Matlab has a set of dot operators, such as `.*`, `./`, `.^`. Each of these operators consists of a dot and a normal algebraic operator. 
I would like to translate these into R:

```
col = round(r0 + (j/k) * lambda .* cos(pi/6))+1;
ro    = 700 - round(s0 - (j/k) * sin(phi)./cos(pi/6))
col = min(col):1:max(col)
ro    = min(ro):1:max(ro)

```

Please help