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. This one shown at 15ms per frame, so the dot fairly zooms around the coastline.
All of this also gives you a little insight into how a geographical information system GIS deals with geometry and what goes into the shapes that you see on your screen. Or, maybe I just wanted to make another geogif. But either way I think I learned something.
A dot going round the Isle of Skye at 99, mph forever. So, how long is the coastline of Great Britain? Well, if you want to swim or kayak around all islands then you should think about training for a distance of around 2, miles.
Yes, this is Britain kind of. Another one, just for fun. Dr Alasdair Rae is a senior lecturer in the geography department of the University of Sheffield. This was a polyline file, so I converted it to a polygon, and then generalised it several times using the Visvalingam algorithm in mapshaper. What are the other big British islands? Remember that this refers to coastline length and not land area. Britain was certain that the Atlantic Ocean would offer unlimited opportunities and incredible wealth.
It hoped for the same fortunes that had befallen the Spanish — a land full of gold, silver and a native population that it could enslave. But the British were soon disappointed by their discoveries. The northern part of the Americas did not have the same mineral-rich mines as the south. There was, however, fertile soil ideal for growing crops.
And so the British began to set up plantations; displacing the native population, importing slaves, growing tobacco, cotton, sugar, and fishing cod. These staples soon proved extremely profitable and enriched both planters in the colonies and merchants at home while funding what would go on to become a great empire. Finally, Britain thought, it was possible to break the continental yoke and find new lands and markets.
Unlimited opportunities seemed to lie ahead, but it was not to last. Even under full imperial expansion, tapping into continental markets as sources of imports and as consumers of British exports was still essential.
Britain soon became one of the most important markets in the world as it re-exported American products all over Europe and beyond. But, again, the balance of trade relied upon the continent, and non-European trade was profitable only because of existing continental demands. Spain, for example, was a crucial trading partner throughout the 16th and 17th centuries.
While the UK was in the EU, companies could buy and sell goods across EU borders without paying taxes and there were no limits on the amount of things which could be traded. Under the terms of the deal, that won't change on 1 January, but to be sure that neither side has an unfair advantage, both sides had to agree to some shared rules and standards on workers' rights, as well as many social and environmental regulations.
You can read more detail on other aspects of the deal, including more on travel, fishing, and financial services, here. Freedom to work and live between the UK and the EU also comes to an end, and in , UK nationals will need a visa if they want to stay in the EU more than 90 days in a day period. Northern Ireland will continue to follow many of the EU's rules in order to avoid a hardening of its border with the Republic of Ireland.
This will mean however that new checks will be introduced on goods entering Northern Ireland from the rest of the UK. Now that it's no longer in the EU, the UK is free to set its own trade policy and can negotiate deals with other countries.
There may not be new taxes to pay at the border, but there will be new paperwork, and the potential for it to cause delays is a serious concern. The UK says it will delay making most checks for six months, to allow people to get used to the new system, but the EU will be checking paperwork and carrying out checks from day one.
So if businesses are not prepared, or do not fill in the new paperwork correctly, it could cause delays and backlogs at ports like Dover. The government has known about this for years, and has made plans to divert trade to other ports around the country and has built lorry parks in Kent, to avoid gridlock on the roads.
It's difficult to predict what the scale of any disruption might be, but government minister Michael Gove has said that UK businesses should prepare for some "bumpy moments". Sadly, no. Decisions are still to be made on data sharing and on financial services, and the agreement on fishing only lasts five years.
0コメント