RSS feed for warren Preview profile tag system


warren 7279 research notes and wiki edits | Admin

The creator of GrassrootsMapping.org and co-founder and Research Director for Public Lab, Jeffrey Warren designs mapping and civic science tools and professionally flies balloons and kites. Notable software he has created include the vector-mapping framework Cartagen and orthorectification tool MapKnitter, as well as open spectral database and toolkit Spectral Workbench.

He is Vice President of the board of the Open Source Hardware Association, on the board of alternative education program Parts and Crafts in Somerville MA, on the advisory board of Personal Democracy Media's WeGov and an advocate of open source software, hardware, and data. He co-founded Vestal Design, a graphic/interaction design firm in 2004, and directed the Cut&Paste Labs project, a year-long series of workshops on open source tools and web design in 2006-7 with Lima designer Diego Rotalde.

Jeff holds an MS from MIT and a BA in Architecture from Yale University, and spent much of that time working with artist/technologist Natalie Jeremijenko, building robotic dogs and stuff. To find out more, visit Unterbahn.com.

????


Barnstars



Infragrammar: compositing infrared images with simple mathematic expressions

by warren about 4 years ago | 8 | 5,465 | 0

Don Blair and I had been chatting about making an in-browser JavaScript-b...

Read more


White balancing a Canon camera for Infragram photography

by warren about 4 years ago | 12 | 5,741 | 1

Chris Fastie has already [covered this in great detail](/notes/cfastie/06-17-...

Read more


Steampunk spectrometer photos

by warren about 4 years ago | 0 | 3,132 | 0

Just posting some nice almost-complete photos of the Steampunk Spectrometers from the Kicksta...

Read more


Public Lab community growth, Dec 2010-Aug 2013

by warren about 4 years ago | 0 | 2,142 | 0

I occasionally go through our traffic tracking graphs on Google Analytics, and though this might ...

Read more



Comparative and qualitative flame spectroscopy

by warren about 4 years ago | 0 | 4,156 | 1

The lead image is from three photos on [Wikipedia's article on flame testing](https://en.wikipedi...

Read more


Importing spectra from NIST and WebMineral.com to Spectral Workbench

by warren about 4 years ago | 4 | 5,759 | 2

Note: this may now be possible more easily using [the JSON/CSV upload feature of Spectral Wor...

Read more


Improvements and additions to the new website

by warren about 4 years ago | 0 | 1,400 | 0

The past few weeks have seen a number of small improvements to the site, and I wanted to highligh...

Read more


Design for coffee spectrometer

by warren about 4 years ago | 4 | 5,251 | 2

Based on the [ideas I was brainstorming a few days ago](/notes/warren/08-06-2013/brainstorming-co...

Read more



Smartphone spectrometer molds being machined

by warren about 4 years ago | 0 | 2,071 | 1

Louis from ProtoEdge just sent me these great photos of the aluminum mold...

Read more


Brainstorming "coffee analytics" system for coffee shops

by warren about 4 years ago | 5 | 4,069 | 1

Lots of folks have talked about using spectrometers in coffee shops, and I know several of our [c...

Read more


Infragram.org web-based NDVI processor launched

by warren about 4 years ago | 0 | 1,925 | 1

Although many folks are using Ned Horning's [Photo Monitoring Plugin](/wik...

Read more


More Infragram sample webcam tests

by warren about 4 years ago | 2 | 2,955 | 0

Following up on my recent posts on Infragram tests, I just received ...

Read more



Improvements in Infragram NDVI with test cameras

by warren about 4 years ago | 10 | 3,702 | 0

I'd had [a lot of trouble](/notes/warren/06-18-2013/continuing-difficulties-with-infrablue-in-che...

Read more


Modifications and tweaks for flare spectrometry

by warren about 4 years ago | 1 | 2,860 | 1

Down in Chalmette, Louisiana, [folks have been using DIY spectrometers to try to detect light fro...

