cdlTools - Tools to Download and Work with USDA Cropscape Data

Downloads USDA National Agricultural Statistics Service (NASS) cropscape data for a specified state. Utilities for fips, abbreviation, and name conversion are also provided. Full functionality requires an internet connection, but data sets can be cached for later off-line use.

Last updated 12 months ago

5.00 score 10 stars 100 scripts 472 downloads

SamplingBigData - Sampling Methods for Big Data

Select sampling methods for probability samples using large data sets. This includes spatially balanced sampling in multi-dimensional spaces with any prescribed inclusion probabilities. All implementations are written in C with efficient data structures such as k-d trees that easily scale to several million rows on a modern desktop computer.

Last updated 7 years ago

4.48 score 10 stars 2 dependents 8 scripts 252 downloads

meanShiftR - A Computationally Efficient Mean Shift Implementation

Performs mean shift classification using linear and k-d tree based nearest neighbor implementations for the Gaussian, Epanechnikov, and biweight product kernels.

Last updated 4 years ago

openmp

3.92 score 4 stars 42 scripts 365 downloads

rasterKernelEstimates - Kernel Based Estimates on in-Memory Raster Images

Performs kernel based estimates on in-memory raster images from the raster package. These kernel estimates include local means variances, modes, and quantiles. All results are in the form of raster images, preserving original resolution and projection attributes.

Last updated 9 years ago

openmp

3.35 score 3 stars 15 scripts 174 downloads