[Numpy-discussion] Array as Variable using "from cdms2 import MV2 as MV"

dileep kunjaai dileepkunjaai at gmail.com
Mon Apr 25 02:50:53 EDT 2011

```Dear sir,

I am have 2  mxn numpy array say "obs" & "fcst". I have to
calculate    * sum of squre of (obs[i, j]-fcst[i, j])* using     from cdms2
import MV2 as MV   in CDAT without using "for"  loop.

For example:
obs=
[0.6    1.1    0.02    0.2   0.2
0.8    0.    0.    0.4   0.8
0.5    5.5    1.5    0.5   1.5
3.5    0.5    1.5    5.0   2.6
5.1    4.1    3.2    2.3   1.5
4.4    0.9    1.5    2.    2.3
1.1    1.1    1.5    12.6  1.3
2.2    12    1.7    1.6   15
1.9    1.5    0.9    2.5   5.5 ]

fcst=

[0.7    0.1    0.2    0.2   0.2
0.3    0.8    0.    0.    0.
0.5    0.5    0.5    0.5   0.5
0.7    1.     1.5    2.    2.6
5.1    4.1    3.2    2.3   1.5
0.7    1.    1.5    2.    2.3
1.1    1.1    1.1    12.7  1.3
2.2    2.    1.7    1.6   1.5
1.9    1.5    0.9    0.5   7.5]

here "obs" and "fcst" are numpy array
I give

obs=MV.array(obs)
fcst=MV.array(fcst)

Then it become

sbst=obs-fcst

>> subst=
[[ -0.1    1.    -0.18   0.     0.  ]
[  0.5   -0.8    0.     0.4    0.8 ]
[  0.     5.     1.     0.     1.  ]
[  2.8   -0.5    0.     3.     0.  ]
[  0.     0.     0.     0.     0.  ]
[  3.7   -0.1    0.     0.     0.  ]
[  0.     0.     0.4   -0.1    0.  ]
[  0.    10.     0.     0.    13.5 ]
[  0.     0.     0.     2.    -2.  ]]

But i dont know how to find sum of squre of each term....(Actually my aim is
to finding MEAN SQUARED ERROR)

Thanking you...................

--
DILEEPKUMAR. R
J R F, IIT DELHI
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