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Allan Tanaka

2017-Mar-22 12:15 UTC

[R] argument to 'which' is not logical

I'm trying to run the code:?inds<-which(c != 0 ), but it gave me
error:?Error in base::which(x, arr.ind, useNames, ...) :?? argument to
'which' is not logical
Here is code:
alphas <- seq(0, 1, by=.002)mses <- numeric(501)mins <-
numeric(501)maxes <- numeric(501)for(i in 1:501){? cvfits <-
cv.glmnet(Train2, Train$Item_Outlet_Sales, alpha=alphas[i], nfolds=32)? loc
<- which(cvfits$lambda==cvfits$lambda.min)? maxes[i] <- cvfits$lambda
%>% max? mins[i] <- cvfits$lambda %>% min? mses[i] <-
cvfits$cvm[loc]}`%ni%`<-Negate(`%in%`)c<-coef(cvfits,s='lambda.1se',exact=TRUE)inds<-which(c
!= 0 )
Here is the c content looks like:?> c33 x 1 sparse Matrix of class
"dgCMatrix"? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1(Intercept) ? ?
? ? ? ? ? ? ? ? ?7.476895931Item_Fat_Content.Low.Fat ? ? ? ? . ? ? ? ?
?Item_Fat_Content.Regular ? ? ? ? . ? ? ? ? ?Item_Type.Breads ? ? ? ? ? ? ? ? .
? ? ? ? ?Item_Type.Breakfast ? ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Canned ? ? ? ? ?
? ? ? 0.003430669Item_Type.Dairy ? ? ? ? ? ? ? ?
-0.022579673Item_Type.Frozen.Foods ? ? ? ?
?-0.008216547Item_Type.Fruits.and.Vegetables ?. ? ? ? ? ?Item_Type.Hard.Drinks ?
? ? ? ? ?. ? ? ? ? ?Item_Type.Health.and.Hygiene ? ? . ? ? ? ?
?Item_Type.Household ? ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Meat ? ? ? ? ? ? ? ? ? .
? ? ? ? ?Item_Type.Others ? ? ? ? ? ? ? ? . ? ? ? ? ?Item_Type.Seafood ? ? ? ? ?
? ? ?. ? ? ? ? ?Item_Type.Snack.Foods ? ? ? ? ? ?. ? ? ? ?
?Item_Type.Soft.Drinks ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Starchy.Foods ? ? ? ? ?.
? ? ? ? ?Outlet_Establishment_Year.1987
?-0.345927916Outlet_Establishment_Year.1997 ?
1.692678186Outlet_Establishment_Year.1998
?-2.259508290Outlet_Establishment_Year.1999 ? . ? ? ? ?
?Outlet_Establishment_Year.2002 ?-0.032971913Outlet_Establishment_Year.2004 ?
1.756230495Outlet_Establishment_Year.2007 ? . ? ? ? ?
?Outlet_Establishment_Year.2009 ?-0.549210057Outlet_Size.Medium ? ? ? ? ? ? ?
0.056897825Outlet_Size.Small ? ? ? ? ? ? ?
-1.706006538Outlet_Location_Type.Tier.3 ? ?
?0.373456218Item_Identifier_CombinedFD ? ? ? . ? ? ? ? ?Item_MRP ? ? ? ? ? ? ? ?
? ? ? ? 0.505435352Item_Weight ? ? ? ? ? ? ? ? ? ? ?. ? ? ? ?
?Item_Visibility_MeanRatio ? ? ? -0.007274202
	[[alternative HTML version deleted]]

Jeff Newmiller

2017-Mar-22 14:19 UTC

head link

[R] argument to 'which' is not logical

The `c` function is extremely common. You CAN redefine this object as a numeric
variable if you want but I strongly recommend against it.

I don't recognize the function you are using to create cvfits, but it looks
like the coef method for that object is not returning a numeric vector, so your
comparison is with some other kind of object.

Notice how ugly your code looks below... only you can fix this by setting your
email program to send plain text to the mailing list.
-- 
Sent from my phone. Please excuse my brevity.

