| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "That's right! We thought 0-100 would be more familiar to people, but the original values are preserved in the raw data. " | Read more » | over 6 years ago | |||
| Dr_Z | "So I take it the percentages that come from scrolling along the graph are the ratio of the data pixel values to the max of 255, correct? " | Read more » | over 6 years ago | |||
| warren | "They are the RGB image data pixel values, from 0-255. And note that due to image processing, noise, etc, this may not directly correspond to absorb..." | Read more » | over 6 years ago | |||
| warren | "Ah, there is! setInterval -- but the getCrossSection function is already run using this technique. Can you share a link to your code so I can help ..." | Read more » | over 6 years ago | |||
| Reallygeek | "Is there not a way to make chrome console repeat a command over a period of time? " | Read more » | over 6 years ago | |||
| warren | "Oh sorry, you have to redefine the function with a new one of your own, that can be a revision of the existing one, and it'll get called each frame..." | Read more » | over 6 years ago | |||
| Reallygeek | "So when I typed "$W.getCrossSection()" into the console I got: TypeError: Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The provided..." | Read more » | over 6 years ago | |||
| warren | "Hi, I believe you should be able to override the $W.getCrossSection() function here: https://github.com/publiclab/spectral-workbench/blob/master/ap..." | Read more » | over 6 years ago | |||
| warren | "True! We've moved that code to its own library at https://github.com/publiclab/spectral-workbench.js -- i'll update these now! Thanks for the catch! " | Read more » | over 6 years ago | |||
| Reallygeek | "The links on the "View commented code for more detail." lead nowhere. " | Read more » | over 6 years ago | |||
| warren | "It looks like there may be a tiny light leak in the upper right corner -- see the little white dot? This could create a shaft of light through the ..." | Read more » | over 6 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 » | over 6 years ago | |||
| Flameytail | "i have not done the experement yet- but a detailed pre writen procedure is due on december 1st tommorow " | Read more » | over 6 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 » | over 6 years ago | |||
| warren | "That's so awesome, @sanchittechnogeek -- did it go smoothly for you? any trouble, or improvements you made? " | Read more » | over 6 years ago | |||
| hanswilms | "Not for me. Everytime I click "save" after clicking "calibrate" it doesn't do anything other than make the "Save" button a little circle of dots. " | Read more » | over 6 years ago | |||
| liz | "Seems like this is working now? " | Read more » | over 6 years ago | |||
| hanswilms | "It's okay! https://spectralworkbench.org/spectrums/110231 Is there anything else I can link? Like I said, it just starts trying to save my calibra..." | Read more » | over 6 years ago | |||
| warren | "Can you link us to your calibration attempt? Sorry you're having trouble! " | Read more » | over 6 years ago | |||
| liz | "On Android, use the Firefox browser. It allows you to choose which camera to look through. " | Read more » | almost 7 years ago | |||
| xose | "Hi Vman what happened to me was that chrome doesn't even work with the front camera using iphone. Unfortunately It doesn't support WebRTC so it is ..." | Read more » | almost 7 years ago | |||
| cfastie | "I don't recall seeing instructions for making spectra of plant leaves. Such a spectrum could be of the light reflected from the surface of a leaf o..." | Read more » | almost 7 years ago | |||
| rudolf455 | "the scale should have marks that indicate the wavelenghts up to 1 nm. spectral lines of different chemical elements are often very near together, ..." | Read more » | almost 7 years ago | |||
| cfastie | "Can you share an example of your spectra? Are they on Spectral Workbench? What spectrometer did you use? Are you interested in a more precise scal..." | Read more » | almost 7 years ago |