Re: [Scilab-users] Simple Date & Time Plotting

[David Chèze]

Hi Pat and all,

I was looking for similar simple feature for plotting time series with
readable date time format and I can share an intermediate approach to update
the x-ticks with a call to function labxdtv(), cf linked file  labxdtv.sci
  
There's no callback function, the function is called after the plot action
and after every changes in windows size or zoom level : initial plot is like
plot2(dtnm,Donnees), with dtnm a vector of datenum values and Donnees a
matrix of related data to plot. After the figure is plot at first time or
after every changes in windows size or level of zoom, call again labxdtv, it
regraduates automatically the x-axis according to the datanum span and
convert the datenum in readable date time vector format (auto_ticks are set
to on in the function).

Would be great to have in scilab a more powerful/flexible builtin
function... :) 

David



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Re: [Scilab-users] ?==?utf-8?q? fortran example call_scilab api

[David Chèze]

Hi Antoine,

thanks for your comment.
I've just tried on the same machine with scilab 5.5.1 (already installed),
the compilation works fine but link failed:
Error   1error LNK2019: unresolved external symbol _inisci_ referenced 
in
function _MAIN__callsci.obj 
Error   2error LNK2019: unresolved external symbol _scirun_ referenced 
in
function _MAIN__callsci.obj 
Error   3error LNK2019: unresolved external symbol _matz_ referenced in
function _MAIN__callsci.obj 

calling convention issue with the underscore ?


Do you where in core module directory I can find the header for the
functions inisci, scirun and matz?

In any case I would like also to call scilab 6 from fortran, under windows,
if you have any other example visual studio project, any suggestion
appreciated ! :) 


David




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[Scilab-users] fortran example call_scilab api

[David Chèze]

Hi,

W7x64 scilab 6 + IntelVisualFortran

I tried to build the project provided in
scilab\modules\call_scilab\examples\call_scilab\fortran but compilation
failed on :
include 'stack.h'

which is unknown with the usual path.

May you explain which file was originally aimed to include ?

Thanks,
David




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[Scilab-users] scilab 6 nighlty builds download link broken

[David Chèze]

Hi all,

the nighlty builds download links are broken, not possible to download.
 

Thanks for solving the issue,
David




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Re: [Scilab-users] Issue with Using atomsTest

[David Chèze]

Hi all,
to make it works actually, I needed to force the genlib. Following your
recommandations:

David Chèze wrote
> // after loading it:
> 
> [?,path] = libraryinfo("stixboxlib");
> 
> cwd = pwd();
> 
> cd(path);
> 
> genlib stixboxlib
> 
> cd(cwd)
> 
> If for you stixbox is autoloaded at startup, you need to insert the
> following just before genlib:
> 
> predef clear

I just replaced genlib stixbox by genlib("stixboxlib",path,%t)


Thank you 

David




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Re: [Scilab-users] Issue with Using atomsTest

[David Chèze]

Hi Samuel,

did you find a workaround to make the stixbox 2.5 module running on scilab 6
in the end? I submitted bug at bugzilla (scilab side) and on the forge
(stixbox module) on this specific issue but did not receive any comments
since then.

Thank you,

David



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[Scilab-users] scilab 6 - debug script

[David Chèze]

Hi all,

I wonder there is a trick to debug a script ,not a function ?
My script calls functions but I would like to set breakpoints along the
script not in the functions.

Thanks for your advices,

David




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[Scilab-users] reset local atoms gui

[David Chèze]

Hello 

I installed a recent scilab 6.0 nightly builds (WIN7_64bits) which fixed an
annoying bug for me and while reinstalling some atoms module within the
atoms gui it crashes the gui and whole scilab when I pressed "previous"
button. The module was properly installed and I can use it. I can install
new atoms via the  command line console when I know the name of the package
but I can't start anymore the atoms GUI, it crashes scilab each time : how
could I repair/re-initialize the atoms GUI only (or full atoms)? de/re
-install all ?

Thanks for your help

David



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[Scilab-users] least squares non linear optim failures

[David Chèze]

Hi Paul(s) and all,

I looked forward to the specific failures I reported for Scilab 6 for
leastsq, lsqrsolve, datafit and it looks like it is caused by fsolve call
inside my cost function while scilab 5.5 managed it well. I reported a
complete  test case
   that shows
the bug in bug report 15117
  . the bug 15117 tilte
mentions only lsqrsolve but it's showing also leastsq and datafit failures.

Thanks for curing the patient !

