Support Public Lab Today! For the last twelve years, Public Lab has hosted SpectralWorkbench.org so that people everywhere can calibrate and analyze their spectra. Unfortunately, current circumstances have led us to scale back and take certain services offline. SpectralWorkbench.org will go offline as of August 15, 2022. The SpectralWorkbench platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for SpectralWorkbench are approximately $1000 per month. We are doing our best to sustain programming and support for our community, and we need your help. Thank you for being part of our community. We can't wait to be back online with you. Support Public Lab by making a donation today. ###What is Spectral Workbench? [SpectralWorkbench.org](https://spectralworkbench.org) is a web based application to collect, archive, share, and analyze spectral data, for Public Lab [DIY spectrometers](/wiki/spectrometer) and other spectrometers. With it, you can: * connect your USB [Desktop Spectrometry Kit](/wiki/desktop-spectrometry-kit-3-0) * scan and save samples * wavelength calibrate your spectrometer * plot light intensity as a function of wavelength (average digital consumer cameras have a range of 400 to 700 nm) * create sets of multiple spectra to visually compare and analyze scans * download CSV data for offline analysis * view others' data and discuss * find similar data in [a database of over 60k spectra](https://spectralworkbench.org/stats) No download is required -- just a web connection. The Chrome browser works best, but most standard-compliant browsers are supported. It is possible to use from an Android smartphone, preferably with the Firefox browser which allows you to specify which camera to look through. **** ###Contents * [Learn to use the software](/wiki/spectral-workbench-usage) * Learn about the [available tools](/wiki/spectral-workbench-tools) * Learn about [Calibration](/wiki/spectral-workbench-calibration) * Learn about the [Snapshots system](/wiki/spectral-workbench-snapshots) * Learn about the [Operations system](/wiki/spectral-workbench-operations) * [Spectrometry in general](/wiki/spectrometer) * [Applications & uses](/wiki/spectral-analysis) * [Construction](/wiki/spectrometer-construction) * [Desktop Spectrometry Kit](/wiki/desktop-spectrometry-kit-3-0) * [Foldable Mini-Spectrometer](/wiki/foldable-spec) * [Troubleshooting](/wiki/spectral-workbench-help) * [API Docs](/wiki/spectral-workbench-api) **** ###Intro video ## Browsers Spectral Workbench should work on Chrome (in Windows/Mac/Linux/Android, but not iOS), Firefox (Windows/Mac/Linux/Android), or Opera (Android). It may work on other browsers and we are working on expanding coverage; read more on this page: https://github.com/publiclab/spectral-workbench.js/issues/87 **** ## Development Do you code? The codebase of Spectral Workbench is available at https://github.com/publiclab/spectral-workbench. The server is written in Ruby on Rails, with a lot of client side code in JavaScript. You can read about [the JavaScript API here](/wiki/spectral-workbench-api). We really need more developers, so if you are interested, please get involved! A great place to start is the "plots-dev" mailing list for software developers: http://publiclab.org/wiki/developers **** ## FAQ We're collecting and working our way through a range of questions about Spectral Workbench -- if you can contribute your own questions, or answer others', please do! [questions:spectral-workbench] **** ## Troubleshooting If you feel you've encountered a bug with the software -- very possible! Please look through existing issues listed here, file a new one if you don't see something similar, and help to add any observations to existing issues shown here. Thanks for helping improve this open source software! [questions:spectral-workbench-issues] ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stoft | "Ok, visualizing the spectra helps. 1 - The calibration (wavelength calibration using a CFL source) does not require an amplitude change (though SWB..." | Read more » | over 6 years ago | |||
| troyb | "Also, I didn't save any spectra with saturated channels that I recall, but the recent spectrum https://spectralworkbench.org/spectrums/137643 illus..." | Read more » | over 6 years ago | |||
| troyb | "Ah, the table makes the values hard to see. Note for instance that a raw value of 10 scales to 7.65 while a raw values of 23, 24 and 25 scales to 2..." | Read more » | over 6 years ago | |||
| stoft | "Could not find the actual spectra from the info provided. How about an explicit link or post the graphic? " | Read more » | over 6 years ago | |||
| SarahC | "Thanks icarito! xx " | Read more » | over 6 years ago | |||
| silvi_ap51 | "Hi, thanks a lot for your concern, i hope we can work with this site as soon as possible :) " | Read more » | over 6 years ago | |||
| icarito | "Hi, I've reloaded the database data into a new container. I'll keep an eye on it and have enabled logging for slow queries. It may be that the data..." | Read more » | over 6 years ago | |||
| icarito | "Hi, in fact the database was failing so I'm re-creating it and moving it into a new container. Currently the site is down, expecting to be back in ..." | Read more » | over 6 years ago | |||
| icarito | "Hi, I'm the sysadmin for Publiclab and I'm looking thru the issue which is affecting our database. I will update you as soon as I have a definitive..." | Read more » | over 6 years ago | |||
| KIAS | "I am also having difficulty to load the main page, capture spectrum and also to save the data. It takes too long to log in as well. I am having th..." | Read more » | over 6 years ago | |||
| silvi_ap51 | "ohh, I see, and 2 days ago i can work with it without any problem and use other browser (opera, not chrome). but since yesterday it happened again..." | Read more » | over 6 years ago | |||
| SarahC | "It's slow again today - 2 minutes and the "capture" page is yet to appear, all the other sites in Chrome refresh fine. " | Read more » | over 6 years ago | |||
| warren | "Hi, silvi_ap51 - sorry you're having trouble -- we had some server slowness that may have caused this. @icarito has been working on it. Can you try..." | Read more » | over 6 years ago | |||
| warren | "Hi, I believe you should be able to rotate the picture after uploading, but there should also be a "vertical" checkbox you can check or uncheck -- ..." | Read more » | over 6 years ago | |||
| omarormachea | "Dear @TeacherHelen, you can use the following free software created for android platforms, you can get information about it, from the calibration a..." | Read more » | over 6 years ago | |||
| Bronwen | "Hi @TeacherHelen, nice to meet you! The Papercraft Spectrometer wiki is a good place to start. There you will find links to instructions for calibr..." | Read more » | over 6 years ago | |||
| quencher | "Hi Warren, we're testing the flow of multiple fluids using dye solutions. We're total amateurs. Any ideas or references you could point us at? Char..." | Read more » | almost 7 years ago | |||
| warren | "Cool! what are you interested in doing with it? I'm the lead developer, very happy to work with you! " | Read more » | almost 7 years ago | |||
| quencher | "Thank you, that's exactly what I need! " | Read more » | almost 7 years ago | |||
| warren | "Hi! We're on v2.1.x -- we haven't released a new version but the latest main branch here is what's running on SpectralWorkbench.org: https://githu..." | Read more » | almost 7 years ago | |||
| warren | "Good luck! And please do post it as an activity once you do - folks would love to see this step by step with some photos and such! " | Read more » | almost 7 years ago | |||
| Flameytail | "i have not done the experement yet- but a detailed pre writen procedure is due on december 1st tommorow " | Read more » | almost 7 years ago | |||
| warren | "This looks very cool! Have you taken photos of these steps, or might you? We would love to feature this as an activity if you can illustrate at lea..." | Read more » | almost 7 years ago | |||
| warren | "Hi, I was able to re-calibrate it and got something that looks all right: https://spectralworkbench.org/spectrums/112148 How's that? " | Read more » | about 7 years ago |