longitude

  1. H

    Correlation of Spatial Data

    Hi, I have 2 data sets X1 and X2. Both data sets contain various entries of geo spatial data (latitude and longitude). X1=[lat1,lon1; lat2,lon2; lat3,lon3; ....] X2 is just like X1 but different values. X1 and X2 are different in length. Now I need to find the spatial correlation...
  2. H

    How Variance of Latitude/Longitude Relates to Variance of Distance on Earth Surface.

    I have been looking at using the position of the sun to estimate an observer's lat/lon. This relies on only three measurements, the sun's azimuth, elevation, and the time of observation. I wanted to get an idea of how accurately these three measurements must be known in order to determine the...