# Daily Challenge Day 21

Mum and Dad left for a weeks holiday, for their 70th birthdays.

I spent day over on my personal metamorphs blog, writing my history. I also modified a saved google map and created another one to display on the blog.

The other day I revisited my town maps of the Yorke Peninsula, and plotted some out. The following map is another version of connecting all towns which are less than 25 km apart, from Port Pirie to Inneston. So I have extended my list of towns to include, the Yorke Peninsula district council, the Copper Coast District CouncilDistrict Council of Barunga West,  and Port Pirie Regional Council, which should cover most of the physical area of the peninsula and a bit beyond.

As can be seen the towns tend to be concentrated in the north and along the western coast, in the copper coast area.

From the grid, it would appear that the maximum dimension of a loop would be based on say a rectangle 240 x 135 km: or round trip of 750 km. Assuming most roads at 100 km/hr, then it would take less than 8 hours, if speed drops to 50 km/h, then trip would take 16 hours. Assuming 1 hour at each town, and the map is based on 124 towns, then would need 124 hours for visiting, at 24 hours/day that is around 6 days. Or take 8 hours/day then would take 16 days, with the travel time thrown in that pushes to 18 days. So roughly could loop the peninsula every month.

The following two maps show a simple travel path visiting all the towns either following a East/West zigzag pattern or a North/South zigzag pattern. They are derived simply by sorting on the town coordinates and then connecting adjacent towns in the list. Generated using Acad LT, and worksheet scripts in MS Excel.

The real travel path to seek however is the solution to the travelling salesman problem visiting all the towns in a loop and returning to origin. Though any closed circuit loop would do. As indicated above for a short stay in each town, the trip should take less than a month. For a 1 day stay at each town, then a trip approximately every 4 months would be required.

So onward to getting services mobilised.