I was wondering where are films made around the world. Luckily we have IMDB as a datasource about films and cartograms as a visualisation technique. A cartogram is a map where areas have been adjusted to a quantity of interest. In this case we’ll adjust the area of each country so that the resultant area is proportional to the number of films in IMDB from that country.
So watching a lot of films from the US is probably to be expected but are you up enough on European and Japanese cinema?
[For info I used the Rcartogram package to make this plot.]
We can use the cyclic nature of the colour wheel to view the month and direction of travel. The key is in the middle of the plot. By month, red means the month of January and cyan July. By direction, red is north, west is dark purple, south is cyan and east is greeny-yellow.
So what can we see?
In both the Spanish and French shipping you can see the effect of the trade winds which mean you want to go near the poles to get a westerly wind to drive ships east to home. You can also see that ships seem to set off from the West Indies around June/July (does that correspond with harvests out there?). You can also see the Spanish ships reaching into South America unlike the French ships.
The Dutch and British shipping reach out east too. Similarly you can see the effect of the trade winds as ships go far south to go east but take the shortest path to come back west. British shipping is doing a lot with India and east Africa whereas the Dutch shipping is concentrated out to Dutch East Indies. The time of year story looks a little less clear but it looks like Dutch ships come home around January.
Also on the Dutch shipping you can clearly see triangular trade from Europe, down to Africa over to the West Indies and back to Europe.