# scattersplot: Exploratory scatter plots In npsp: Nonparametric Spatial Statistics

 scattersplot R Documentation

## Exploratory scatter plots

### Description

Draws (in a 2 by 2 layout) the following plots: a scatter plot with a color scale, the scatter plots of the response against the (first two) coordinates and the histogram of the response values.

### Usage

``````scattersplot(x, ...)

## Default S3 method:
scattersplot(
x,
z,
main,
xlab,
ylab,
zlab,
col = hot.colors(128),
lowess = TRUE,
density = FALSE,
omd = c(0.05, 0.95, 0.01, 0.95),
...
)

## S3 method for class 'SpatialPointsDataFrame'
scattersplot(
x,
data.ind = 1,
main,
xlab,
ylab,
zlab,
col = hot.colors(128),
lowess = TRUE,
density = FALSE,
omd = c(0.05, 0.95, 0.01, 0.95),
...
)
``````

### Arguments

 `x` object used to select a method. `...` additional graphical parameters (to be passed to `spoints`). `z` vector of data (response variable). `main` an overall title for the plot. `xlab` a title for the axis corresponding to the first coordinate. `ylab` a title for the axis corresponding to the second coordinate. `zlab` a title for the axis corresponding to the response. `col` color table used to set up the color scale (see `spoints`). `lowess` logical. If `TRUE`, a `lowess` smooth is added to the plots of the response against the coordinates. `density` logical. If `TRUE`, a kernel `density` estimate is added to the histogram. `omd` a vector of the form `c(x1, x2, y1, y2)` giving the region inside outer margins in normalized device coordinates (i.e. fractions of the device region). `data.ind` integer (or character) with the index (or name) of the data component.

### Details

Standard generic function with a default method, in which argument `x` is a matrix with the spatial coordinates (each row is a point).

`scattersplot.SpatialPointsDataFrame` sets default values for some of the arguments from attributes of the object `x` (if present; see e.g. `precipitation`).

### Value

No return value, called for side effects (generate the plot).

`splot`, `spoints`, `lowess`, `density`