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.




841 posts

Ultimate Geek
+1 received by user: 66

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
2839 posts

Uber Geek
+1 received by user: 31

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!


59 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 tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Dirty Politics: Nicky Hager's New Book
Created by ajobbins, last reply by Glassboy on 20-Aug-2014 17:57 (264 replies)
Pages... 16 17 18


CGA. Is it fair?
Created by BTR, last reply by Tzoi on 20-Aug-2014 20:48 (36 replies)
Pages... 2 3


Free: Smart Button for your Android device
Created by freitasm, last reply by eXDee on 20-Aug-2014 19:21 (89 replies)
Pages... 4 5 6


It was hardly 'hacking' was it?
Created by CB_24, last reply by BarTender on 19-Aug-2014 22:36 (87 replies)
Pages... 4 5 6


Shortening the DSL loop on a long driveway
Created by hio77, last reply by hio77 on 20-Aug-2014 21:00 (27 replies)
Pages... 2


Vodafone now charging you to receive a bill via post
Created by stocksp, last reply by richms on 20-Aug-2014 19:28 (79 replies)
Pages... 4 5 6


NZ Transport Agency: Snapchat
Created by freitasm, last reply by NzBeagle on 20-Aug-2014 19:27 (44 replies)
Pages... 2 3


Vodafone TV multicast settings on pfSense?
Created by kenkeniff, last reply by hio77 on 21-Aug-2014 01:43 (64 replies)
Pages... 3 4 5



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.