| T O P I C R E V I E W |
| Dr.Klein |
Posted - 03/17/2004 : 6:15:53 PM
Hello everybody !
Could it be that it is not possible to create a matrix with OriginC without using a template ?
When you replace
mat1.Create("origin");
in this sample code from the help-files:
void fillMatrix()
{
MatrixPage mat1;
mat1.Create("origin");
mat1.Rename("myMatrix");
Matrix <double> aa;
BOOL bRet = aa.Attach("myMatrix");
UINT rows = aa.GetNumRows();
UINT cols = aa.GetNumCols();
printf("rows = %d\t cols = %d\n", rows, cols);
for (int ii = 0; ii<rows; ii++)
for (int jj = 0; jj<cols; jj++)
{
aa[ii][jj]= sin (ii) + cos (jj);
}
}
by
mat1.Create();
the created 10x6 matrix is empty.
I don't want to create a different template all the time.I know the number of rows and columns of the Matrix I want to create.
And the cells of the matrix should be filled with the values of a dataset, like:
aa[i][j]=ds[j+nCols*i]; //aa is the matrix, ds the dataset, nCols
// the number of columns
Is it possible to modify the example above for this ?
Thank you
Oliver |
| 3 L A T E S T R E P L I E S (Newest First) |
| Mike Buess |
Posted - 08/21/2006 : 08:00:27 AM
Hi Brad,
Declare pat as Matrix rather than matrix...
Matrix pat("pattMatrix");
pat.SetSize(XRANGE,YRANGE);
Mike Buess
Origin WebRing Member |
| btink |
Posted - 08/20/2006 : 2:09:59 PM
Hello.
I am having a problem inputting data from a loop into a matrix. Once I have successfully created the matrix I will need to make a contour plot; I like to automate this as well using origin C.
I am able to compile and run my program. The worksheets are all created and labeled correctly, but the matrix that is created remains empty. I am not sure that I am yet clear on the distinctions between matrix objects,layers, etc.
For simplicity I have only included part of the program. The vectors (Vf,Vk,Vy,xp,yp)in the loop, as well as nrows, are defined earlier. I can send the rest of the program and the input file if necessary.
kind regards, Brad
#define XRANGE 20
#define YRANGE 100
MatrixPage mat1; // Define MatrixPage (for labeling purposes?)
mat1.Create("origin"); // Create MatrixPage
mat1.Rename("pattMatrix"); //label MatrixPage
double mod;
int i,j,k;
matrix <double> pat(XRANGE,YRANGE); // Define Matrix
// BOOL bRet = pat.Attach("pattMatrix"); // this line produces error ?
for (i = 0; i < XRANGE; i++) // perform calculation
{
for (j = 0; j < YRANGE; j++)
{
for (k = 0; k < nrows; k++)
{
mod = Vf[k]*Vf[k];
pat[i][j] = mod*(cos(2*PI*(Vh[k]*xp[i]+Vk[k]*yp[j])));
}
}
}
}
|
| cpyang |
Posted - 03/17/2004 : 6:33:38 PM
You will need to specify a template, but can just always use "Origin" which is the default tempalte. After create, you can call SetSize to set the rows and cols.
Currently, if you create a matrix page without a template, the created MatrixLayer has no MatrixObject and you will need to Add a new matrix object, but the command to add MatrixObject is not yet implemented in our current released versions.
CP
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