Re: [Scilab-users] Set default working directory at start

[noguchi]

Thanks.

I finaly find the place I should set.

Thanks a lot.


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宛先: "noguchi" <nogu...@kje.biglobe.ne.jp>
送信済み: 2017年4月12日(水曜日) 20:13:04
件名: Re: Set default working directory at start

Le 12/04/2017 à 13:02, noguchi a écrit : 
> Thanks. 
> 
> However, I don't really understand what does "Menu Edit/Preferences " 
> mean. 
> 
> From the SCilab console, I know there is SCilab setting menu. We can 
> change color, SCinotes and Xcos settings. 
> However, I failed to find the place so thatI can change Home directry. 

"General" item => "Startup directory" frame 

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Re: [Scilab-users] Set default working directory at start

[noguchi]

In my Scilab console, I don't have such "Startup directory" in "General" item.

In general Item, I have following three items:
1. Confirmation Dialogue
2. Desktop Layout
3. Shortcut

How I can find "Startup directory" in my Scilab 5.5.2 windows version with 
language = Japanease case?



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送信済み: 2017年4月12日(水曜日) 20:13:04
件名: Re: Set default working directory at start

Le 12/04/2017 à 13:02, noguchi a écrit : 
> Thanks. 
> 
> However, I don't really understand what does "Menu Edit/Preferences " 
> mean. 
> 
> From the SCilab console, I know there is SCilab setting menu. We can 
> change color, SCinotes and Xcos settings. 
> However, I failed to find the place so thatI can change Home directry. 

"General" item => "Startup directory" frame 

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Re: [Scilab-users] Set default working directory at start

[noguchi]

Claus-san,


My home and SCIHOME are as follows:

 home  =  C:\Users\Noguchi_Yoshikazu   
 
 SCIHOME  =  C:\Users\NOGUCH~1\AppData\Roaming\Scilab\scilab-5.5.2 


How I can change my SCIHOME Directry to my prefered Directory?
I failed to find such menu in Scilab console. (Scilab 5.5.2)




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送信済み: 2017年4月12日(水曜日) 16:23:22
件名: Re: Set default working directory at start

Hi Noguchi-san 

Response from Wolfgang Schulz is good. I just wish to elaborate, there 
are different settings for directories, like "home" and "SCIHOME" ... 
Please see for example: https://help.scilab.org/docs/6.0.0/en_US/home.html 

Best regards, 
Claus 

On 12-04-2017 07:05, noguchi wrote: 

> Hello, 
> 
> 
> I am using Scilab 5.5.2  64bit on my windows 7 PC. 
> 
> I am not sure how I can change the starting directory. 
> May I ask how I can change the starting directory when we start Scilab? 
> 
> 
> Thanks. 
> 
> 
> 
> -- 
> View this message in context: 
> http://mailinglists.scilab.org/Scilab-users-Set-default-working-directory-at-start-tp4033145p4036196.html
>  
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Re: [Scilab-users] Set default working directory at start

[noguchi]

Thanks.

However, I don't really understand what does "Menu Edit/Preferences " mean.

>From the SCilab console, I know there is SCilab setting menu. We can change 
>color, SCinotes and Xcos settings.
However, I failed to find the place so thatI can change Home directry.


Noguchi

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宛先: "noguchi" <nogu...@kje.biglobe.ne.jp>
送信済み: 2017年4月12日(水曜日) 15:44:15
件名: Re: Set default working directory at start

Menu Edit/Preferences 



> -Ursprüngliche Nachricht- 
> Von: users [mailto: [hidden email] ] Im Auftrag von noguchi 
> Gesendet: Mittwoch, 12. April 2017 07:06 
> An: [hidden email] 
> Betreff: Re: [Scilab-users] Set default working directory at start 
> 
> Hello, 
> 
> 
> I am using Scilab 5.5.2  64bit on my windows 7 PC. 
> 
> I am not sure how I can change the starting directory. 
> May I ask how I can change the starting directory when we start Scilab? 
> 
> 
> Thanks. 
> 
> 
> 
> -- 
> View this message in context: 
> http://mailinglists.scilab.org/Scilab-users-Set- 
> default-working-directory-at-start-tp4033145p4036196.html 
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at 
> Nabble.com. 
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Re: [Scilab-users] Set default working directory at start

[noguchi]

Hello, 


I am using Scilab 5.5.2  64bit on my windows 7 PC.

I am not sure how I can change the starting directory.
May I ask how I can change the starting directory when we start Scilab? 


Thanks.



