{"id":1287,"date":"2014-08-14T20:46:59","date_gmt":"2014-08-14T19:46:59","guid":{"rendered":"http:\/\/all-geo.org\/volcan01010\/?p=1287"},"modified":"2014-08-18T18:12:33","modified_gmt":"2014-08-18T17:12:33","slug":"almost-3d-view-of-haifoss-waterfall-iceland","status":"publish","type":"post","link":"https:\/\/all-geo.org\/volcan01010\/2014\/08\/almost-3d-view-of-haifoss-waterfall-iceland\/","title":{"rendered":"(Almost) 3D view of H\u00e1ifoss waterfall, Iceland"},"content":{"rendered":"
\"Ha\u00edfoss,<\/a>

Ha\u00edfoss, Iceland. Animated gif file may not animate in some browsers \/ mobile devices.\u00a0 Click image for larger version.<\/p><\/div>\n

H\u00e1ifoss is Iceland’s second highest waterfall<\/a>, with a drop of 122 metres.\u00a0 It’s name means ‘Milky elfin vomit spout’ in Icelandic.\u00a0 Not really; it’s ‘High waterfall’.\u00a0 People seem to enjoy the myth that Icelanders believe in elves<\/a>.\u00a0 It is located inThjorsadalur, about an hour northeast of Selfoss. Hj\u00e1lparfoss<\/a> and Gj\u00e1in<\/a> are in the same area. Note: If you are a tourist photographing a waterfall in Iceland, please don’t complain about the rain.<\/em><\/p>\n

I took this (almost) 3D image of H\u00e1ifoss by accident. Flicking between two photographs taken at slightly different places along the path gives an impression of depth. According to Wikipedia, this is due to the motion parallax effect<\/a>.\u00a0 Objects in the foreground move further than those in the distance.<\/p>\n

The animation was created with the ImageMagick<\/a> software. This is a command line based tool for rotating, cropping and resizing images, and much more. It is Free\/Open Source software<\/a>, so you can download and install it on as many machines as you like.\u00a0 I previously wrote a post explaining how to annotate and join images e.g. to make multipart figures<\/a> for scientific papers. The command used to make the H\u00e1ifoss animation is:<\/code><\/p>\n

convert -loop 0 -delay 60 H\u00e1ifoss_1.jpg H\u00e1ifoss_2.jpg H\u00e1ifoss3D.gif<\/p>\n","protected":false},"excerpt":{"rendered":"

H\u00e1ifoss is Iceland’s second highest waterfall, with a drop of 122 metres.\u00a0 It’s name means ‘Milky elfin vomit spout’ in Icelandic.\u00a0 Not really; it’s ‘High waterfall’.\u00a0 People seem to enjoy the myth that Icelanders believe in elves.\u00a0 It is located … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1287","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/posts\/1287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/comments?post=1287"}],"version-history":[{"count":5,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/posts\/1287\/revisions"}],"predecessor-version":[{"id":1293,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/posts\/1287\/revisions\/1293"}],"wp:attachment":[{"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/media?parent=1287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/categories?post=1287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/all-geo.org\/volcan01010\/wp-json\/wp\/v2\/tags?post=1287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}