[Scilab-users] How to link a static library
Hello, I'm building a toolbox where I have to link a static library (.a file). I'm able to build the toolbox using *exec builder.sce*. I have the following line in the .start file *link(lib_path + "/liboctave.a");* When I load the toolbox using *exec loader.sce*, I get the error *link: The shared archive was not loaded: liboctave.a: invalid ELF header* If I change it to* link(lib_path + "/liboctave");*, I get the error *: cannot open shared object file: No such file or directory* How do I use link() to link a static library in the .start file? Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Atoms login
Hello, Is anyone having trouble logging into their ATOMS account? I'm unable to log in or create a new account. Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Difference between pvApiCtx and scilabEnv
Hello, I'm using Scilab 6.0.0 API. What is the difference between pvApiCtx and scilabEnv? When I compile C++ code on Scilab 6.0.0 using pvApiCtx, I get the following error- error: 'pvApiCtx' was not declared in this scope int z=nbInputArgument(pvApiCtx); ^ /home/scilab-6.0.0/share/scilab/../../include/scilab/api_stack_common.h:64:53: note: in definition of macro 'nbInputArgument' #define nbInputArgument(PVCTX) (*getNbInputArgument(PVCTX)) If I replace pvApiCtx with scilabEnv, I get the following error- /home/scilab-6.0.0/share/scilab/../../include/scilab/api_stack_common.h:64:58: error: expected primary-expression before ')' token #define nbInputArgument(PVCTX) (*getNbInputArgument(PVCTX)) How do I resolve this error for Scilab 6.0.0? Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Convert struct to mlist/tlist
Hello,
I'm using Scilab 5.5.0. How do I convert a struct to an mlit/tlist in
Scilab code?
For example, I have created a struct using date_st=struct('day',25,'month'
,'DEC','year',2006)
Is there any way to get the number of fields in the struct so that I can
loop over the struct? I want to do this operation for a struct with unknown
number of fields and values.
Regards,
Shamika
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[Scilab-users] Scilab error
Hello, I use Scilab 5.5.0 on Ubuntu 14.04, 64 bit architecture. I installed Scilab using apt-get. I updated Ubuntu yesterday and since then I'm unable to start Scilab. I get the error 'Segmentation fault (core dumped)'. The same error occurs on Scilab 5.5.2 and Scilab 6.0 for scilab and scilab-adv-cli mode. Only scilab-cli seems to be working. As we require graphics features of Scilab, is there any solution to this problem? Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] varargout doubt
Hello,
I have a function defined as such
function varargout= callOct(fname,varargin)
varargout=list(callOctave(fname,varargin))
endfunction
When I call this function with [c,d]=callOct("butter",8,0.1), I get the
error
!--error 21
Invalid index.
If I call the function as c=callOct("butter",8,0.1), I get no error.
varargout stores only one o/p argument even though callOctave returns two
arguments.
If I remove varargout like this
function [b,a]=callOct(fname,varargin)
[b,a]=callOctave(fname,varargin)
endfunction
Now when I call this function with [c,d]=callOct("butter",8,0.1), I get no
error.
I need callOct function to work with any number of output arguments and so
I need to use varargout. How do I get the function to work with varargout?
Regards,
Shamika
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[Scilab-users] Building macros
Hello, I'm developing a toolbox in Scilab 5.5.0. I'm trying to build the macros in a toolbox using tbx_build_macros function. The macros folder has around 220 .sci functions. When I build the toolbox, only 128 functions are built automatically. The toolbox build stops here. There are many cpp functions in sci_gateway folder. These cpp functions are not compiled at all. There are no errors in the remaining .sci or cpp functions. Is there a limit to the number of functions that can be built using tbx_build_macros? Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] API Error
Hello,
I'm using Scilab 5.5.0 API in c++ code. I have the following code-
sciErr = getVarAddressFromPosition(pvApiCtx, 1, );
if(sciErr.iErr)
{
printError(, 0);
return 0
}
sciErr = getListItemNumber(pvApiCtx, piAddr, );
if(sciErr.iErr)
{
printError(, 0);
sciprint("This variable is not a list");
return 0;
}
for( a= 1 ;a<=noItemList ; a++)
{
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, a, , ,
);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
}
This is part of a larger function. For the function call d=callOct(c),where
c is an mlist (3D matrix), I get the error
API Error:
in getMatrixOfDoubleInList: Unable to get address of item #2 in
argument #1
in getMatrixOfDouble: Invalid argument type, double matrix expected
What am I doing wrong?
