Spatial Averaging

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

I have two variables plotted on an XY scatter, and four data sets plotted on the graph.

The data sets do not contain the same values of X or Y (but are contained within given ranges).

Is there a way in which i can average the values of X for any given Y?

Any help in this matter would be greatly appreciated,

Kind regards, Alex.
 
Alex -

Since your data do not have X values for all the same Ys, you'll have to
decide how to handle this. Perhaps you can compute an "expected" X for
each Y, kind of an inverse linear regression (which usually computes Y
as a function of X); then average these expected values for the four series.

- Jon
 
Yes, an "expected x for each y" is exactly what I require however, the relationship defined by my scatter graphs is unable to be defined at this stage by any simple mathmatical realtionship linking x and y. The relationship I would like to based the extrapolation of the data on is the one defined by the line drawn (in the scatter plot) between the points.

Any suggestions?

Alex.
 
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