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fn_xseq {Morefi}

20 May 2024

fn_xseq.Rmd

Customizes the summary of fitted regression

Description

The function generates a data frame with a sequence for independent variable (including minimum and maximum values) and selects it according to the model.

The data frame should have the same column name as the dependent variable used in the fitted model.

Inside the function, the appropriate sequence is selected in function of model the mean Ymean, lower Ymin, and upper Ymax CI95% are stored in a table Table_Y

The function requires defining:

  • modelos: A list that defines the variables that will be taken into account for the model.
  • List_x_seq: A list to store the sequence of the independent variable considered for the ith fitted model.
  • i: An integer value indicating the regression to be analyzed.

The function returns a one-column data frame with the sequence selected.

seealso: seq() from base (version 4.3.0)

fn_xseq

The function is included in the Morefi package Morphological Relationships Fitted by Robust Regression.

The function is detailed below.

fn_xseq <- function(modelos,List_x_seq, i) {
  if (modelos[[i]][1]== 1) {
    xseq <- List_x_seq[[1]]
  } else {
      if (modelos[[i]][1]== 2) {
             xseq <- List_x_seq[[2]]
      } else {
            if (modelos[[i]][1]== 4) {
                  xseq <- List_x_seq[[3]]
            } else {
                  xseq <- List_x_seq[[4]]
      }  # End if                  
    }  # End if
  }  # End if
  xseq <- data.frame(x1=xseq)
} # End fn

Examples

Do not execute, it’s just a syntax example. 

xseq <- fn_xseq(modelos,List_x_seq, i)