Another KeyError Issue -- GSSI StructureScan Mini

[thekodiak13]

Hey! Having some KeyError issues with my GSSI StructureScan Mini DZT files. It seems to be the same type of errors from #11 and #7. I tried installing from source and it didn't help.

Here are my DZT files if you need them:
SSMini_DZT_Files.zip

Excited to continue playing with this tool. Appreciate your work!

Thanks!

[iannesbitt]

Hi @thekodiak13, thanks for attaching the code and the data, it makes my job easy! I think this should be fixed in de764db. Can you check?

[iannesbitt]

Working for me:

[thekodiak13]

Perfect! Working on my end as well. I really appreciate it! Great work with this project!

[iannesbitt]

Hi @thekodiak13, I got an email that you responded with the following, although I don't see it in this thread (maybe you deleted?). I will respond anyway for completeness.

Maybe not the appropriate place to ask, but is there any way to plot the DZT file with the X-axis labeling the distance scanned, and the Y-axis labeling the depth scanned?

Something like how the plot is displayed on the actual device:

No biggie if not. The plots I'm able to generate currently are already great!

Yes! Right now it's only possible to plot distances in metric but it works. Try something like:

readgssi -x cm -z cm -d 161 -p 5 -i File____009.DZT

[iannesbitt]

It looks like readgssi can't read these files' DMI wheel information correctly (#14) but I think you can get around that by specifying the correct samples per meter value with -d 161 (back of the napkin calculations say sampling rate is ~161 traces per meter).

Out of curiosity, do you specify a samples per length value in the SS Mini? If so what was it for these files?

[thekodiak13]

Hey @iannesbitt! Yes! I did delete because I continued playing with it and figured it out. Probably a good idea to leave it up in case others have the same question.

The samples per length was whatever the default value is. I should be able to get that information for you later today hopefully.

[iannesbitt]

Awesome. GSSI is somewhat tight-lipped on this stuff so any chance I get to test other kinds of files typically causes some strange error that ends up benefitting the program's functionality in the end. Much appreciated!

[thekodiak13]

Not sure if this is what you're looking for, but here are some of the settings I used:

Scan Density: Normal (4 scans/cm)
Dielectric: 8.0
Depth: 16in

[iannesbitt]

Ah. 4 scans per cm is actually what it read from the file (393.7 scans per meter). So it looks like I was wrong and the software was right, and you don't need to use the -d flag after all. My brain must have been fried last night I guess. Thanks for chasing this down anyway.

[thekodiak13]

Ha it's all good man. If you need more info on the SS Mini, let me know. I'm still learning how to use it as well.