R programming For graphics

Question

How do I write the following as the legend at the top left of a graph?

(\gp_1,\gp_2)=(8,7)

Here, 8 and 7 come from the value of the variables gp1 and gp2, assigned in the program.

Answer 1

Use the bquote to write the expression and place your variables gp1 and gp2 within .():

gp1 <- 7
gp2 <- 8
plot(1,1)
legend("topleft", legend=bquote((gp[1]*","*gp[2])==(.(gp1)*","*.(gp2))))