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R语言数据分析报错解决办法和有用命令(8.3-8.10)_boundary (singular) fit: see help('issingular')

boundary (singular) fit: see help('issingular')

报错

pls 报错:
是否混淆pls,plsda, gplsda等,每个model所需输入不同

lmer:
output 和input可以不在一个data,但行数必须相同

boundary (singular) fit: see ?isSingular fixed-effect model matrix is rank deficient so dropping 1 column / coefficient:

check every adjust variable

anova.mer Mod(mod_null, mod_eins) : models were not all fitted to the same size of dataset

两个model长度不等,有NA

有用的命令

revalue:df<-df%>%mutate(column=revalue(column,c(“a”=1,”b”=2)))

library(data.table)
univ_name<-setDT(univ0, keep.rownames = TRUE)[]

num[1:600, 1:90] —>类型为numeric
704 obs of 92 variables—>类型为list/data frame

calibration: denoise
eg.找与case的关系 denoise control/更平滑/更趋近于均值

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