Sequential data reading and subsequent saving in CSV file

[kunalpal]

Dear Dr. Rouge,

Thanks you for your suggestion. We have already implemented the program in MATLAB and are successfully driving the LED display after signal classification using time domain and joint time-frequency domain features. We are looking forward to device biosignal controlled rehab aids in near future. We were just eager to know whether the program can be implemented in LabVIEW, which will make it more user friendly and the students can understand the same in a more lucid manner.

If NI helps in this regard to develop the program in Labview that will be great else we don't mind, at least in this case.

Thanks again for your suggestions.

KP

[ZJ.Gu]

Hi KP,

I think the error description has already telled you information. It seems the input data is empty. You could add some probe or indicator in some intermediate nodes/wires to see why the signal is empty. If you could like to know more about LabVIEW debugging, you could find a chapter named "Running and Debugging VIs" in LabVIEW Help.

Thanks!

ZJ Gu

[kunalpal]

Hi ZJ,

Thanks for your reply. The program was running correctly when it was not runing in the loop. But as it was put in the loop, it showed the error. Anyways, we have figured out an alternative way to run the program using the same codes with simultaneous calling of all the files.

If you can let me know the source where I can find literatures on saving the various statistical features (express VI) in parallel columns in a xls file.

Thanks,

KP

[ZJ.Gu]

Hi KP,

I suggest you could look into the function you are now using - Write To Spreadsheet File (DBL).vi. It could not only accept 1D array, but also for 2D array. You could create a 2D array in which row and column are used for your specific purpose,  for example,  each row represents one file in you case, and each column represents one feature, then write the 2D array to excel file.

Does this help?

Thanks!

ZJ Gu