distances between coordinates

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MOHD KHAIRUL BAZLI
MOHD KHAIRUL BAZLI 2012-6-11
回答： Chad Greene 2014-11-19
hi guys,
I have a problem. I have a set of coordinates in latitude and longitude system, like about 95 coordinates and i arranges it in matrix 95x2. so i would like to find the distances between each coordinates and makes the distances in matrix 95x95. can anybody help me?
  1 个评论
Walter Roberson
Walter Roberson 2012-6-11
Which distance measure?
For example do you want to simplify as if it was a sphere and you want to find the great circle distances? Or do you want the WGS-84 model? Do you want to include altitude in your calculations?

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回答（1 个）

Chad Greene
Chad Greene 2014-11-19
First, convert lat/lons into some projected x/y using an appropriate projection. After projecting lat/lon to x/y, coordinates will be in units of meters or feet and you can use John D'Errico's ipdm function to get the inter-point distance matrix.

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