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seamus.holden
UK
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 Posted - 08/07/2006 : 07:29:11 AM
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Origin Version (Select Help-->About Origin): 7.0
Operating System: XP Pro
I have been writing programs to automate some image analysis I need to do. This is just a minor problem but it it a bit annoying.
When I import an image for analysis, the matrix defaults to integer data type and the only way I can find to convert it to double (as required for the analysis programs) is manually, rather than using my C routine or a LabTalk script.
I cant seem to get the "matrix.CastToDouble(matrix1)" command to work in C, and if I use LabTalk (off topic sorry) "set %c -it 0" it deletes the data from the matrix.
Any ideas?
Thanks
Seamus Holden |
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Mike Buess
USA
3037 Posts |
Posted - 08/07/2006 : 08:31:30 AM
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Hi Seamus,
This works...
MatrixLayer mlay = Project.ActiveLayer();
if( mlay )
mlay.SetInternalData(FSI_DOUBLE);
Mike Buess
Origin WebRing Member |
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seamus.holden
UK
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Posted - 08/07/2006 : 08:47:20 AM
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Thanks, that worked like a charm.
Seamus Holden |
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seamus.holden
UK
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Posted - 08/07/2006 : 08:56:30 AM
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| Actually, I may have been a bit hasty. It looked as if it ran on first go but now it appears that this is not the case. I get a unknown runtime error after the .SetInternalData command executes :( |
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Mike Buess
USA
3037 Posts |
Posted - 08/07/2006 : 09:05:26 AM
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I get no error in 7.0 SR4. Perhaps you should apply the SR4 patch.
Mike Buess
Origin WebRing Member
Edited by - Mike Buess on 08/07/2006 09:51:37 AM |
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seamus.holden
UK
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Posted - 08/07/2006 : 10:13:07 AM
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just checked im actually on 7.5 SR6, not 7.0, apologies.
The input matrix is a 1024x1024 matrix, data is unsigned ints approimately 10E4.8.
This is the relevant bit of code, after which the program terminates with "unknown" runtime error:
// Assumes Matrix1 is active window in Origin
int ii, jj;
double value;
Matrix<double> image; // Declare Matrix object
MatrixLayer ml; // Declare MatrixLayer object
ml = (MatrixLayer) Project.ActiveLayer(); // Get active MatrixLayer from Project object
if ( ml )
ml.SetInternalData(FSI_DOUBLE);
image.Attach(ml); // Attach object to Matrix1
Thanks
Seamus Holden
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easwar
USA
1965 Posts |
Posted - 08/07/2006 : 10:41:29 AM
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Hi Seamus,
Tried with a 2000x2000 matrix in 7.5SR6 and could not reproduce the problem - with your code could switch fine to double and manipulate the data.
Is there a system resources problem at your end? Can you try with a much smaller image, or just make a matrix say 100x100 and set it to int(4) and then try your code?
Easwar
OriginLab
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Mike Buess
USA
3037 Posts |
Posted - 08/07/2006 : 10:45:20 AM
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I still get no runtime error with that snippet of code. This is how I tested in 7.5 SR6...
1. Create matrix with New Matrix button.
2. Matrix > Set Dimensions: 1024 cols x 1024 rows.
3. Matrix > Set Values: Cell(i,j) = i*j.
4. Matrix > Set Properties: int(4), unsigned.
5. Run this function from script window...
void run_mtest()
{
int ii, jj;
double value;
Matrix<double> image; // Declare Matrix object
MatrixLayer ml; // Declare MatrixLayer object
ml = (MatrixLayer) Project.ActiveLayer(); // Get active MatrixLayer from Project object
if ( ml )
ml.SetInternalData(FSI_DOUBLE);
image.Attach(ml); // Attach object to Matrix1
}
Result: internal data type changed to double with no runtime error.
Mike Buess
Origin WebRing Member |
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seamus.holden
UK
Posts |
Posted - 08/07/2006 : 11:22:57 AM
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Very strange.
When I first implemented the code, I got "unknown runtime error".
After restarting Origin (which I should have tried, to be honest), my code also now runs ok. Not sure the cause of the difference, but it works now.
Thanks for the help
Seamus Holden |
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seamus.holden
UK
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Posted - 08/07/2006 : 11:43:42 AM
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Very strange.
When I first implemented the code, I got "unknown runtime error".
After restarting Origin (which I should have tried, to be honest), my code also now runs ok. Not sure the cause of the difference, but it works now.
Thanks for the help
Seamus Holden |
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Topic |
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Change matrix internal data type