Comments

Author Comment Last activity Moderation
warren "Ooh, nice! What are you looking to document here? " | Read more » over 9 years ago
warren "Oh, we'd be happy to send you one if you'd do the test! " | Read more » over 9 years ago
warren "It looks to me like both offer pretty good differentiation, but that the red filtered version depresses NDVI values. But since we're not assuming a..." | Read more » over 9 years ago
warren "You're right - we need to display the colormap in the saved images too -- but we haven't had any time to do further development on Infragram.org, s..." | Read more » over 9 years ago
warren "The colormap is based on one of yours: " | Read more » over 9 years ago
warren "Do you think there's nothing you can infer without the originals? I'm guessing you want to look at the blue/red gap? These are the camera serial n..." | Read more » over 9 years ago
warren "Hi! Did you have a question or want to tell us about your work? " | Read more » over 9 years ago
warren "Did you have a question? " | Read more » over 9 years ago
warren "I think they're gone, honestly. The bug seems to affect images captured via the webcam direct connection, but not images which were uploaded. I don..." | Read more » over 9 years ago
warren "These are all NDVI except the third, normal looking one which I labelled "original". Unfortunately a bug in infragram is not allowing display of th..." | Read more » over 9 years ago
warren "Cool! What are you hoping to document at this site? " | Read more » over 9 years ago
warren "I'm worried though that your images are not taken with the same calibration, so the wavelengths may not be comparable. Also, in this sample, I see ..." | Read more » over 9 years ago
warren "Hi, @chongyukwai - would you be willing to try it out and document the results if we sent you an Oil Testing Kit? " | Read more » over 9 years ago
warren " PCB on the right, of course. " | Read more » over 9 years ago
warren "Will Macfarlane (@wmacfarl) kept working on this and has a more compact version which we're not quite sure works. There may be a problem with the 5..." | Read more » over 9 years ago
warren "Your three spectra don't seem to have the same range -- are you sure about their calibrations matching? " | Read more » over 9 years ago
warren "Discussion on UV-C and lead detection here: https://groups.google.com/forum/#!searchin/plots-spectrometry/lead$20paint/plots-spectrometry/OPV9DJbEh..." | Read more » over 9 years ago
warren "FYI this cost $9: http://www.amazon.com/Mark-Feldstein-Associates-KF210-Toothbrush/dp/B0018BKX3O/ " | Read more » over 9 years ago
warren "Hi, this isn't quite your question but I just ordered a UVC light source that I'm curious to try to use to generate fluorescence in lead-containing..." | Read more » over 9 years ago
warren "It weighs so little that I just used duct tape to adhere a loop to the back. You probably don't want to cover the fake silver buttons as Mathew men..." | Read more » over 9 years ago
warren "Huh, interesting! Are they available in materials which don't fluoresce? Do you have a UV laser to test that out with and would you be able to post..." | Read more » over 9 years ago
warren "Can you test filling one out and taping a tube to it, and photographing it in landscape? For the video. Maybe on a carpeted floor or a wood table, ..." | Read more » over 9 years ago
warren "Yes, although we'd love to make an automated utility in WebGL to do this too, maybe automatically in Mapknitter: http://publiclab.org/notes/patcoyl..." | Read more » over 9 years ago
warren "There are two problems: JavaScript generating the image file (with canvas.toDataURL()), which maybe could be done in a web worker... Next, ensurin..." | Read more » over 9 years ago