dbjohnson / flhackday Goto Github PK
View Code? Open in Web Editor NEWLicense: MIT License
License: MIT License
Assumptions: - All fields have been treated equally - same crops, same inputs - All fields have been treated uniformly - farmers not already trying to compensate for these factors - No penalty for switching prescriptions frequently - Aspect only meaningful in presence of slope - Missing data missing for a reason - unworkable land, etc. No attempt to interpolate. - Lots of the differences in LAI are clearly (by satellite imagery) just due to what parts of the field were planted - see 8, 16, 17, 57, 68, 97, 150, 161, 175, 179 - Productivity zones = low, med, high. (kinda silly if range in predicted yield is low) - WDRVI/LAI not appropriate model input - measurements for current year will lag nutrient treatment - historical data a) not available or b) not useful predictor because of crop rotation, etc. - Goal is not to estimate LAI itself, rather management zones Interesting cases 25, 64, 68, 71, 91, 97, 102, 105, 114, 117, 118, 135, 160, 161, 171, 172, 186 Observations: - Often soil type is correlated with slope/aspect/curvature - 105, 149, 172 - Landsat pix size: ~30 meter pixel (1/4 acre) -- http://coast.noaa.gov/digitalcoast/data/landsat Notes: - Soil type mapped to soil texture triangle. A lot more information is available about these soil types, but not easy to scrape - Any soil types that couldn't be classified according to soil texture triangle, e.g., 'Dickman' removed Thought experiment: - Two independently distributed RVs - Transformed into discrete RVs: low, middle, high - Given thresholds of 33 and 66 pctile: .333 .333 .333 .333 .111 .111 .111 .333 .111 .111 .111 .333 .111 .111 .111 expected concordance: .333 (sum diagonal) / sum(all) - Given thresholds of 25 and 75 pctile: .25 .5 .25 .25 .0625 .125 .0625 .5 .125 .25 .125 .25 .0625 .125 .0625 expected concordance: .375 - Given thresholds of 10 and 90pctile: .10 .9 .10 .10 .001 .09 .001 .9 .09 .81 .09 .1 .001 .09 .001 expected concordance: .812 The wider we make the middle band, the higher the expected concordance
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.