Read more


Smartphone spectrometer now available on Shapeways

by warren about 4 years ago | 0 | 3,981 | 1

As the smartphone spectrometer is going into production, we're also posting the most recent 3d pr...

Read more




Proposal: SLR spectrometer attachment

by warren about 4 years ago | 5 | 3,907 | 1

Lots of folks have talked about doing a higher-end spectrometer attachment based on an SLR lens m...

Read more


Smoothing macro using Spectral Workbench API

by warren about 4 years ago | 0 | 2,241 | 1

We turned off "smoothing" a while ago on the capture interface for [Spectral Workbench](https:...

Read more


The Promise of Small Data

by warren about 4 years ago | 0 | 1,040 | 2

TechPresident just ran an opinion piece I wrote on community-produced "Small Data" and a critique...

Read more


New PublicLab.org website launched

by warren about 4 years ago | 0 | 1,218 | 0

Hello all -- you've probably been hearing about this process on some of the lists, but we've j...

Read more



Saugus landfill overflight photos -- with Infragram

by warren about 4 years ago | 1 | 2,708 | 0

Over the past few years we've periodically [mapped the Saugus incinerator landfill near Revere be...

Read more


New foldable spectrometer packaging

by warren about 4 years ago | 1 | 3,360 | 2

We've just redesigned the [foldable spectrometer](http://store.publiclab.org/products/foldable-mi...

Read more


Channel swapping

by warren over 4 years ago | 1 | 2,880 | 0

Due to the [issues with blue channel infrared leakage](/notes/warren/06-18-2013/continuing-dif...

Read more


Small camera conversion tests

by warren over 4 years ago | 7 | 5,778 | 0

I've been converting a series of sample cameras to identify good [Infragram Point & Shoot](http:/...

Read more



Continuing difficulties with infrablue in cheaper CMOS cameras

by warren over 4 years ago | 10 | 4,199 | 0

I'm in charge of sourcing more compact and cheaper cameras for the Infragram Point & Shoot, and h...

Read more


NDVI difficulties with infrablue filter

by warren over 4 years ago | 4 | 4,410 | 0

Some folks at the pirateship and I used a Roscoe 2008 filter which had ...

Read more


Infragram test photos from a plane window

by warren over 4 years ago | 2 | 2,555 | 1

I flew back from Colorado via Philly and took lots of Infragram photos t...

Read more


Infragram camera conversion test

by warren over 4 years ago | 0 | 2,194 | 0

Just posting photos of this excellent camera -- including microSD, lithium battery, and 1.3 MP re...

Read more



Lots of sample Infragram images for testing

by warren over 4 years ago | 3 | 3,453 | 0

I went to Fresh Pond near Boston on a rainy day and took LOTS of [Infragram pictures](/wiki/i...

Read more


Talk at the New England Society of Applied Spectroscopy

by warren over 4 years ago | 1 | 2,121 | 1

I'm giving a short talk at the NE chapter of the Society of Applied Spectroscopy today outside Bo...

Read more


Is there an offline version of Mapknitter?

Accepted

stevie asked about 3 days ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 4 days ago

Answers by warren

answered on Sep 19, 2017 1

answered on Sep 19, 2017 0

answered on Sep 19, 2017 0

Show all 6 answers »

How can I add credit for main photo on Wiki?

Accepted

Zengirl2 asked about 5 days ago

Answers by warren

What are some sources of new aerial imagery of Harvey damages?

Accepted

warren asked about 10 days ago

Answers by warren

answered on Sep 12, 2017 0

answered on Sep 13, 2017 0

answered on Sep 16, 2017 0

Show all 3 answers »

How do I join a volunteer Disaster Response Team for flooding?

Accepted

warren asked about 14 days ago

Answers by warren

What is the best way to formalize connecting needs with offers?

bsugar asked about 15 days ago

Answers by warren

answered on Sep 08, 2017 0

answered on Sep 08, 2017 0

Show all 2 answers »

How much do different oil pollution tests cost?

