How far would you have to travel? I tried to calculate this based on a 1km distance from the shoreline, and concluded that it could be done by covering fewer than 2, miles — even though the coastline seems to be a lot longer.
Be my guest. I then created files with fewer and fewer vertices retained, all the way down to a nonsensical shape which retained hardly any of the original points. This is what I got, at 2 seconds per frame. Coastline length at different measurement scales. This time, you can really see more of the difference between the layers I produced. The figures on the graphics indicate what percentage of the original vertices were retained in each case. This shows Morar, Mallaig and Loch Nevis.
Each line represents a different level of generalisation. I then decided to take a smaller island and extract the individual vertices also known as nodes that make up the shapes you see in the maps above.
Using the version of the original shapefile where I retained 1 per cent of the original vertices, Skye is represented by individual nodes joined together to make a single polygon, as you can see below. This produces a pretty good approximation of the coastline of Skye for most purposes. At this resolution, the coastline of Skye comes in at miles km , compared to miles km at the original resolution. But of course, we need to remember that if we had digitised around every single rock around the coastline, the length would be nearly infinite.
Skye represented with a polygon comprised of vertices. Learn how your comment data is processed. Think This Map Was Brilliant? Enter Your E-mail Address:.
Comments You are wrong. Leave a Reply Cancel reply Your email address will not be published. Its glorious vista of golden sand stretches on for miles and has the only sand dune system in East Sussex. Camber Sands has even been used on many film sets, including many 'desert scenes' because of its vast landscape. Kids will love playing on the sand dunes here where they can fly kites, enjoy a relaxing stroll, or go windsurfing. After a day at the beach, you can stop by the nearby village of Camber for dinner, or have a barbecue on the dunes just be sure to get permission from Rother Council first.
Learn more about Camber Sands. High above the crashing waves on a North Cornwall cliff top, this ruined medieval castle is said to be the birthplace of the legendary King Arthur himself. Be sure to book a timed ticket that will permit you to enter the castle, cross the bridge, and visit the island. Learn more about Tintagel Castle. Its miles of unspoiled beaches, dramatic limestone cliffs, and lush green meadows make this a breathtakingly beautiful region.
Be sure to explore the town of Mumbles , famous for its small independent shops and cafes.
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