R help - Sep 2012 - How to calculate the number of points that fall inside each cell of a given raster using R

Hi everyone,

Here is a summary of what I am trying to do. Please take a look and let me
know how can i complete this below mentioned objective using R for a large
dataset.
**

   - *Objective:*
      - To calculate the number of points that fall inside each cell of a
      given raster
   - *Inputs:*
      - Raster data – Geotiff, approximate size: 4000 rows x 4000 columns
      - Points data – Shapefile
   - *Ouptut:*
      - A table with the following fields:
         - Cell ID
         - X-Coord (Longitude of the centroid of each raster cell)
         - Y-Coord (Latitude of the centroid of each raster cell)
         - Count of points in each cell
         - Pixel value of raster for each cell

Thanks very much.

Priyanka Sharma

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