{"id":64,"date":"2015-09-23T00:06:33","date_gmt":"2015-09-23T00:06:33","guid":{"rendered":"http:\/\/www.prelive.unitec.ac.nz\/GisForConservation\/?p=64"},"modified":"2018-03-13T01:02:34","modified_gmt":"2018-03-13T01:02:34","slug":"exercise-4","status":"publish","type":"post","link":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/2015\/09\/23\/exercise-4\/","title":{"rendered":"Exercise 4"},"content":{"rendered":"<h6><span style=\"color: #333333;\">Surface Modelling<\/span><\/h6>\n<p style=\"text-align: left;\">In this exercise, a representation of the surface of the Earth is generated using TINs (Triangulated Irregular Network) to generate a 3D surface model. A 3D model provides a very convenient representation for visualizing the surface of the Earth as well as any phenomenon that can be represented in three dimensions (such as temperature and precipitation over a certain location).<\/p>\n<p style=\"text-align: left;\"><strong><a href=\"https:\/\/www.unitec.ac.nz\/GisForConservation\/wp-content\/uploads\/2015\/09\/Exercise4_PDF-wordpress.pdf\">Click here for PDF version<\/a><\/strong><\/p>\n<p><strong><span style=\"font-family: arial,sans-serif;\"><span style=\"font-size: large;\">A: Surface Modelling: Generating A TIN<\/span><br \/>\n<\/span><\/strong><\/p>\n<div dir=\"ltr\">\n<ol>\n<ol>\n<ol>\n<li>Open a New Blank Map in\u00a0ArcMap<\/li>\n<li>Add the waypoints shapefile\u00a0provided (Points_ge.shp)<\/li>\n<li>Click on the search Tab and\u00a0look for the \u201cCreate Tin\u201d tool<\/li>\n<li>Run the Create Tin (3D Analyst)\u00a0tool that comes out in the Search Window)<\/li>\n<li>Name the Output TIN \u201csurf-TIN\u201d; Select \u201cPoints_ge.shp\u201d as the input feature<\/li>\n<li>Click on OK<\/li>\n<li>The modelled TIN surface is\u00a0displayed<\/li>\n<\/ol>\n<\/ol>\n<\/ol>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/Hfk556fFBsM\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div><\/div>\n<div><span style=\"font-size: large;\"><b>B: Generating the Contours and\u00a0converting to Raster<\/b><\/span><\/div>\n<div>\n<ol>\n<ol>\n<ol>\n<li>Look for the tool \u201cSurface Contour\u00a0in the Search Window<\/li>\n<li>When the tool comes up, set the\u00a0Input surface to be the \u201csurfTIN\u201d file<\/li>\n<li>Provide the name for the Output\u00a0Feature Class as \u201csurfContour\u201d<\/li>\n<li>Set the contour intervals to 0.2<\/li>\n<li>Leave the rest of the fields as is<\/li>\n<li>Click on OK and the contours\u00a0should be generated showing the\u00a0contours at the specified intervals<\/li>\n<li>Using the Search, create a TIN\u00a0to Raster (3D Analyst), convert\u00a0the surfTIN into a raster format\u00a0and name it \u201csurfRaster\u201d<\/li>\n<li>Click on OK<\/li>\n<\/ol>\n<\/ol>\n<\/ol>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/3j5BNUsWqag\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div>\n<p><b>C. Generate Aspect and Hillshade\u00a0from Raster<\/b><\/p>\n<\/div>\n<div>\n<div>\n<ol>\n<ol>\n<li>Search for the Tool \u201cAspect\u201d in the Search Window<\/li>\n<li>Use the \u201csurfRaster\u201d as input<\/li>\n<li>Name the output \u201caspectsurf \u201d<\/li>\n<li>Click on OK<\/li>\n<li>Search for the Tool \u201cHillshade\u201d in the Search Window<\/li>\n<li>Use the \u201csurfRaster\u201d as input<\/li>\n<li>Name the output \u201chillshadsurf \u201d<\/li>\n<li>Click on OK<\/li>\n<\/ol>\n<\/ol>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/bjf60nx1XLo\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><strong><a href=\"https:\/\/www.unitec.ac.nz\/GisForConservation\/wp-content\/uploads\/2015\/09\/Exercise4_PDF-wordpress.pdf\">Click here for PDF version<\/a><\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Surface Modelling In this exercise, a representation of the surface of the Earth is generated using TINs (Triangulated Irregular Network) to generate a 3D surface model. A 3D model provides a very convenient representation for visualizing the surface of the Earth as well&hellip;<\/p>\n","protected":false},"author":3,"featured_media":48,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[10,3,14],"tags":[71,17,78,70,21,67,77,75,76,74,73,68,69,72,16],"class_list":["post-64","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-exercise-4","category-exercises","category-group-1","tag-3d-analyst","tag-arcmap","tag-aspect","tag-create-tin","tag-elevation","tag-exericse-4","tag-generate-aspect","tag-gps-points","tag-hillshade","tag-output-feature-class","tag-surface-contour","tag-surface-modelling","tag-tin","tag-tin-to-raster","tag-unitec","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/posts\/64","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/comments?post=64"}],"version-history":[{"count":23,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/posts\/64\/revisions"}],"predecessor-version":[{"id":442,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/posts\/64\/revisions\/442"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/media\/48"}],"wp:attachment":[{"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/media?parent=64"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/categories?post=64"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.unitec.ac.nz\/GisForConservation\/index.php\/wp-json\/wp\/v2\/tags?post=64"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}