[GENERAL] Geometric, getting x and y co-ordinates from point datatype

Hi there,

Suppose you have a table:

id     pos
1    (0,5)
2    (-1,6)
3    (5.5,9.8)

Are there functions to get to the individual coords such that

SELECT id,get_x(pos),get_y(pos) FROM table;

gives

id    get_x    get_y
1    0    5
2    -1    6
3    5.5    9.8

From doing a bit of snooping about in the Programmer's Guide, I can only
assume that this would involve a modified version point_out.

Are these functions already out there?
If not, can someone give me pointers to the answer?
Would the solution indeed be a modified version of point_out and if so, can
someone give me the point_out source to work with?
(I don't program in C -hell, I don't really program in anything, I dabble-
but I'm quite happy to experiment)

Regards,

Stuart.




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| Stuart Rison            | Ludwig Institute for Cancer Research |
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