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Working With Map Projections Objectives This assignment explores how to work with mapprojections in QGIS. Part 1: QGIS Tutorial Videos Watch the series of short instructional videos that introduce you to the software and techniques required to complete the following tasks: 3.1: Working with Coordinate Reference Systems in QGIS 3.2: Working with Coordinate Reference Systems in QGIS (2) Part 2: Exploring projections with QGIS Data The data for this lab is available in the a3data.: zip file. Exercise Video 3.1 covers a few points about working with coordinate reference systems in QGIS. Video 3.2 provides a few pointers related to on-the-fly coordinate systems. Tasks: 1. Create a new QGIS project and add these shapefiles: ne _110m_admin_o_countries, ne_110m_graticules_15, tissot30 Order and style the layers appropriately so that you can see the effects of the map projections on the graticule and the tissot indicatrix. Enable on-the-fly CRS transformation and change the CRS of you project the each of the following CRSs listed in the table below. Export each map (using the Project menu | Save as Image) and insert them into your table. For each CRS, classify them by CRS type (geographic or projected) and by the geometric relationship(s) preserved (shape, direction, area, distance, none). You can answer this question by creating a table like this one and filling in the missing values. A blank version of this table is available on Learn (16 marks) Map CRS name and EPSG ID CRS type Geometric (geographic, or relationship(s) projected) preserved WGS 84 (EPSG:4326) Geographic None World Azimuthal_Equidistant (EPSG:54032) World_ Mollweide (EPSG:54009) WGS 84) Pseudo Mercator (EPSG:3857) World_Robinson (EPSG:54030) 2. Reexamine the five projections you added to the table in Task 1. a. Compare the World Mollweide (EPSG:54009) projection with the WGS 84/ Pseudo Mercator (EPSG:3857) projection. Compare and contrast the pattern of distortion in these two projections. How do the Tissot circles change as you move away from the standard line? (4 marks) b. OF the five projections shown in the table from Task 1, which one would you choose for a map showing the areas of deforestation around the globe over the past 10 years? Why would choose that particular projection? (3 marks). 3. In addition to the five projections we explored above, a wide variety of other projections can be used for a variety of applications. Take time to explore some others. Explain whichmap projection would be appropriate for each of the following maps and why. (8 marks): Include a screen capture of a map including Tissot circles. a. Adot map of penguin populations in Antarctica b. A map showing areas of pine beetle infestation in North America c. A map showing state and provincial unemployment rates in North America d. Airline routes across the northern polar region 4. Create a new QGIS project and add the hd_buildings shapefile from assignment 1. By default the features will be added in EPSG:26917 (the coordinate reference system that the features in the shapefile are stored in). Zoom in to a small part of one of the heritage districts. Notice that the corners of the buildings appear to be a right-angles (as you would expect). Now enable OTF and change the CRS to EPSG:4326. How to the buildings corners appear now? Can you explain why the buildings corners no longer appear to be square? Now try EPSG:3857. Are the corners still square now? Include an exported image of the buildings in each of the three CRSs with your answer. (5 marks)

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