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Re: [Scilab-users] lookup_f in XCos

[noguchi]

Hello,


I also trying to use lookup_f block and I failed to find a manual to
undestand how to use it.

If I edit curve in the edit_curve window and close it, the curve is back to
original curve.

If someone has a memo how we should use this block, could you please share
it?


Thanks,

Noguchi



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[Scilab-users] FACT 0.6-1: error message

[noguchi]

I am using twoPCs. One PC has Salab 5.5.0 / FACT 0.4-3 and othe PC has Scilab
5.5.2 / FACT 0.6-1.

Attached scn file works with FACT 0.4-3. However, it doesn't work with FACT
0.6-1 and get following error message:

-->exec('C:\Users\noguc\Desktop\Modeling\教育用資料\Scilabによる統計解析入門\Scilab_Manuals\FACT_getting_started\data\Fact_nir_exe01_Linear_Regression.sce',
-1)
curves(nir.x(3,:),'b','NIR Wave Length [nano
  !--error 144 
指定したオペランドに関する処理が定義されていません.
関数 %l_e を確認またはオーバーロード定義してください.
at line  10 of exec file called by :
r_Regression.sce', -1


It seems that "Curves" command doesn't work on FACT 0.6-1. Could you please
advise me how I should avoid this error message?  Thanks.

Y. Noguchi


Fact_nir_exe01_Linear_Regression.sce
<http://mailinglists.scilab.org/file/n4033929/Fact_nir_exe01_Linear_Regression.sce>
  



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Re: [Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Tim,

Thank you for your message.

I read datafit help several times. However, it is quite difficult for me to 
understand it.

> Model: ym(n)=ym(n-1)*amp+Kpm*bmp*u(n-1-Tdm)  where n=step=1:1:500)
> Where amp=exp(-Tsample/Taup), Tsample=1, bmp=1-amp
> Object function: sum of square of (y(n)-ym(n)) 

Variables to be changed to minimize the value of object functions are: Kp, Taup 
and Tdm

How should I write Scilab commands for this problem?


Thanks,


Y. Noguchi


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送信済み: 2016年3月26日(土曜日) 02:57:03
件名: Re: Optimization: First order delay and dead time TF model ID, CUTEr

On Fri, 2016-03-25 at 09:54 -0700, noguchi wrote: 

> Hello, SCilab Users, 
> 
> May I ask your help? 
> 
> I still not find practical solution to minimize my object function by Scilab 
> tools. 
> Model: ym(n)=ym(n-1)*amp+Kpm*bmp*u(n-1-Tdm)  where n=step=1:1:500) 
> Object function: sum of square of (y(n)-ym(n)) 
> 
> 
> Using Excel, I made same objective funtion and minimize it by solver. The 
> solution is sometimes good but some times bad. Therefore, I still need 
> Scilab code to solve this problem. 
> 
> May I ask how I can wrote scilab commend to solve this problem? 
> 
> Thank you for your help. 
> 
> 
> Y. Noguchi FODDT_ModelID_SISO_r0.xls 
> < http://mailinglists.scilab.org/file/n4033859/FODDT_ModelID_SISO_r0.xls >   
> 
> 
> 
> 
> 
> 
> -- 
> View this message in context: 
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>  
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> 
I don't have time to work up an example of this, but -- have you looked 
at the help page for datafit?  It looks like it'll do the job (I know 
how to do this with optim, but I suspect that I should have been using 
datafit for a lot of that stuff). 

You may want to make sure you know what you're optimizing _for_ -- I 
assume that ym(0) = 0, and that amp, Kpm, bmp and Tdm are your free 
parameters. 

If so, you may want to revisit your problem -- Kpm and bmp are 
redundant; if you're trying to optimize on both of them then you may be 
confusing the optimizer. 

-- 

Tim Wescott 
www.wescottdesign.com 
Control & Communications systems, circuit & software design. 
Phone: 503.631.7815 
Cell:  503.349.8432 





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[Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Hello, SCilab Users,

May I ask your help?

I still not find practical solution to minimize my object function by Scilab
tools.
Model: ym(n)=ym(n-1)*amp+Kpm*bmp*u(n-1-Tdm)  where n=step=1:1:500) 
Object function: sum of square of (y(n)-ym(n))


Using Excel, I made same objective funtion and minimize it by solver. The
solution is sometimes good but some times bad. Therefore, I still need
Scilab code to solve this problem.

May I ask how I can wrote scilab commend to solve this problem?

Thank you for your help.


