empty and
indeed as dead as a dodo.
I checked that I have full control over the SCIHOME folder and its
contents.
I regularly update the free JAVA which I believe is used by Scilab.
What did I do wrong/missed in installing Scilab-5.4.0?
Any help/info will be appreciated.
Regards,
René.
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Re: [Scilab-users] u .^ k ?
Le 19/12/12 11:17, Lamy Alain a écrit : Hi, Does anyone know how to perform efficiently an operation like : u .^k with: u = [u1, u2, ..., un] // ui : real numbers and: k = [k1; k2; kp] // ki : positive integers The result being : [ u1^k1, u2^k1, ..., un^k1; u1^k2, u2^k2, ..., un^k2; ... u1^kp, u2^kp, ..., un^kp ] I know how to do it with cumprod (for instance), but it does not seem to be efficient enough. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users maybe u(ones(1,p),:).^k(:,ones(1,n)) ? S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] How to plot 3d implicit surface
Le 23/11/12 09:14, Orbeman a écrit : Hello, I would like to plot a 3d implicit surface defines with an equation like f(x, y, z)=0. There's no parametric transformation and is not possible to express for example z=g(x, y). Does anyone have an idea ? Thank a lot. -- View this message in context: http://mailinglists.scilab.org/How-to-plot-3d-implicit-surface-tp4025307.html Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users What is your equation ? S. ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] root calculation
Le 05/11/12 14:53, Adrien Vogt-Schilb a écrit : On 05/11/2012 14:45, Paul Carrico wrote: All, Thanks for the feedback ... ... a basic plot shows the curve is monotonic (see attachment) ; I should plot a 3D curve in order to study the influence of the exponents for example to verify there's one and only one root ... ... I've to code a fast function to solve this kind of equation ... hundred thousand (and maybe million) of similar equation to solve :-~ hi beware not to use one single fsolve to solve a set of independent equations; somethign like function [a b] = f(x,y) a=x^3 -1 b= y^(0.6456) +4y^.45 - .566 endfunction fsolve([0 0],f) this is a bad idea, because fsolve will systematically calculate db/dx and da/dy, this would take much longer and much more memory than just fsolving x^3 -1, and then y^(0.6456) +4y^.45 - .566 of course this is much worse when you have N outputs and N inputs to your function, in this case fsolve calculates N^2 derivatives at each step... fsolve is clearly missing a jacobian pattern option... S. That's one of the reasons why I asked about the possible parallelization Regards Paul -Message d'origine- De :users-boun...@lists.scilab.org [mailto:users-boun...@lists.scilab.org] De la part demichael.bau...@contrib.scilab.org Envoyé : lundi 5 novembre 2012 13:59 À : International users mailing list for Scilab. Objet : Re: [Scilab-users] root calculation Hi, This is a nonlinear equation, for which we are searching a zero. The fsolve function is designed for this purpose: http://help.scilab.org/fsolve Notice that there might not be a solution. This is why the algorithm is an optimization problem, where the square norm of f(x) is minimized. This method also works for a system of nonlinear equations, so that this is (much) more general than dichotomy, secant, Brent, etc... which are one-variable solvers. No 1-variable method is available at the Scilab level, to my knowledge. But the Brent method is used internally in the computation of the inverse Cumulated Distribution Function (quantile) by the DCDFLIB library (e.g. X=cdfnor(X,Mean,Std,P,Q)). Notice that Matlab has the fzero function : http://www.mathworks.fr/fr/help/matlab/ref/fzero.html which uses Brent's method. But this method is not available directy in Scilab. This is a good design choice in my opinion, since fsolve is much more general. But I guess that fzero may be faster and more robust, in some cases. Best regards, Michaël Le 2012-11-05 13:13, Paul Carrico a écrit : Dear all, This a stupid question, but how can I solve directly in, Scilab an equation such as : 0.403*X^(-0.121) + 60.5*X^(-0.73) - 0.1839 = 0 ? Is-it necessary to code a function ? from memory : dichotomy method, secant method, Brent one etc. ... Regards Paul ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
