Dear Happy R-users & experts,

I am in need of advice, 
While working with spatial data (x & y coordinates of seed locations) I have come accross the problem that I need to convert my point data into a matrix or grid system. I then need to count how often a point falls into a certain position in the matrix or grid. I have searched all day online, asked collegeas but nothing works.

Sadly my R "box of tricks" has run out.

My (point) data looks like this;

x         y
2.3    4.5
3.4      0.2

and continues for another million records. 

Now my question; is there any function that is able to "count" how often a point falls into a grid based on the x and y location? So I need to discretize the spatial locations to a regular grid and then counting how often  a point occurs.

Many thanks for your thoughts on this problem.

Marco Visser









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