Y. Noguchi FODDT_ModelID_SISO_r0.xls
<http://mailinglists.scilab.org/file/n4033859/FODDT_ModelID_SISO_r0.xls>  






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Re: [Scilab-users] Plot: Back Ground Color

[noguchi]

To HTH 

Thanks. I am using Scilab 5.5.2.

Whe I insert following command after the plot command, back ground color except 
lower figure becomes black. If I change tjhe value from 1 to 100, it shows 
black. It desn't work as I expected.

f = gcf(); 
f.background = 1


My commad is as follows:

figure(1)
subplot(2,1,1)
plot(t,y,'r')
title('step test data')
ylabel('process output (y)')
set(gca(),"grid",[1 1])
f = gcf(); 
f.background = 100; 

subplot(2,1,2)
plot(t,u,'b')
set(gca(),"grid",[1 1])
f = gcf(); 
f.background = 100; 

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宛先: "noguchi" <nogu...@kje.biglobe.ne.jp>
送信済み: 2016年3月22日(火曜日) 18:41:32
件名: Re: Plot: Back Ground Color

Le 22/03/2016 08:16, noguchi a écrit : 
> To HTH 
> 
> Thanks for your advise. I read the help but I tottally confused. 
> 
> I added following command after plot command, but it doesn't work. 
> 
> gcf().background = 1; 
With Scilab 6, it does, due to the new feature called "Recursive 
extraction". 
With scilab < 6: 
f = gcf(); 
f.background = 1; 

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Re: [Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Dear Harpreet,


Thank you for advise. It is little bit difficult for me to write down the
correct Scilab commands by only reading the datafit help.

Is following command right?   (ym(n)=ym(n-1)*amp+Kpm*bmp*u(n-1-Tdm)  where
n=step=1:1:500)


function y = FODDT(u,Kpm,Taum,Tdm,step,Tsamp)
amp=exp(-Tsamp/Taum);
bmp=1-amp;
[ym,amp,bmp]=ym(step-1)*amp+Kpm*bmp*u(step-1-Tdm)
endfunction

Don't we need to write the object function? Object function is minimize the
sum of error square = sum of (y(i)-ym(i))^2

How I should represent above equation in Scilab?

Thanks for your kind advise.

Best Regards,



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Re: [Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Dear Mr. Serge,

Thanks for your advise.

Could you please advise me how I should formulate my problem using
fminserch?


Y. Noguchi



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Re: [Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Dear Harpreet,


Thank you for advise.

I am not familiar with fmincon or fminserach, I would like to start from
simple objective function. 

First of all, I would like to identify the following parameters for SISO
case: 

K, Tau, TD:   K/(Tau*s +1) * exp(-TD*s) =ymodel

We have step test data, y (Process output) and U (process input). 

Object function: Min sum of ( (y-ymodel)^2) 


Could you please tell me how I can formulate my objective function using
such optimization tool and foind optimum parameters?

Thanks,




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[Scilab-users] Optimization: First order delay and dead time TF model ID, CUTEr

[noguchi]

Hello, Scilab users,


I would like to do Model Identification using step test data with transport
delay.
First of all, I would like to identify the following parameters for SISO
case:

K, Tau, TD:   K/(Tau*s +1) * exp(-TD*s)

We have step test data, y (Process output) and U (process input).

Object function: Min ( (y-ymodel)^2)


I guess CUTEr can be used to solve this problem. I try to understand how to
use CUTEr using help file but failed.

If you are familiar with how to use CUTEr or other optimization command in
Scilab, could you please advise.


Thanks.


Y. Noguchi



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[Scilab-users] SS modeling using Identification tool box

[noguchi]

I could get ARX model using the data generated by first order delay + dead
time transfer function model as shown below:

//ARX model ID 
z=poly(0,'z');
h=(0.066/(z-0.934))*(1/z^10)
u=zeros(1,200);
for i=10:1:100
u(1,i)=1;
end
for i=101:1:200
u(1,i)=0.5;
end
t=1:1:200;
y=flts(u,tf2ss(h)); //step response
plot(t,y,t,u)
//
figure(2)
[m] = arIdent(y,u,y,u,1:4,1:4,0,0:10,0);
//[fit, ys] = valSim(m.a, m.b, yv, uv);
[fit, ys] = valSim(m.a, m.b, y, u);
plot(y);

