Error: expecting a one sided formula, a function, or a function name.

[him1532]

I have a data that looks like this with 10 rows

스	ld	kt	ts	ss	ss1	ss2	ss3
1	5	1	165	88	54	57	110
2	5	2	167	91	65	58	110
3	6	1	183	107	50	69	110

if I do following

data%>%filter(kt==1)%>%rename(group=스) %>% mutate_at(vars(-group),scales::rescale())

I get an error

Error: expecting a one sided formula, a function, or a function name.

If I don't do "scales::rescale()" I get an error saying

Error in check_dot_cols(.vars, .cols) : object 'rescale' not found

I've tried

data%>%filter(kt==1)%>%rename(group=스) %>% mutate_each(funs(rescale),-group)

and I get

Error in is_character(x) : object 'group' not found

can you help?

[him1532]

when I tried the following all the values are 0.5

data_M=data%>%filter(kt==1)%>%rename(group=스) %>% mutate_at(vars(-group),scales::rescale)

one other question I have is how do I use non english font?
I've tried following and it did not display the text correctly.

ggradar(data_M)+theme(text = element_text(size=8,family = "YDIYGO320"))