On March 22, 2017 5:15:04 AM PDT, Allan Tanaka <allantanaka11 at
yahoo.com> wrote:>I'm trying to run the code:?inds<-which(c != 0 ), but it gave me
>error:?Error in base::which(x, arr.ind, useNames, ...) :?? argument to
>'which' is not logical
>Here is code:
>alphas <- seq(0, 1, by=.002)mses <- numeric(501)mins <-
>numeric(501)maxes <- numeric(501)for(i in 1:501){? cvfits <-
>cv.glmnet(Train2, Train$Item_Outlet_Sales, alpha=alphas[i], nfolds=32)?
>loc <- which(cvfits$lambda==cvfits$lambda.min)? maxes[i] <-
>cvfits$lambda %>% max? mins[i] <- cvfits$lambda %>% min? mses[i]
<-
>cvfits$cvm[loc]}`%ni%`<-Negate(`%in%`)c<-coef(cvfits,s='lambda.1se',exact=TRUE)inds<-which(c
>!= 0 )
>Here is the c content looks like:?> c33 x 1 sparse Matrix of class
>"dgCMatrix"? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1(Intercept)
? ?
>? ? ? ? ? ? ? ? ?7.476895931Item_Fat_Content.Low.Fat ? ? ? ? . ? ? ? ?
>?Item_Fat_Content.Regular ? ? ? ? . ? ? ? ? ?Item_Type.Breads ? ? ? ? ?
>? ? ? . ? ? ? ? ?Item_Type.Breakfast ? ? ? ? ? ? ?. ? ? ? ?
>?Item_Type.Canned ? ? ? ? ? ? ? ? 0.003430669Item_Type.Dairy ? ? ? ? ?
>? ? ? -0.022579673Item_Type.Frozen.Foods ? ? ? ?
>?-0.008216547Item_Type.Fruits.and.Vegetables ?. ? ? ? ?
>?Item_Type.Hard.Drinks ? ? ? ? ? ?. ? ? ? ?
>?Item_Type.Health.and.Hygiene ? ? . ? ? ? ? ?Item_Type.Household ? ? ?
>? ? ? ?. ? ? ? ? ?Item_Type.Meat ? ? ? ? ? ? ? ? ? . ? ? ? ?
>?Item_Type.Others ? ? ? ? ? ? ? ? . ? ? ? ? ?Item_Type.Seafood ? ? ? ?
>? ? ? ?. ? ? ? ? ?Item_Type.Snack.Foods ? ? ? ? ? ?. ? ? ? ?
>?Item_Type.Soft.Drinks ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Starchy.Foods ?
>? ? ? ?. ? ? ? ? ?Outlet_Establishment_Year.1987
>?-0.345927916Outlet_Establishment_Year.1997 ?
>1.692678186Outlet_Establishment_Year.1998
>?-2.259508290Outlet_Establishment_Year.1999 ? . ? ? ? ?
>?Outlet_Establishment_Year.2002
>?-0.032971913Outlet_Establishment_Year.2004 ?
>1.756230495Outlet_Establishment_Year.2007 ? . ? ? ? ?
>?Outlet_Establishment_Year.2009 ?-0.549210057Outlet_Size.Medium ? ? ? ?
>? ? ? 0.056897825Outlet_Size.Small ? ? ? ? ? ? ?
>-1.706006538Outlet_Location_Type.Tier.3 ? ?
>?0.373456218Item_Identifier_CombinedFD ? ? ? . ? ? ? ? ?Item_MRP ? ? ?
>? ? ? ? ? ? ? ? ? 0.505435352Item_Weight ? ? ? ? ? ? ? ? ? ? ?. ? ? ? ?
>?Item_Visibility_MeanRatio ? ? ? -0.007274202
>	[[alternative HTML version deleted]]
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

S Ellison

2017-Mar-23 16:06 UTC

head link

[R] argument to 'which' is not logical

> I'm trying to run the code:?inds<-which(c != 0 ), but it gave me
error:?Error in
> base::which(x, arr.ind, useNames, ...) :?? argument to 'which' is
not logical
Your coefficients are not a numeric vector. You'll have to sort that out by
extracting or testing the individual values. A look at your output _tells you_
that the object is a sparse matrix of class dgCMatrix . Looking that up would
tell you that the nonzero elements are in slot x of the object. So it may be
unnecessary to ask which are zero; maybe you just need c at x (though I also
would recommend you avoid using common function names as variable names)

If you do need to test elements for zeroes, though, note that '==' and
'!=' are not usually recommended for comparisons with zero owing to
finite numerical representation. So that may well be unwise. See the Note in
?'=='.

