I’m glad to hear you’re working with GPS serial data. I’m planning on writing an example python high level analyzer (HLA) to help decode the strings in the app.
Right now, there is an example python HLA that helps show serial text data in the timeline view. This is what it looks like with your capure:
You can get that HLA here: https://github.com/saleae/logic2-extensions It’s part of the “hla_simple_example” package, called “Text Messages”. It’s very simple and lets you select a delimiter character and/or timeout, and simply joins the text characters together to form strings. It provides a better graph overlay experience for serial data than the standard serial analyzer, as you can see in the screenshot.