Hello,

I am trying to make the following code work. 

--------------------------------------------------------
import rpy2.robjects as robjects
r = robjects.r
r.library("fGarch")

def garch(p, q):    
    robjects.globalEnv["var_r"] = 
robjects.FloatVector([4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14])
    robjects.globalEnv["var_t"] = 
robjects.FloatVector([4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69])
    lm = r.lm("var_r ~ var_t")
    print r.anova(lm) 
    
    robjects.globalEnv["res"] = r.garchFit("data ~ 
garch("+str(p)+","+str(q)+")", "data=var_r")
    print r.summary("res")


if __name__ == "__main__":
    garch(1, 1)
----------------------------------------------------------

And the answer.

----------------------------------------------------------
Analysis of Variance Table

Response: var_r
          Df  Sum Sq Mean Sq F value Pr(>F)
var_t      1 0.64094 0.64094  2.1197 0.1835
Residuals  8 2.41902 0.30238               
Traceback (most recent call last):
  File "D:\Devel\workspace\Model\src\libstrategist\modelRE\garch.py", line 16, 
in <module>
    garch(1, 1)
  File "D:\Devel\workspace\Model\src\libstrategist\modelRE\garch.py", line 11, 
in garch
    robjects.globalEnv["res"] = r.garchFit("data ~ 
garch("+str(p)+","+str(q)+")", "data=var_r")
  File "C:\Python25\Lib\site-packages\rpy2\robjects\__init__.py", line 407, in 
__call__
    res = super(RFunction, self).__call__(*new_args, **new_kwargs)
rinterface.RRuntimeError: Error in if (allVarsTest != 1) { : missing value 
where TRUE/FALSE needed

Loading required package: timeDate
Loading required package: timeSeries
Loading required package: fBasics
Loading required package: MASS
Warning messages:
1: package 'fGarch' was built under R version 2.7.2 
2: package 'timeDate' was built under R version 2.7.2 
3: package 'timeSeries' was built under R version 2.7.2 
4: package 'fBasics' was built under R version 2.7.2 
Error in if (allVarsTest != 1) { : missing value where TRUE/FALSE needed
In addition: Warning message:
In data(data = var_r) : data set 'var_r' not found
----------------------------------------------------------

I don't understand why lm can see var_r and why garchFit don't. 

Thank you for any help!
Frédéric
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