Comments

Author Comment Last activity Moderation
warren " " | Read more » about 11 years ago
warren "I guess the WB introduces a big unknown about the relative amounts of NIR vs visible light. One way the NIR and VIS might mix in blue is that perha..." | Read more » about 11 years ago
warren "settling would work too, sure -- i think the important thing is the solubility " | Read more » about 11 years ago
warren "Hi Scott -- it looks like the samples are too dense for light to pass through... ideally the source light (laser or UV) goes all the way through th..." | Read more » about 11 years ago
warren "Hi, jyalarid - we are definitely planning a live streaming version of the infragram software: https://github.com/Pioneer-Valley-Open-Science/infrap..." | Read more » about 11 years ago
warren "I wonder if, although the absolute NDVI values seem not to be helpful, the images may still be able to distinguish between healthy and unhealthy ve..." | Read more » about 11 years ago
warren "Well, when the time comes, i'm happy to help you connect with others in the area who are using multispectral photography; there's a Boston-area mai..." | Read more » about 11 years ago
warren "Hey dusjagr - did you see these posts on a new design for a liquid spectrometer? http://publiclab.org/notes/warren/08-08-2013/design-for-coffee-sp..." | Read more » about 11 years ago
warren "There's a lift table linked to from this page, which shows diameter/lift generated in a table: http://www.chem.hawaii.edu/uham/lift.html " | Read more » about 11 years ago
warren "Wow... where do you get petroleum ether? I'm very interested in the isolation technique... is it applicable to other sample preparation, like for d..." | Read more » about 11 years ago
warren "Hi, Miguel - excellent and exciting to see your work! What kind of non polar solvent did you use? That's like, some kind of oily substance? " | Read more » about 11 years ago
warren "If you upload the image of selenium and clone the calibration of one of my spectra: https://spectralworkbench.org/tag/nist you'll have selenium. A..." | Read more » about 11 years ago
warren "Wow, very nice map! How have you modified the a495? " | Read more » about 11 years ago
warren "Is this when you press the "run" button? Can you post which version of Chrome and which OS, and which expression you were using in Infragrammar? Ho..." | Read more » about 11 years ago
warren "Hi, David - exciting possibilities. Is there a place where blooms may be more common so you can do a proof of concept? Great to see you using Infra..." | Read more » about 11 years ago
warren "Updated with a picture of it screwed together! " | Read more » about 11 years ago
warren "Hi Greg - do you have any code online yet? " | Read more » over 11 years ago
warren "Sweet. What kind of infrared photos are those? Infragram? " | Read more » over 11 years ago
warren "Chris, it occurs to me that we could try to come up with a way to generate an adaptation of NDVI based on a given un-white-balanced camera's photo ..." | Read more » over 11 years ago
warren "Maybe we should call our version of NDVI "INDVI" for Infragram-NDVI or something? Or BNDVI for Blue-NDVI? I'm loathe to make an already obscure acr..." | Read more » over 11 years ago
warren "They will shortly be in the mail to you, Mathew. Thanks! " | Read more » over 11 years ago
warren "Just updated with pix! " | Read more » over 11 years ago
warren "yes, thanks; unfortunately it never ended up working, but check out this update; we have some decent options now: http://publiclab.org/notes/warren..." | Read more » over 11 years ago
warren "Well, a common way to do hyperspectral is to just collect a whole row of spectra (y dimension is your row of pixels, x dimension is wavelength) and..." | Read more » over 11 years ago