David




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Re: [Scilab-users] non linear optim

[David Chèze]

Hi all,

I worked further on this issue and found that it's new (unwanted) behavior
in scilab 6 since the script performs well when run under scilab 5.5.1 on
the same machine WIN7_64bits.
In scilab 6 it fails with the error message : User function 'costf' have not
been setted.

while in scilab 5.5.1: 

[fopt, xopt]=leastsq(iprint,evaloptiM1D,x0')

* enters -qn code- (without bound cstr)
dimension= 2, epsq=  0.2220446049250313E-15, verbosity level: imp=  
  
2
max number of iterations allowed: iter=   100
max number of calls to costf allowed: nap=   100

 iter num1, nb calls=   1, f= 0.4607E+05
 iter num2, nb calls=   3, f= 0.2185E+05
 iter num3, nb calls=   6, f= 0.2138E+05
 iter num4, nb calls=   7, f= 0.2130E+05
 iter num5, nb calls=   8, f= 0.2128E+05
 iter num6, nb calls=   9, f= 0.2128E+05
 iter num7, nb calls=  10, f= 0.2128E+05
 iter num8, nb calls=  11, f= 0.2128E+05
 iter num9, nb calls=  12, f= 0.2128E+05
 iter num   10, nb calls=  13, f= 0.2128E+05
 iter num   11, nb calls=  14, f= 0.2128E+05
 iter num   11, nb calls=  22, f= 0.2128E+05
* leaves -qn code-, gradient norm=  0.4410737793778105E-02
Fin de l'optimisation.

 xopt  =
 
1.22132570.7702730  
 fopt  =
 
21284.818  


Then I guess it's not a limitation in the algorithm itself but rather
something at the interface that has changed in scilab 6, also because the
message is issued early in the execution , about 1 s after launching the
script while the successful optimization requires at least 10-20s: probably
there's only or not even one full iteration performed before it issues
escape message in scilab 6 .
 I can't provide the detail of the function to optimize however I could
provide you with more detailed log from execution.

Regards,

David






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Re: [Scilab-users] non linear optim

[David Chèze]

Hi Paul,

the leastsq examples run properly on my machine, as well as other tests with
simple functions inside.

I looked at leastsq first because of the minimal request very simple way to
express the problem f=costf(X) with functions that are not quickly
vectorizable. Otherwise I was used to datafit. I saw in lsqrsolve that we
need to provide the numbers of equations to run the solver, maybe it's
similar for leastsq ? In my case the costf function evaluates the model over
7 tests, each test is 6 to 7 evaluations of different configurations. I'm
limiting to 2 unknowns to calibrate in my model so the problem can be solve
a priori  but leastsq is not informed of that a priori . 

and 



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[Scilab-users] non linear optim

[David Chèze]

Hi,

I'm running scilab 6.0 on WIN7_64 and I failed to run optimisation based on
'optim' functions (leastsq) while fminsearch performed well. The call in my
code are summarized below :

-
function RMSE=evaloptiM1D(X)
... calls to other macros to calculate the "cost"=RMSE returned value
endfunction

x0= [1.27 ; 0.8]

[fopt, xopt]=leastsq(evaloptiM1D,x0)   //fail

[x, fval]=fminsearch(evaloptiM1D,x0',opt)  //run ok


--
fminsearch returns successfully X = 1.22 0.77  
while
leastsq starts then fails with :

User function 'costf' have not been setted.

Any idea about what it means and where it could comes from ?

Thanks for your advice


David
 




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Re: [Scilab-users] global constant definition for module

[David Chèze]

Hi Serge,

thanks for this solution. I've just run your example on scilab 6 beta 1 and
it fails complaining about undefined variable A. then I ran the example for
lib function in scilab help and it fails equally : it looks like it is
broken then I will report a bug on this unless already done.

Thank you

David




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[Scilab-users] global constant definition for module

[David Chèze]

Hi all,

I would like to define a variable in a user module in such a way that this
constant would be available for all functions (also out of the module) as a
"hidden(you don't need to see it inbrowsvar), protected (should not be
possible to clear it, even with clearglobal )" global variable as soon the
module is loaded: do you have suggestions how to do it within scilab?

