[gradsusr] accumlate( combine) data into monthly or seasonal using grads for percipitation satellite products

[Marwan Kheimi]

Hi guys, 

I need help with this control file to find the average monthly precipitation for this control file but the problem is I don’t know what is the proper way to do it. 
How to accumulate the values using Grads codes ?
Also, if any one could help me to find the root square coefficient
this a daily file temporal scale.
chsub  t1  t2  string
Some how I have to use this script however I am new to grads please if any could help me I would really appreciate it 
I also, somehow know that the grip. file could be another solution to figure it out.  
DSET ../0.25deg-DLY_00Z/%y4/%y4%m2/CMORPH_V1.0_RAW_0.25deg-DLY_00Z_%y4%m2%d2  
TITLE  CMORPH Version 1.0BETA Version, daily precip from 00Z-24Z 
OPTIONS template little_endian
UNDEF  -999.0
XDEF 1440 LINEAR    0.125  0.25
YDEF  480 LINEAR  -59.875  0.25
ZDEF   01 LEVELS 1
TDEF 99999 LINEAR  01jan1998 1dy 
VARS 1
cmorph   1   99 yyyyy CMORPH Version 1.o daily precipitation (mm)  
ENDVARS  kind regards, Marawn 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20130214/c8eb563a/attachment-0003.html