S Ellison


> Here is code:
> alphas <- seq(0, 1, by=.002)mses <- numeric(501)mins <-
numeric(501)maxes
> <- numeric(501)for(i in 1:501){? cvfits <- cv.glmnet(Train2,
> Train$Item_Outlet_Sales, alpha=alphas[i], nfolds=32)? loc <-
> which(cvfits$lambda==cvfits$lambda.min)? maxes[i] <- cvfits$lambda
%>%
> max? mins[i] <- cvfits$lambda %>% min? mses[i] <-
cvfits$cvm[loc]}`%ni%`<-
>
Negate(`%in%`)c<-coef(cvfits,s='lambda.1se',exact=TRUE)inds<-which(c
!= 0
> ) Here is the c content looks like:?> c33 x 1 sparse Matrix of class
> "dgCMatrix"? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?1(Intercept) ? ? ? ? ? ? ? ? ? ? ?7.476895931Item_Fa
> t_Content.Low.Fat ? ? ? ? . ? ? ? ? ?Item_Fat_Content.Regular ? ? ? ? . ? ?
? ? ?Item_Type
> .Breads ? ? ? ? ? ? ? ? . ? ? ? ? ?Item_Type.Breakfast ? ? ? ? ? ? ?. ? ? ?
? ?Item_Type.Canned
> ? ? ? ? ? ? 0.003430669Item_Type.Dairy ? ? ? ? ? ? ? ? -
> 0.022579673Item_Type.Frozen.Foods ? ? ? ? ?-
> 0.008216547Item_Type.Fruits.and.Vegetables ?. ? ? ? ?
?Item_Type.Hard.Drinks
> ? ? ? ? ?. ? ? ? ? ?Item_Type.Health.and.Hygiene ? ? . ? ? ? ?
?Item_Type.Household
>  ? ?. ? ? ? ? ?Item_Type.Meat ? ? ? ? ? ? ? ? ? . ? ? ? ? ?Item_Type.Others
? ? ? ? ? ? ? ? . ? ? ? ? ?Item
> _Type.Seafood ? ? ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Snack.Foods ? ? ? ? ? ?.
? ? ? ? ?Item_Type.S
> oft.Drinks ? ? ? ? ? ?. ? ? ? ? ?Item_Type.Starchy.Foods ? ? ? ? ?. ? ? ? ?
?Outlet_Establishm
> ent_Year.1987 ?-
> 0.345927916Outlet_Establishment_Year.1997 ? 1.692678186Outlet_Establishm
> ent_Year.1998 ?-
> 2.259508290Outlet_Establishment_Year.1999 ? . ? ? ? ?
?Outlet_Establishment_Y
> ear.2002 ?-
> 0.032971913Outlet_Establishment_Year.2004 ? 1.756230495Outlet_Establishm
> ent_Year.2007 ? . ? ? ? ? ?Outlet_Establishment_Year.2009 ?-
> 0.549210057Outlet_Size.Medium ? ? ? ? ? ? ? 0.056897825Outlet_Size.Small
>  -
> 1.706006538Outlet_Location_Type.Tier.3 ? ? ?0.373456218Item_Identifier_Com
> binedFD ? ? ? . ? ? ? ? ?Item_MRP ? ? ? ? ? ? ? ? ? ? ? ?
0.505435352Item_Weight
> . ? ? ? ? ?Item_Visibility_MeanRatio ? ? ? -0.007274202
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

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R help - Mar 2017 - argument to 'which' is not logical

[R] argument to 'which' is not logical

[R] argument to 'which' is not logical

[R] argument to 'which' is not logical