Hay_Topic 15_WebMapping_Part2_use (1).pdf

Geog 380: Geospatial Communication Source: https://earth.nullschool.net Topic 15 - Web Mapping - Part II: Spatio-temporal Mapping GEOG 380 - Topic 15 © Geoffrey Hay (2023) 1 Learning outcomes By the end of this topic and associated readings, a successful student will be able to: 1. Describe so...

Geog 380: Geospatial Communication Source: https://earth.nullschool.net Topic 15 - Web Mapping - Part II: Spatio-temporal Mapping GEOG 380 - Topic 15 © Geoffrey Hay (2023) 1 Learning outcomes By the end of this topic and associated readings, a successful student will be able to: 1. Describe some issues with mapping spatio-temporal themes 2. Identify some strengths and weaknesses of animated maps GEOG 380 - Topic 15 2 Time is simple…right? § Time exists in all maps § Change in an attribute or location § Continuous § Discrete § Linear or cyclic § Huge implications for symbology § Which are you mapping? § World time § Database time § Display time Kraak and Ormeling 2021; Fig 8.1 GEOG 380 - Topic 15 3 Kraak and Ormeling 2021; Fig 8.3 The Nature of Time § d GEOG 380 - Topic 15 4 Minard’s 1869: Napoleon’s 1812 Russia campaign Kraak and Ormeling 2021; Fig 8.2 § d GEOG 380 - Topic 15 5 Possible spatio-temporal questions Does an entity exist? (if) Its location in time (when) Its duration (how long) Temporal texture (how often) Rate of change (how fast) Sequence of entities (what order) § Synchronization of events (do they occur together) § § § § § § https://www.researchgate.net/publication/320127813_Crossdisciplinarity_in_the_advance_of_Antar ctic_ecosystem_research/figures?lo=1 GEOG 380 - Topic 15 6 Mapping change § Can refer to: § Change in existence § Change in attribute § Change in location and/or geometry § Methods Kraak and Ormeling 2021; Fig 8.6 § Single static map § Multiple maps (small multiples) § Animation GEOG 380 - Topic 15 7 Kraak and Ormeling 2021; Fig 8.7 Other representations of time GEOG 380 - Topic 15 8 Cartograms Kraak and Ormeling 2021; Fig 8.7 A map showing geographically diagrammatic statistics of various kinds usually by the use of shades, curves, or dots GEOG 380 - Topic 15 9 Animations § Temporal § Display, database, and ‘world time’ § Resolution of different ‘times’ can lead to miscommunication § Easy to create videos – interactivity minimal – limited value § Non-temporal § Display time not linked to ‘world time’ GEOG 380 - Topic 15 10 Kraak and Ormeling 2021; Fig 8.9 Temporal animations GEOG 380 - Topic 15 11 Kraak and Ormeling 2021; Fig 8.9 Non-temporal animations GEOG 380 - Topic 15 12 Kraak and Ormeling 2021; Fig 8.9 Non-temporal animations GEOG 380 - Topic 15 13 Dynamic variables § Display time – time at which display change is initiated – can be linked to chronological time § Duration – Length of time nothing changes in the display – link to ‘world time’ important § Order – sequence of frames § Frequency – linked to duration GEOG 380 - Topic 15 14 Geovisualization of spatiotemporal stuff § NASAviz – Transforming Scientific Data Into Art https://metrocosm.com/nasaviz/ § *Dynamic Earth - Excerpt: https://www.youtube.com/watch?v=V3Tp2n7cDm4&t=262s (4:22mins) § Arctic Sea ice decline 1980-2015: https://www.youtube.com/watch?v=nCtuYj5f5T0 (0:37 secs) § Simulation of Aerosols in Earth's Atmosphere: https://www.youtube.com/watch?v=cjdqFqwQjAM&t=2s (1:28 mins) § NASA | The Ocean: A Driving Force for Weather and Climate https://www.youtube.com/watch?v=6vgvTeuoDWY (6 mins) § *NASA | A Year in the Life of Earth's CO2 https://www.youtube.com/watch?v=x1SgmFa0r04 (3:10 mins) https://metrocosm.com/nasaviz/ GEOG 380 - Topic 15 15 Required videos § Animation in ArcGIS Pro https://youtu.be/GmOXX_8-jZU (8:59 mins) § Spatiotemporal visualization https://pro.arcgis.com/en/pro-app/2.8/get-started/visualizetemporal-data.htm (9:35 mins) GEOG 380 - Topic 15 16