[gradsusr] help with *.grd files (am new to GrADS)!

[govindas at msu.edu]

Hi,

I am new to GrADS and I would like to get some info with my work. I have  a gridded dataset *.grd, which I want to convert into ASCII file (or  someother better format) to be able to do some statistical analysis  with. here are my basic doubts.....

1. is it possible that statistical analysis can be performed with *.grd file themselves?
2. I have my other datasets in different formats like netcdf, ASCII -  can I import such files into GrADS and work on my statistical analyses?
3. As I am not familiar with GrADS and its functionalities,  I was  planning to do my analyses using R, in which case I want my .grd file  converted into some other "R"-friendly format (I tried using some R  packages/functions to convert gridded format into ASCII but, it did not  work!)
4. if possible, can I get some tutorials specific to above mentioned  issues, and analyses like PCA, Time-Series analysis, lag  auto-correlations and stuff..! I was going thro' some tutorials where I  obtained basic info about reading the .ctl file and plotting out the  variables (which helped me visualize my dataset actually!)

Thanks,
Mahalakshmi
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