[R-sig-ME] Error in gamm4 function in names(x) <- value: 'names' attribute must be the same length as the vector
王 嘉炜
w@ngji@wei92 @ending from hotm@il@com
Fri Jan 4 05:43:48 CET 2019
Dear R users,
I am using the *gamm4 package* to model the ozone pollution concentration according to some environmental covariates by generated additive mixed model. The model takes the form :
model1 <-gamm4(O3~s(X,Y,bs="tp",k=10)+wd+s(date,bs="cc",k=100)+district,data=mydata,family= gaussian(link ="log" ), random=~(1|date/district), na.action="na.omit", method="REML",gamma=1.4)
And here is the strcture of covariates
> str(mydata)
'data.frame': 7100 obs. of 286 variables:
$ date : Date, format: "2016-01-01" "2016-01-01" "2016-01-01" ...
$ O3 : num 0.0141 0.0149 0.0102 0.0159 0.0186 ...
$ district : Factor w/ 10 levels "bc","bh","dl",..: 1 8 7 8 2 6 4 4 10 2 ...
$ wd : Factor w/ 16 levels "E","ENE","ESE",..: 13 13 13 13 13 2 9 9 11 13 ...
$ X : num 0.389 0.365 1 0.44 0.892 ...
$ Y : num 0.311 0.204 0.426 0.223 0.162 ...
I am stuck on an error in R: 'names' attribute [1] must be the same length as the vector [0].
I try to find where the problem is by delete the term of "s(date,bs="cc",k=100)" from the fomular and it could work well. It seems like there is something wrong with date field.
I'm not exactly sure how to fix this problem. Any advice would be greatly
appreciated!
Jiawei Wang
���� Outlook<http://aka.ms/weboutlook>
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