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help > RE: Big Connectivity Matrices
Dec 4, 2021 12:12 AM | Andrew Zalesky
RE: Big Connectivity Matrices
Hi Quishi,
this error is not due to any size limit. However, 4095 x 4095 matrices will take a long time to process.
The error is most likely caused by an issue in reading in one or more of the matrices. Have you checked to ensure that some of the matrices don't include missing values, complex values, NaNs, additional lines, etc. Are all the matrices exactly 4095 rows and columns?
As a check, you could try using smaller matrices to see if they can be read in correctly.
best,
Andrew
Originally posted by Qiushi Wang:
this error is not due to any size limit. However, 4095 x 4095 matrices will take a long time to process.
The error is most likely caused by an issue in reading in one or more of the matrices. Have you checked to ensure that some of the matrices don't include missing values, complex values, NaNs, additional lines, etc. Are all the matrices exactly 4095 rows and columns?
As a check, you could try using smaller matrices to see if they can be read in correctly.
best,
Andrew
Originally posted by Qiushi Wang:
Hi Andrew and everyone,
I used NBS to conduct continuous variable analysis on 282 subjects, and each connectivity matrix was 4095*4095 in size. I stored the connectivity matrix of all subjects in a common folder in ".txt " format. In the "Connectivity Matrices " box, I enter a subject's ". txt" format connectivity matrix. After filling in all the necessary inputs, I click the "NBS" button.
A few minutes later, the following message appears in the bottom box: "Stop: Connectivity Matrices not found or inconsistent". Does this prompt occur because the input connectivity matrices exceed the size limit? (the total size of matrices for all subjects is 4095*4095*282). If so, how can I solve the problem? Or some other reason for the prompt? Hope to get your help. Thank you very much.
Best wishes
Qiushi
I used NBS to conduct continuous variable analysis on 282 subjects, and each connectivity matrix was 4095*4095 in size. I stored the connectivity matrix of all subjects in a common folder in ".txt " format. In the "Connectivity Matrices " box, I enter a subject's ". txt" format connectivity matrix. After filling in all the necessary inputs, I click the "NBS" button.
A few minutes later, the following message appears in the bottom box: "Stop: Connectivity Matrices not found or inconsistent". Does this prompt occur because the input connectivity matrices exceed the size limit? (the total size of matrices for all subjects is 4095*4095*282). If so, how can I solve the problem? Or some other reason for the prompt? Hope to get your help. Thank you very much.
Best wishes
Qiushi
Threaded View
| Title | Author | Date |
|---|---|---|
| Qiushi Wang | Dec 3, 2021 | |
| Andrew Zalesky | Dec 4, 2021 | |
| Qiushi Wang | Dec 4, 2021 | |