Ledalab: File import problem

Hey,

I had an excel file (.csv) format to which I converted to (.mat) format for EDA analysis, But now when I try to import the .mat file in the Ledalab, it shows the message "UNABLE TO IMPORT 'file path' filename.mat". Is there any additional configuration we need to do?.... Any suggestions?

Answer 1

[Walter Roberson]

The .mat file must be in a specific format. It must contain a single variable named data that is a struct. The struct must have fields named conductance, time, timeoff, and event . event must be a struct array with fields time, nid, name, userdata . time and nid are numeric; the name fields are character vectors, the userdata fields can be []

[Hadeel Haj Ali]

Hi @Walter Roberson

I have a short follow-up question regarding text file stucture. I have multiple events in my GSR experiment and the durations of events are different. How do I indicate the onset and duration of each event in the raw data file?

Your help is greatly appreciated.

Best regards

Hadeel

[Walter Roberson]

Ledalabs does not have any explicit storage of duration or end-time of an event. The closest is that you can have multiple entries with the same event number ("nid") and that would imply continuity of the event.

In text files, event numbers are optional, which implies to me that Ledalabs expects events to generally be impulses.

[Hadeel Haj Ali]

@Walter Roberson

Thank you for the clarification.

To indicate a continuous event, I entered a specific number multiple times for a specific event. However, this approach has made it difficult to see the data, as the event markers now appear to span the entire dataset.It sounds like I'm having trouble visualizing the data after importing a text file that includes SCR responses and event markers.

I'm wondering if there is a better way to indicate continuous events. Most events are continuous and last several seconds, and we ultimately want to compare the responses to these events to a baseline.

[Walter Roberson]

Sorry I have no experience with that program. When the question was asked originally I just looked in the source code. I have never run that kind of program myself