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Question:Calibration of spectra fails

Paul_P is asking a question about spectral-workbench: Subscribe to answer questions on this topic

Paul_P asked on November 29, 2016 08:57
234 | 4 answers | shortlink

What I want to do or know

I am trying to calibrate my first CFL spectrum taken with the public labs smartphone spectrometer. The save fails with a permanent spinning wheel on the save button and a "Tag you've applied couldn't be saved" warning. See the attached screenshot and link to the spectra.

Background story

I am using a MacOS Sierra v10.12 and Google Chrome Version 54.0.2840.98 (64-bit). The same issue occurs if I use Safari.

I would be really grateful for some help on what I am doing wrong.

Thanks in advance

Paul

question:spectral-workbench

1 Comments

Paul_P 10 months ago

Missed out the link https://spectralworkbench.org/spectrums/92420

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4 Answers

warren 10 months ago

Hi, this looks like a bug -- I've opened a new bug report here: https://github.com/publiclab/spectral-workbench/issues/386

I saw an error while forking it, and -- I think it's related to the issue you're seeing.

It's odd - i think there's another bug causing this, but although I saw the same error message as you when I calibrated the fork I made, when I reloaded that page, it had in fact saved:

https://spectralworkbench.org/spectrums/92538

For the time being you can use that as a calibration source!

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xose 10 months ago

Same happend to me and when reloaded, both messages (the need of calibration and the "Tag you've applied couldn't be saved") dissapeared and looks like It's saved https://spectralworkbench.org/spectrums/92562

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Javi 7 months ago

I've the same problem as described above by Paul. Running in Firefox browser and unable to calibrate a spectrograph.

Regards, and thanks in advance, Javi.

warren 7 months ago

Hi, can you link us to your spectrum so we can try it out?

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Javi 7 months ago
warren 7 months ago

Hi, did you also see "Tag you've applied couldn't be saved"?

warren 7 months ago

Hi, Javi - i think one issue is that your image is really large... i wonder if you uploaded a cropped version of just the spectrum part of the image, just to see if that works, we'd learn something?

warren 7 months ago

Although actually now that I look, it's only 500k, so I guess I was wrong about that. Trying to re-upload myself now.

warren 7 months ago

OK, so it's not that it's too large a file size, but it's over 4000 pixels wide, so I think it's longer than the available storage per record in the database. I think cropping should work, though!

Javi 7 months ago

Yes, always see the warning about the tags. :(

The image is unprocessed, as taken from the camera. I'll try with lower image resolutions. I wonder --in my ignorance-- that if I crop the image how can I use the calibration in other spectographs, since will not have the same frame reference.

Thank you very much! :) Javi.

Javi 7 months ago

Tested a scaled version of the image: 2000 pixels wide: https://spectralworkbench.org/spectrums/100017 (fail again). 1000 pixels wide: https://spectralworkbench.org/spectrums/100019 (finally works!!)

Thanks! Javi.

warren 7 months ago

Ah, so glad it worked. Yes, it's a lot of data for the database to handle per spectrum!

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