apollo_expandLoop function

Expands loops in a function or expression

Expands loops replacing the index by its value. It also evaluates paste and paste0, and removes get.

apollo_expandLoop(f, apollo_inputs, validate = TRUE)

Arguments

• f: function (usually apollo_probabilities) inside which the name of the components are inserted.
• apollo_inputs: List grouping most common inputs. Created by function apollo_validateInputs .
• validate: Logical. If TRUE, the new function will be validated before being returned

Returns

A function or an expression (same type as input f)

Details

For example, the expression for(j in 1:3) V[[paste0('alt',j)]] = b1*get(paste0('x',j)) + b2*X[,j]

would be expanded into:

V[[alt1]] = b1*x1 + b2*X[,1] V[[alt2]] = b1*x2 + b2*X[,2] V[[alt3]] =b1*x3 + b2*X[,3]