Shamika
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[Scilab-users] Video Player in Scilab
Hello, We are building a computer vision toolbox which requires developing a video player. We developed imshow using Matplot and then looped imshow over the number of frames in the video to play the video. This method makes the video player very slow. Is there any other way to play a video in Scilab using any scripting tool/ GUI developer? Any leads would be appreciated. Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Creating hypermatrix
Hello, Is it possible to create a hypermatrix of type double/int/sparse directly from C/C++ code? Right now I'm using lists to send back the hypermatrix from C++ code to Scilab. This is a bit tedious as I have to convert the list into a hypermatrix in Scilab for further calculations. Regards, Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] List API function error
I'm using Scilab API list function to access 2D/3D matrices from Scilab
environment in the C++ code. This list is then converted into a Mat object
and passed to OpenCV.
I'm having trouble accessing the child elements of the list.
int retrieveImage(Mat ,int pos)
{
SciErr sciErr;
int iRows=0,iCols=0,i,j,k=0;
int *piAddr = NULL;
int *piAddrChild = NULL;
int iPrec = 0,iItem = 0;
//retrieving number of items in the list and type of data(integer/float)
sciErr = getVarAddressFromPosition(pvApiCtx,pos,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
sciErr = getListItemAddress(pvApiCtx,piAddr,1,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
sciErr = getListItemNumber(pvApiCtx,piAddr,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
if(isIntegerType(pvApiCtx, piAddrChild))
{
// Retrieve 2D/3D matrices of int type
}
else //for floating point/ double precision values
{
if(iItem==3)
{
double *pstDataR = NULL;
double *pstDataG = NULL;
double *pstDataB = NULL;
sciErr = getVarAddressFromPosition(pvApiCtx,pos,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//retrive the matrix of the R values
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, 1, ,
, );
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//retrive address of the list
sciErr = getVarAddressFromPosition(pvApiCtx,pos,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//retrive the matrix of the G values
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, 2, ,
, );
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//retrive address of the list
sciErr = getVarAddressFromPosition(pvApiCtx,pos,);
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//retrive the matrix of the B values
sciErr = getMatrixOfDoubleInList(pvApiCtx, piAddr, 3, ,
, );
if(sciErr.iErr)
{
printError(, 0);
return 0;
}
//creating an image matrix with the no. of rows and columns we
retrieved, and assigning it to be of the form 8-bit unsinged integers
image = Mat(iRows,iCols,CV_64FC3);
//Now that we have the 3 matrices(R,G,B), we need to assign
those values to the pixels. The following code does this
k=0;
for(i=0;i
[Scilab-users] Set axes limit for plot
How do I set the minimum and maximum values for the axes in a plot? When I use the plot command as plot(x1,y1,x2,y2) I get the plot where x axis is from 0 to 100 and y axis is from -20 to 120. How do I set the axis from 25 to 100 for both x and y axes? Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Sparse Boolean Matrix
I'm having trouble using Sparse Boolean Matrix API function in C++ code. While I can get the row and column indices of the non zero elements in the matrix, I don't see a pointer for the actual boolean values in the matrix. I have to assign the boolean values to another matrix. How do I access the boolean values in the sparse matrix? Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Struct and Cell Array API function
Hi, I posted this query on Scilab developer's mailing list but I got no reply. I'm trying my luck here. I'm using Scilab API in C++ code. I have to return struct and cell array values to Scilab environment. As there are no Scilab API functions for struct and cell array data types, is there any way to do it? If I do have to write API functions, would list/mlist be the best way to deal with structs and cell arrays? Shamika ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
