Vector Calculations on Geographic Data

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Devinya Herath
Devinya Herath 2011-5-23
I have four geographical points: P1, P2, P3 and P4. The coordinates (latitude & longitude pairs) of these points are available. I want to calculate the scaler product between the two vectors P1P2 and P3P4. How can I perform this calculation in Matlab?
Note: These geographic coordinates are relevant to a specific datum (for example: WGS84) and hence do not assume the earth to be spherical.
If these types of calculations are not possible with Matlab, does anybody know a software that can be used for this purpose?
Please help

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回答（1 个）

Walter Roberson
Walter Roberson 2011-5-23
How would you solve the problem in classical geometry, finding the scalar product of (x1,y1,z1) to (x2,y2,z2) when neither z1 nor z2 were known?
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Walter Roberson
Walter Roberson 2011-5-24
The altitude values are the same, but you want the WGS84 model to be followed anyhow ??
Devinya Herath
Devinya Herath 2011-5-25
yes. These points are assumed to be at the same hight above (or below) the reference ellipsoid WGS84

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