Grassroots Mapping is a series of participatory mapping projects involving communities in cartographic dispute. Seeking to invert the traditional power structure of cartography, the grassroots mappers used helium balloons and kites to loft their own “community satellites” made with inexpensive digital cameras.

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At Public Lab, we've grown the Grassroots Mapping community into a broader effort to enable communities to understand and respond to environmental threats with DIY techniques.

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Efficient Image Sorting with Finder & Preview (Mac)

January 30th, 2012 by mathew

I've made an instructional video on efficient image sorting with Preview and Finder, for quickly winnowing down big groups of images to small sets, ready for MapKnitter:

Multispectral work at Sunol Ag Park

December 8th, 2011 by Stewart Long

This is a snapshot of some multispectral imaging that I have been working on with Pat Coyle at the organic agriculture park in Sunol, California. http://www.sagecenter.org/sunol-agpark/

near infrared tool:
http://publiclaboratory.org/tool/near-infrared-camera

Jeff Warren's NRG tutorial: http://youtu.be/Sfic43qRHqk
Warren on NDVI: http://youtu.be/-nNnWEHNO_w

Multispectral work at Sunol Ag Park

December 8th, 2011 by Stewart Long

This is a snapshot of some multispectral imaging that I have been working on with Pat Coyle at the organic agriculture park in Sunol, California. http://www.sagecenter.org/sunol-agpark/

near infrared tool:
http://publiclaboratory.org/tool/near-infrared-camera

Jeff Warren's NRG tutorial: http://youtu.be/Sfic43qRHqk
Warren on NDVI: http://youtu.be/-nNnWEHNO_w