rplotlatexmathtype

plot two subscripts on the same line one with prime

I am trying to code using some math type for plotting using expression(paste()),

if I want alpha to have the subscript sub1 I can do:

expression(paste(alpha[sub1]))

if i want to prime the subscript I can do:

expression(paste(alpha[sub1^"'"]))

but i can't figure out how to add another subscript after the sub1, so the subscript reads alpha[sub1'sub2] i.e. sub1'sub2 is all in one line, at the same level.

I tried

expression(paste(alpha[sub1^"'"sub2]))

and 

expression(paste(alpha[sub1^"'"],[sub2]))

It is easy to do without the prime however...

expression(paste(alpha[sub1sub2]))

I think this might be a case for {} but I can't find any examples that work through this. How can i do this with a prime for sub1?

Solution

  • First of all there is no need for paste() here. Secondly, you can use "*" to essentially place values beside each other. Try

    expression(alpha[sub1^"'"*sub2])