David



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[Scilab-users] issue providing command to powershell

[David Chèze]

Hi all,

to automate some text file encoding conversion to UTF-8 (for csvRead) under
windows platform, I'm using the powershell windows native scripting language
:

PS get-content -Path "C:\Users\dc227480\Documents\temp\Données IAQ SENSE
29_01_2016 10_45_00 1.dat.csv" | out-file
"C:\Users\dc227480\Documents\temp\Données IAQ SENSE 29_01_2016 10_45_00
1.UTF-8.csv" -encoding utf8
 
that is running properly  in powershell window but fails when I ask from
scilab:
pscmd="get-content -Path ""C:\Users\dc227480\Documents\temp\Données IAQ
SENSE 29_01_2016 10_45_00 1.dat.csv"" | out-file
""C:\Users\dc227480\Documents\temp\Données IAQ SENSE 29_01_2016 10_45_00
1.UTF-8.csv"" -encoding utf8"
powershell(pscmd)
 ans  =

!Get-Content : Impossible de trouver un paramètre positionnel acceptant 
 
!
!   
 
!
!l'argument «IAQ».  
 
!
!   
 
!
!Au caractère Ligne:1 : 1   
 
!
!   
 
!
!+ get-content -Path C:\Users\dc227480\Documents\temp\Données IAQ SENSE 
 
!
!   
 
!
!29_01_2016  ...
 
!
!   
 
!
!+
~ 
!
!   
 
!
!~~~
 
!
!   
 
!
!+ CategoryInfo  : InvalidArgument : (:) [Get-Content],
ParameterBi   !
!   
 
!
!   ndingException  
 
!
!   
 
!
!+ FullyQualifiedErrorId :
PositionalParameterNotFound,Microsoft.PowerShell   !
!   
 
!
!   .Commands.GetContentCommand 
 
!
!   
 
!
!   
 
!
Then I remove space from the file name and it works:
pscmd="get-content -Path
""C:\Users\dc227480\Documents\temp\Données_IAQ_SENSE_29_01_2016_10_45_00_1.dat.csv""
| out-file
""C:\Users\dc227480\Documents\temp\Données_IAQ_SENSE_29_01_2016_10_45_00_1.UTF-8.csv""
-encoding utf8"
powershell(pscmd)

Is there a workaround to make the powershell() function from scilab to
provide proper string to powershell ?

Thank you for your feedback,
David




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Re: [Scilab-users] issue providing command to powershell

[David Chèze]

 finallly it's solved: 
you don't need doubling, you don't need tripling but you need four double
quotes and it works like a charm ! Good to know...

thank you ,

David


--> pscmd="get-content -Path C:\Users\dc227480\Documents\temp\Données
IAQ SENSE 29_01_2016 10_45_00 1.dat.csv | out-file
C:\Users\dc227480\Documents\temp\Données IAQ SENSE 29_01_2016 10_45_00
1.UTF-8.csv -encoding utf8"
 pscmd  = 

 get-content -Path ""C:\Users\dc227480\Documents\temp\Données IAQ SENSE
29_01_201 
 6 10_45_00 1.dat.csv"" | out-file
""C:\Users\dc227480\Documents\temp\Données IAQ 
  SENSE 29_01_2016 10_45_00 1.UTF-8.csv"" -encoding utf8
 
--> powershell(pscmd)
 ans  =

[]




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Re: [Scilab-users] issue providing command to powershell

[David Chèze]

Hi Samuel,

I tried but was not successful:
--> pscmd="get-content -Path """C:\Users\dc227480\Documents\temp\Données IAQ
SENSE 29_01_2016 10_45_00 1.dat.csv""" | out-file
"""C:\Users\dc227480\Documents\temp\Données IAQ SENSE 29_01_2016 10_45_00
1.UTF-8.csv""" -encoding utf8"
[Scilab6] pscmd="get-content -Path
"""C:\Users\dc227480\Documents\temp\Données IAQ SENSE 29_01_2016 10_45_00
1.dat.csv""" | out-file """C:\Users\dc227480\Documents\temp\Données IAQ
SENSE 29_01_2016 10_45_00 1.UTF-8.csv""" -encoding utf8"
[Scilab6] prompt : 1.29 - 1.30 : syntax error, unexpected identifier,
expecting end of file

scilab6 prompt indicates error detected after the third double quote:
pscmd="get-content -Path """



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[Scilab-users] support on scilab 6 new debug feature

[David Chèze]

Hi all,

I'm looking after documentation in any format regarding the new debug
feature introduced in scilab 6. Especially trying to debug a module under
development, I'm sure they are some tricks to avoid traps I'm presently
falling in...

Thanks for any link to put me on track !

