Software
An official USGS software project is code reviewed and approved at the bureau-level for distribution.
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R script to simulate point-count data and estimate population trend under various scenarios of changing phenology R script to simulate point-count data and estimate population trend under various scenarios of changing phenology
The script in this code repository simulates point-count data under an example scenario, sets up model input, and runs an N-mixture model with two components of detection (availability and perceptibility) to estimate the population trend. This simulation and analysis were developed to evaluate the consequences of changing spring phenology for estimating population trend of breeding bird
Code to estimate effects of rice growing on growth and survival of giant gartersnakes, Thamnophis gigas Code to estimate effects of rice growing on growth and survival of giant gartersnakes, Thamnophis gigas
This repository specifically contains code to reproduce analyses in: Rose, J.P., Nguyen, A.M., Jordan, A.C., Macias, D.A., Schoenig, E.J., Napolitano G.R., Kim, R., Ersan, J.S.M., Fulton, A.M., and Halstead, B.J. 2025. Rice cultivation supports growth and survival of a threatened semi-aquatic reptile. In review.
Creating Composites with Landsat Data Creating Composites with Landsat Data
This tutorial teaches users how to combine multiple spectral bands for visualization and create annual composites using known temporal compositing techniques.
Landsat Compositing of the Ucayali Region in Peru Landsat Compositing of the Ucayali Region in Peru
The USGS User Services, in collaboration with a NASA project, created this compositing workflow that produces Landsat composites for the Ucayali region in Peru. The Ucayali region is located in the heart of the Peruvian Amazon and spans approximately 102,400 square kilometers (39,537 square miles), making it the largest region in the country. The Ucayali experiences significant cloud...
Mapping Snow Change through the Time Series Analysis of Landsat Data Mapping Snow Change through the Time Series Analysis of Landsat Data
This tutorial guides users on how to complete time series analysis in the cloud, with a focus on snow and glacial retreat at the South Cascade Glacier.
Using Checksums to Verify Downloads with Machine-to-Machine Using Checksums to Verify Downloads with Machine-to-Machine
In this tutorial users will learn how to verify downloaded files by generating checksums and comparing them to those provided by different endpoints in the M2M API.