Howeverm using same data, I faced error message if I tried to get SS model
with following commnds:
//SS Model ID
yi=y(1:90);ui=u(1:90);
yv=y(91:$);uv=u(91:$);
yv=y;uv=u;
[m,A,B,C,D,K,R,x0,fit,fitTable] =
subspaceIdent(yi,ui,yv,uv,[6:8],[2:4],0,0);
[yp x] = lsim(A-K*C,[K B-K*D],C,[zeros(size(D,1),size(yv,2))
D],[yv';uv'],x0); // prediction
plot(yv);
plot(yp,'-r')
[Ds,NUM,chi]=ss2tf(m)

 subspaceIdent(yi,ui,yv,uv,[6:8],[2:4],0,0); <== This command made following
error messages:

-->[m,A,B,C,D,K,R,x0,fit,fitTable] =
subspaceIdent(yi,ui,yv,uv,[6:8],[2:4],0,0);
 !--error 27 
zero division...
at line  13 of function myhouseholder called by :  
at line   9 of function qrhouse called by :  
at line 191 of function subid called by :  
at line  89 of function subspaceIdent called by :  
i,yv,uv,[6:8],[2:4],0,0)

May I ask how I can identify the SS model using this quite simple data set?


Y. Noguchi



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Re: [Scilab-users] Model ID of First order delay and Dead Time Process

[noguchi]

Dear Mr.Serge, 


Thank you for your advise.

I didn't know that step should start from the beginning.

If there is a scilab tool to identify transport delay and continuous time
transfer functions (Fist order delay, scond order delay, integral), it would
be nice.


Thanks.


Y. Noguchi



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[Scilab-users] Model ID of First order delay and Dead Time Process

[noguchi]

Hello,


May I ask your help?

1. How can I specify time delay for my transfer function in scilab. I found
it in matlab, but I failed to find it in SCilab. 

2. Model ID
I would like to identify first or second order transfer function + dead time
from step test data (SISO).
If it is required to identify the other models, such as SS or ARX. It is
fine. Then, I would like to convert the model to transfer functioin + dead
time model.

Thanks.


Y. Noguchi



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Re: [Scilab-users] Demo data for Identification Tool Box: Dryer.dat

[noguchi]

Dear All,


I found the dry.dat. If I inside of the zip file of identification tool box,
it is available.


Thanks.



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[Scilab-users] usage of libsvm

[Y. Noguchi]

Dear Scilab Users


I would like to lean how to use libsvm  Toolbox - (1.4.5).
I would like to do multi variable regression by using this tool box.

If you have any tutrial material for beginner of this tool box, could you 
please please send it to me.

Thank you for your help.


Y. Noguchi

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[Scilab-users] usage of libsvm Toolbox

[noguchi]

Dear Scilab Users


I would like to lean how to use libsvm  Toolbox - (1.4.5).
I would like to do multi variable regression by using this tool box.

If you have any tutrial material with sample data for beginner of this tool
box, could you please please send it to me.

Especially, I would like to know that how I can know the regression equation
and their parameters so that I can implement it in the computer to calculate
the predicted value on-line.

Thank you for your help.


Y. Noguchi



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Re: [Scilab-users] Scilab Error Message: CVode

[noguchi]

Helllo, Paul,


Thank you for your advise. It works. 

It is difficult for me to reach this solution by looking at the error
message. Is it difficult for you to modify the error message so that
begineer of Scilab can understand?


Thanks.

Y. Noguchi



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Re: [Scilab-users] Scilab Error Message: CVode

[noguchi]

Thank you for your feedback.

I reduced solver tolerance from Simulation, Parameter settings as per
attached file.
I changed 1.0E-6  ==> 1.0E-12 

However, I still get same error message.

May I ask your further help to solve this problem?

SCilab_Sim_Setting.jpg
  



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Re: [Scilab-users] Scilab Error Message: CVode

[noguchi]

Dear Scilab Users, PITAU_r1.zcos
  

After that I updated my Scilab to 5.5.2 and do the same. I got following
error message: 

"CVcode at t-202, mxsteps taken before reaching tout." 

Could you please advise me how I can fix this issue. 





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[Scilab-users] Scilab Error Message: CVode

[Y. Noguchi]

Dear Scilab Users


May I ask your help?

I got followin error message when I run my ZCOS model:

"CVode: AT =1.00122 and h=5.59384e-1, thev error test failed repeatedly or with 
|h|=hmin.

I am Using Sclab 5.5.0 on my Windows 7 PC.

I attached my ZCOS Model for your review and it is too difficult for me to 
understand this error message. 


Thanks for your help.


Y. Noguchi



PITAU_r0.zcos
Description: Zip archive
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