From fedc0e7f5d04bc2c3930402451aa59bc24af69a8 Mon Sep 17 00:00:00 2001 From: Claudiu Forgaci Date: Sun, 18 Feb 2024 11:20:14 +0100 Subject: [PATCH] Update geospatial concepts episode --- episodes/08-intro-to-geospatial-concepts.Rmd | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/episodes/08-intro-to-geospatial-concepts.Rmd b/episodes/08-intro-to-geospatial-concepts.Rmd index 6ba292a3..33047c3b 100644 --- a/episodes/08-intro-to-geospatial-concepts.Rmd +++ b/episodes/08-intro-to-geospatial-concepts.Rmd @@ -7,9 +7,9 @@ author: 'Ana Petrović' ::: questions -- How do you describe the location of a geographic feature on the surface of the earth? -- How do you describe different types of CRS? -- How do you decide on what CRS to use? +- How do I describe the location of a geographic feature on the surface of the earth? +- What is coordinate reference system (CRS) and how do I describe different types of CRS? +- How do I decide on what CRS to use? ::: @@ -75,11 +75,14 @@ In this workshop, we use two CRS shown in @tbl-crs. | | WGS 84 (EPSG:4326) | Amersfoort / RD New (EPSG:28992) | |-----------------|----------------------------|----------------------------| -| Properties | Dynamic (relies on a datum which is not plate-fixed)
Celestial body: Earth
Prime meridian: Greenwich | Static (relies on a datum which is plate-fixed)
Ellipsoid: Bessel 1841 | +| Definition | Dynamic (relies on a datum which is not plate-fixed) | Static (relies on a datum which is plate-fixed) | +| Celestial body | Earth | Earth | +| Ellipsoid | WGS-84 | Bessel 1841 | +| Prime meridian | International Reference Meridian | Greenwich | | Datum | World Geodetic System 1984 ensemble | Amersfoort | | Projection | Geographic (uses latitude and longitude for coordinates) | Projected (uses meters for coordinates) | | Method | Lat/long (Geodetic alias) | Oblique Stereographic Alternative | -| Units | degrees | meters | +| Units | Degrees | Meters | : Main properties of WGS 84 and Amersfoort / RD New coordinate reference systems {#tbl-crs} @@ -171,6 +174,7 @@ Correct answer: b. EPSG:28992 - Each location on the Earth has its geographical latitude and longitude, which can be transformed on a plane using a map projection. -- Depending on the research question, we need a global or local CRS suitable properties. +- Depending on the research question, we need a global, regional, or local CRS suitable properties. + :::