Accepted

warren asked about 15 days ago

Answers by warren

What does oil pollution mean for my health?

Accepted

warren asked about 15 days ago

Answers by warren

What could teenagers do to support Harvey response efforts?

Accepted

warren asked about 15 days ago

Answers by warren

How do I collect a sample for laboratory analysis?

Accepted

warren asked about 15 days ago

Answers by warren

How big are smoke particles, in microns?

Accepted

warren asked about 23 days ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 24 days ago

Answers by warren

Just tried to publish a Replication of the KnowFlow and fail ...

MadTinker asked about about 1 month ago

Answers by warren

answered on Aug 03, 2017 0

answered on Aug 03, 2017 1

Show all 5 answers »

How To Make Time Lapse Spectrometer

LightWaveResearch8000 asked about 2 months ago

Answers by warren

How do I install a bootloader on a Riffle data logger?

Accepted

warren asked about 3 months ago

Answers by warren

Desktop Spectrometry Kit to arduino?

jjoll asked about 3 months ago

Answers by warren

How can we get rid of spam on the main PL page?

marlokeno asked about 3 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 3 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

Accepted

warren asked about 4 months ago

Answers by warren

answered on Jun 12, 2017 0

answered on Jun 14, 2017 0

Show all 4 answers »

How can real-time camera monitoring be set up?

cherylh asked about 4 months ago

Answers by warren

answered on May 16, 2017 0

answered on Jun 19, 2017 0

Show all 4 answers »

What are the health effects related to fine particles of calcium carbonate?

Accepted

stevie asked about 5 months ago

Answers by warren

answered on May 12, 2017 0

answered on May 12, 2017 1

answered on May 16, 2017 0

answered on May 22, 2017 1

Show all 7 answers »

Decibel meters for iPhones?

Accepted

warren asked about 5 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 6 months ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

warren asked about 6 months ago

Answers by warren

answered on Mar 14, 2017 0

answered on Mar 14, 2017 0

answered on Apr 10, 2017 0

Show all 4 answers »

JDEPC-OV05 camera intelligent exposure

tim_spec asked about 7 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 8 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 8 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 8 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 9 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 9 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 9 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 10 months ago

Answers by warren

How do I make a video from a series of photos?

Accepted

warren asked about 10 months ago

Answers by warren

answered on Dec 05, 2016 0

answered on Dec 05, 2016 0

answered on Jul 23, 2017 0

Show all 5 answers »

Spectral Workbench recording time?

Accepted

dhale2 asked about 10 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 10 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 10 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about 11 months ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about 11 months ago

Answers by warren

Can you share a link to project documentation?

vwls asked about 11 months ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about 11 months ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about 11 months ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about 12 months ago

Answers by warren

answered on Oct 12, 2016 0

answered on Jun 19, 2017 0

Show all 2 answers »

how to delete my spectra on Spectral Workbench

redleon asked about 12 months ago

Answers by warren

How can I reduce ambient light inside the Desktop Spectrometry Starter Kit?

Accepted

warren asked about about 1 year ago

Answers by warren

answered on Sep 20, 2016 0

answered on Sep 20, 2016 0

Show all 5 answers »

What's the best way to archive/store a timelapse video?

warren asked about about 1 year ago

Answers by warren

answered on Sep 16, 2016 0

answered on Dec 08, 2016 0

Show all 2 answers »

Has anyone used a timelapse camera in stream monitoring?

stevie asked about about 1 year ago

Answers by warren

Question: What is the Open Source Community's Take the MIT License?

Accepted

nshapiro asked about about 1 year ago

Answers by warren

Does the new Question feature work?

Accepted

warren asked about about 1 year ago

Answers by warren

Question: How to rename a set?

AndrewJamesLaplante asked about over 1 year ago

Answers by warren

Question: How do I get the calibration user interface?

PeterDH asked about over 1 year ago

Answers by warren

View these maps <a href='//mapknitter.org/profile/warren'>at MapKnitter.org &raquo;</a>

Title Creation date Image