a multiline regression problem

From: Li Tao (taoli AT hawaii.edu)
Date: Tue May 31 2005 - 15:32:26 MDT

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Hi, Everyone:

I am confused when I use ncl function : reg_multlin. My ncl file is
attached.

The following is the results of reg_multlin:
***********************************
Variable: coef
Type: float
Total Size: 20 bytes
            5 values
Number of Dimensions: 1
Dimensions and sizes: [5]
Coordinates:
Number Of Attributes: 2
  _FillValue : -999
  constant : 0.1775365
(0) -0.1371275
(1) 0.08913988
(2) 0.3832935
(3) -0.0621316
(4) 0.2312647
***************************

What is the constant 0.1775365 used for?

I use other five numbers to calculte the regression line, the results is
good, but if I add constant 0.1775365 as beta0, the results is not so
good, so I am confused what the constant 0.1775365 used for?

Could anyone give me an answer?

Thanks and regards!

Li Tao

application/octet-stream attachment: monoon_82.ncl

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