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Interesting problem: Use of NonlinearRegress inside a package
*To*: mathgroup at smc.vnet.net
*Subject*: [mg84296] Interesting problem: Use of NonlinearRegress inside a package
*From*: "Hoa Bui" <hoabui05 at gmail.com>
*Date*: Tue, 18 Dec 2007 02:17:38 -0500 (EST)
Hello,
I created the following package:
Off[General::spell]; Off[General::spell1];
BeginPackage["Test`", {"Statistics`NonlinearFit`"}];
f::usage = "test NonlinearRegress inside a package";
Begin["`Private`"];
f[data_] := Module[{model, a, b, x, fit},
Print["The context of NonlinearRegress is ",
Context[NonlinearRegress]];
Print["The context of BestFit is ", Context[Bestfit]];
model = a*x + b;
fit = NonlinearRegress[data, model, {x}, {a, b}, RegressionReport
->{BestFit, ParameterTable, FitResiduals}];
Return[fit];
];
End[];
EndPackage[];
In[8]:=?f
test NonlinearRegress inside a package
In[9]:=data={{0.8493`,2.015`},{2.3355`,2.267`},{4.8832`,2.589`},{7.2187`,
2.812`}};
In[10]:=f[data]
The problem is that, inside the Module f I wanted to see the BestFit,
ParameterTable and FitResiduals, but since these are known only to
Test`Private`, what Out[10] does is it treats the NonlinearRegress as if the
option RegressionReport was not specified!
I know that this problem is related to the Context of the symbols/names, but
don't know how to get around it (I'd really like to keep the Module inside
the Private section of the package). Perhaps someone could help me?
Thanks a lot,
Hoa
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