The afternoon session will be an overview of the widgets of SWMPrats and selected time series topics. The SWMPrats website was created to assist the NERRS program with analysis and interpretation of SWMP data. Three widgets on the website allow users to summarize trends within and between sites using a point-and-click approach. Selected time series topics will include weighted regression for trend analysis, time series decomposition, and Seasonal Kendall tests.
Download all content (individual content below)
Objectives
- Understand the resources provided by SWMPrats
- Learn the widgets and their assumptions
- Familiarity with specific time series topics, why and how they are used
1:00pm Software set-up/help
Instructors will assist workshop attendees with last‐minute software issues.
1:15pm Introduction to Widgets
Overview of SWMPrats website Overview of interactive widgets
- SWMP summary plots - evaluate trends of a single parameter at a single site
- SWMP trend maps - compare trends of a single parameter within and between reserves using a map
- SWMP aggregations - compare aggregated trends of different parameters within and between reserves
Materials: presentation, script
2:00pm Time Series Topic 1
Topic 1: Weighted regression in tidal waters
- Presentation on the theory and rationale of WRTDS for tidal waters
- Apply WRTDS to NERRS sites, assess model fit, create visualization of results
Materials: presentation, script, noczbnut.RData, noczbwq.RData
3:00pm BREAK
3:30pm Time Series Topic 2
Topic 2: Time series decomposition
- Presentation on the theory and rationale of time series decomposition
- Decompose NERRS time series using methods in SWMPr
Materials: presentation, script, supplement
4:15pm Time Series Topic 3
Topic 3: Seasonal Kendall tests
- Presentation on the theory and rationale of Seasonal Kendall Tests
- Evaluate the significance and direction of a trend using NERRS data
Materials: presentation, script, noczbnut.RData