grads画海温距平变化

TANER

想通过四十年的逐月soda数据,画出其逐月的20度海温的深度距平
a-> sdfopen h:\newdata.nc
Scanning self-describing file:  h:\newdata.nc
SDF file h:\newdata.nc is open as file 1
LON set to 40.25 99.75
LAT set to -9.75 4.75
LEV set to 5.01 5.01
Time values set: 1960:1:16:5 1960:1:16:5
E set to 1 1
ga-> define mean=ave(temp,t=1,t=492)
Averaging.  dim = 3, start = 1, end = 492
Define memory allocation size = 28800 bytes
Name already DEFINEd:  mean.   Will be deleted and replaced.
ga-> define mon=ave(temp,t+0,t=492,12)
Averaging.  dim = 3, start = 1, end = 492
Averaging.  dim = 3, start = 2, end = 492
Averaging.  dim = 3, start = 3, end = 492
Averaging.  dim = 3, start = 4, end = 492
Averaging.  dim = 3, start = 5, end = 492
Averaging.  dim = 3, start = 6, end = 492
Averaging.  dim = 3, start = 7, end = 492
Averaging.  dim = 3, start = 8, end = 492
Averaging.  dim = 3, start = 9, end = 492
Averaging.  dim = 3, start = 10, end = 492
Averaging.  dim = 3, start = 11, end = 492
Averaging.  dim = 3, start = 12, end = 492
Define memory allocation size = 345600 bytes
Name already DEFINEd:  mon.   Will be deleted and replaced.
ga-> define juping=mon-mean
Define memory allocation size = 345600 bytes
ga-> set t 1
Time values set: 1960:1:16:5 1960:1:16:5
ga-> set clevs 20
Number of clevs = 1
ga-> d juping

因为初学，所以了解不多，想请各位大神能够指点指点

苏拉苏拉

弄个gs脚本吧同志，直接窗口输指令多麻烦

syyzuimei

感谢亲爱的楼主分享~