Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




814 posts

Ultimate Geek
+1 received by user: 57

Subscriber

Topic # 93382 19-Nov-2011 17:28 Send private message

I have an irregular polygon in google earth (4 points) and would like to know if there is an easy way to figure out the centeroid

Create new topic
2738 posts

Uber Geek
+1 received by user: 24

Trusted

  Reply # 547346 20-Nov-2011 07:17 Send private message

I would divide it into 2 triangles and get the centeroid of each (middle of one side, 1/3 towards opposite corner). Then take a line between the two centroids, apply a mass at each end, and you have a simple equation of finding the center of gravity of that line.

I'm an engineer, not a mathematician, so the above would be my starting point and then validate the method perhaps by dividing the area into different triangles.




You can never have enough Volvos!


56 posts

Master Geek
+1 received by user: 14


  Reply # 547347 20-Nov-2011 07:51 Send private message

See the collection of tools at:  http://www.earthpoint.us/Shapes.aspx

Copy and paste from Google Earth and it will calculate the centroid (along with other things).

Create new topic








Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when new jobs are posted to our jobs board:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

MH370 - Call for Search & Rescue Help
Created by DS248, last reply by Sideface on 17-Apr-2014 17:28 (735 replies)
Pages... 47 48 49


Forms of government for New Zealand
Created by charsleysa, last reply by Sidestep on 21-Apr-2014 11:26 (121 replies)
Pages... 7 8 9


why does the tax payer have to pay for the prince and princess' 6 star holiday?
Created by joker97, last reply by Geektastic on 17-Apr-2014 15:49 (67 replies)
Pages... 3 4 5


Whats the best wife friendly media centre?
Created by amorpeth, last reply by jonolynn on 19-Apr-2014 20:20 (14 replies)

Snap suffering Trans-Tasman congestion 18/04?
Created by Lias, last reply by NonprayingMantis on 19-Apr-2014 00:05 (26 replies)
Pages... 2


Help ! Home business connection and VDSL dead. yikes.
Created by Scotsman, last reply by Scotsman on 17-Apr-2014 21:10 (26 replies)
Pages... 2


galaxy s4 now on 4.4.2
Created by nzrock, last reply by Yabanize on 21-Apr-2014 11:14 (61 replies)
Pages... 3 4 5


TVNZ on Demand Jailbreak Detection
Created by TranceManNZ, last reply by hio77 on 18-Apr-2014 20:25 (12 replies)


Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.