# GIplot: Gaussian Interval Plot (GIplot) In GIplot: Gaussian Interval Plot (GIplot)

## Description

The Gaussian Interval Plot (GIplot) is a pictorial representation of the mean and the standard deviation of a quantitative variable. It also flags potential outliers (together with their frequencies) that are c standard deviations away from the mean.

## Usage

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30``` ```GIplot(x, ...) ## Default S3 method: GIplot( x, ..., horizontal = TRUE, names = c(), add = FALSE, at = 0, valueOfc = 2.33, axisLabel = "", main = paste("GI Plot of ", axisLabel), spsize = T ) ## S3 method for class 'formula' GIplot( formula, dataset = NULL, horizontal = TRUE, names = c(), add = FALSE, at = 0, valueOfc = 2.33, axisLabel = "", main = paste("GIPlot of ", axisLabel), spsize = T, ... ) ```

## Arguments

 `x` a numeric vector or a single list or a data frame `...` more numeric vectors for the GIplot `horizontal` Logical.TRUE (Default) for horizontal GIPlot and FALSE for vertical. `names` names of the sub-groups for which separate GIPlots are drawn on the same scale. `add` Logical. TRUE adds a new GIplot to the existing plot. FALSE (Default) will create a new plot. `at` If add = TRUE, the position at which the new GIplot should be placed. `valueOfc` the multiplier of sd to determine extreme bounds beyond which values are flagged as outliers. To flag alpha proportion of data in each tail use c = qnorm(1-alpha). When alpha = 0.01, c = qnorm(0.99) = 2.32 `axisLabel` label for the axis `main` title of the GIplot. `spsize` Logical. TRUE (Default) adds a sample size to the GIplot. `formula` a formula, such as x ~ grp, where x is a numeric vector of data values to be split into groups according to the grouping variable grp (usually a factor). Note that ~ g1 + g2 is equivalent to g1:g2. `dataset` a data.frame from which the variables in formula should be taken.

## Value

displays the GIplot

## Examples

 ```1 2 3 4 5 6 7``` ``` #For vectors x<- rnorm(90,30,10) GIplot(x) #For Formula Class groupA <- rep(c(1,2,3),30) GIplot(x~groupA) ```

GIplot documentation built on Aug. 2, 2021, 5:07 p.m.