David



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[Scilab-users] multiple element by element between large matrix and vector

[David Chèze]

Hi all,

I was wondering what are the possibilities to do a product element by
element between a matrix A (m rows ,n columns)and a vector (let say column
vector v (m elements) ): I want each element of each column of A to be
multiplied by each element of v at the same row. What I'm using for now is a
product by a diagonal matrix based on v. For large matrix in data
manipulation (typ. 10 rows), it's necessary to use sparse to allocate
better the diag matrix otherwise it's out of memory for usual machine.
So i'm using --> diag(sparse(v)) * A

Have you best practise to share on this topic ?

Thank you all,

David




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Re: [Scilab-users] frequency analysis of N variables

[David Chèze]

Hi Serge,

thanks it performs what I expect! I wonder whether this function will be
included in the next release of Scilab since it could be useful for lots of
people as a general use case, not only dedicated to image processing. It
might be also extended to N dimensions : should I add a ticket in the
wishlist ?

Thanks,

David



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Re: [Scilab-users] robust boxplot within scilab

[David Chèze]

Hi Mehran,

actually it's the two modules I've already evaluated on this topic.  My test
case is a set of 83 series of 52 samples as 52x83 matrix, not normalized, i
want to have an outlook of this data.
Both NAN and CASCI failed to produce comprehensive plot.
I'm running stixbox (statpack) as a basis for statistic module therefore NAN
or CASCI might be confused if some functions have the same name.
Looking into boxplot.sci from CASCI (I've not installed the whole
module),this is the case of the quantile function.
It was not my aim but I'll try to adapt it just for boxplot feature.

David




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[Scilab-users] robust boxplot within scilab

[David Chèze]

Hi all,
I'm wondering whether you already find scilab ressource for drawing boxplot
on statistical data sets? I've tested some functions from different
ressources but either not running properly or not robust plotting in scilab
5.5.
Thanks for your feedback if any.

David




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Re: [Scilab-users] polyfit for Scilab

[David Chèze]

Hi,

 you could use the polyfit function that is made available in the stixbox
module: it is equivalent to matlab's polyfit.
http://atoms.scilab.org/toolboxes/stixbox/2.2/

David



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Re: [Scilab-users] Writing reading sod file from another software (Labview)

[David Chèze]

Hi Antoine,
I've never used it until now but there's a gateway Scilab/Labview that
should do it easily:
https://www.scilab.org/fr/scilab/interoperability/connection_applications/labview


David



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[Scilab-users] scinotes command line option to handle different encoding

[David Chèze]

Hello,

I come into troubles while importing text files with UTF16 litlle endian
original encoding formats that is not managed by mgetl : workaround used
until now is to manually change the encoding using anotyher editor
notepadd++. it would be nice to be able to do that directly through an
option  from the command line call to scinotes, like the feature introduced
with 'trail', indent, quote option.

Does any of you have a more efficient way of doing that ?

Thanks,

David 



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Re: [Scilab-users] text file reading with fixed width field separated by space character

[David Chèze]

Hi Samuel,

thanks for this solution that performs really well : I had concerns using
this function fscanfmat because i thought it was more or less the same core
code as csvRead with less optional features but it seems to be different
code for each.
In the end for the time being fscanfmat is the function for reading matrix
from text file with space/tab as separator, and it also handle the case with
header lines in the begining of a file which is my current case.
Thanks again.

David



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Re: [Scilab-users] non access to sci files

[David Chèze]

Hi Paul,

did you already have a look at:
http://atoms.scilab.org/toolboxes/scilab2c
http://atoms.scilab.org/toolboxes/scilab2c  
I've never used this module and i assume there are some limitations but it's
worth giving a try...

David




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Re: [Scilab-users] Format legends of a graph as a 2D table

[David Chèze]

Hi Rafael,

I may have misunderstood your request however as far i know you could use
out_upper_right in the legend() options to draw out of the plotting area.

see  help http://help.scilab.org/docs/5.4.0/fr_FR/legend_properties.html  

David




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Re: [Scilab-users] large csv text file management issue

[David Chèze]

hi all,
some feedback from test on big text files:
I can't use sed to split files since I've only a windows7-32bit machine...
I tried the hex editor (HxD) which works fine for splitting big file quite
easily.
On my W7-32bits scilab 5.4.1 machine, the max limit (stacksize(max)) for
reading text file is between 100Mo and 200Mo.

--Finally i succeeded to read directly (around 5 min) the 900Mo text file
using csvRead call on another machine WINXP-64bits scilab 5.4.0: great !
conclusion : move to 64bit definetely...


Thank you all.

David



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