{"id":5560,"date":"2025-09-22T19:09:29","date_gmt":"2025-09-23T00:09:29","guid":{"rendered":"https:\/\/sites.owu.edu\/geog-291\/?p=5560"},"modified":"2025-09-22T19:09:29","modified_gmt":"2025-09-23T00:09:29","slug":"dondero-week-5","status":"publish","type":"post","link":"https:\/\/sites.owu.edu\/geog-291\/2025\/09\/22\/dondero-week-5\/","title":{"rendered":"Dondero &#8211; Week 5"},"content":{"rendered":"<p><b>Chapter 4:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Adding a folder through the catalog pane allows you to import data from that folder into your current project<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Older shape files can be converted to feature classes in order to fully utilize them in arcgis.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Arcgis allows you to selectively create, modify or delete fields within a features data table and use python expressions to manipulate the data held within them.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Joining data tables together allows you to select only the data you need for your application from a much larger set.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Sums, averages, concatenations and many other operations can all be completed on data fields using Python expressions.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Using SQL queries, data can be sorted through to find only the information relevant to your search by using search terms along with boolean operators.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Spatial joins allow you to count the number of a feature within a bounding region and output it to a new layer.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5562\" src=\"https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200817-300x125.png\" alt=\"\" width=\"300\" height=\"125\" srcset=\"https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200817-300x125.png 300w, https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200817.png 759w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><b>Chapter 5:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Since the earth is a sphere, but maps are usually displayed on a 2D surface, various map projections are used to translate the 3D surface onto a 2D one, with various drawbacks and advantages to each<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">The Robinson Projection is best for general uses where the whole earth needs to be shown<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">The larger the region you are trying to display, the larger the amount of distortion that the map will have, no matter the projection used<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Shapefiles are a common data type used for vector data in GIS software.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Spatial data can often be found and downloaded for free on the internet, allowing you to select only the data you need for your project.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Living Atlas gives you access to large quantities of geospatial data that you can download directly into your current project through the add data button<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5563\" src=\"https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200904-300x156.png\" alt=\"\" width=\"300\" height=\"156\" srcset=\"https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200904-300x156.png 300w, https:\/\/sites.owu.edu\/geog-291\/wp-content\/uploads\/sites\/208\/2025\/09\/Screenshot-2025-09-22-200904.png 754w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><b>Chapter 6:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">GIS allows you to aggregate data by dissolving or combining finer groups into more general ones<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">You can clip a larger map down to a single region to more closely match the focus of your project<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">You can append data sets together to create a single larger feature class<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">The union tool lets you combine two polygon feature layers into a single output layer<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chapter 4: Adding a folder through the catalog pane allows you to import data from that folder into your current project Older shape files can be converted to feature classes in order to fully utilize them in arcgis. Arcgis allows you to selectively create, modify or delete fields within a features data table and use python expressions to manipulate the data held within them. Joining data tables together allows you to select only the data you need for your application from a much larger set. Sums, averages, concatenations and many other operations can all be completed on data fields using Python expressions. Using SQL queries, data can be sorted through to find only the information relevant to your search by using search terms along with boolean operators. Spatial joins allow you to count the number of a feature within a bounding region and output it to a new layer. Chapter 5: Since the earth is a sphere, but maps are usually displayed on a 2D surface, various map projections are used to translate the 3D surface onto a 2D one, with various drawbacks and advantages to each The Robinson Projection is best for general uses where the whole earth needs to be shown The larger the region you are trying to display, the larger the amount of distortion that the map will have, no matter the projection used Shapefiles are a common data type used for vector data in GIS software. Spatial data can often be found and downloaded for free on the internet, allowing you to select only the data you need for your project. Living Atlas gives you access to large quantities of geospatial data that you can download directly into your current project through the add data button Chapter 6: GIS allows you to aggregate data by dissolving or combining finer groups into more general ones You can clip a larger map down to a single region to more closely match the focus of your project You can append data sets together to create a single larger feature class The union tool lets you combine two polygon feature layers into a single output layer &nbsp;<\/p>\n","protected":false},"author":2319,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-5560","post","type-post","status-publish","format-standard","hentry","category-course-student-work"],"_links":{"self":[{"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/posts\/5560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/users\/2319"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/comments?post=5560"}],"version-history":[{"count":1,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/posts\/5560\/revisions"}],"predecessor-version":[{"id":5565,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/posts\/5560\/revisions\/5565"}],"wp:attachment":[{"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/media?parent=5560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/categories?post=5560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-291\/wp-json\/wp\/v2\/tags?post=5560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}