# s.traject: Trajectory Plot In ade4: Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences

 s.traject R Documentation

## Trajectory Plot

### Description

performs the scatter diagram with trajectories.

### Usage

```s.traject(dfxy, fac = factor(rep(1, nrow(dfxy))),
ord = (1:length(fac)),  xax = 1, yax = 2, label = levels(fac),
clabel = 1, cpoint = 1, pch = 20, xlim = NULL, ylim = NULL,
grid = TRUE, addaxes = TRUE, edge = TRUE, origin = c(0,0),
include.origin = TRUE, sub = "", csub = 1, possub = "bottomleft",
cgrid = 1, pixmap = NULL, contour = NULL, area = NULL, add.plot = FALSE)
```

### Arguments

 `dfxy` a data frame containing two columns for the axes `fac` a factor partioning the rows of the data frame in classes `ord` a vector of length equal to fac. The trajectory is drawn in an ascending order of the ord values `xax` the column number for the x-axis `yax` the column number for the y-axis `label` a vector of strings of characters for the point labels `clabel` if not NULL, a character size for the labels, used with `par("cex")*clabel` `cpoint` a character size for plotting the points, used with `par("cex")*cpoint`. If zero, no points are drawn `pch` if `cpoint` > 0, an integer specifying the symbol or the single character to be used in plotting points `xlim` the ranges to be encompassed by the x, if NULL they are computed `ylim` the ranges to be encompassed by the y, if NULL they are computed `grid` a logical value indicating whether a grid in the background of the plot should be drawn `addaxes` a logical value indicating whether the axes should be plotted `edge` if TRUE the arrows are plotted, otherwhise only the segments `origin` the fixed point in the graph space, for example c(0,0) the origin axes `include.origin` a logical value indicating whether the point "origin" should be belonged to the graph space `sub` a string of characters to be inserted as legend `csub` a character size for the legend, used with `par("cex")*csub` `possub` a string of characters indicating the sub-title position ("topleft", "topright", "bottomleft", "bottomright") `cgrid` a character size, parameter used with `par("cex")*cgrid` to indicate the mesh of the grid `pixmap` aan object 'pixmap' displayed in the map background `contour` a data frame with 4 columns to plot the contour of the map : each row gives a segment (x1,y1,x2,y2) `area` a data frame of class 'area' to plot a set of surface units in contour `add.plot` if TRUE uses the current graphics window

### Value

The matched call.

Daniel Chessel

### Examples

```if(!adegraphicsLoaded()) {
rw <- function(a) {
x <- 0
for(i in 1:49) x <- c(x, x[length(x)] + runif(1, -1, 1))
x
}
y <- unlist(lapply(1:5, rw))
x <- unlist(lapply(1:5, rw))
z <- gl(5, 50)
s.traject(data.frame(x, y), z, edge = FALSE)
}```

ade4 documentation built on Nov. 2, 2022, 1:07 a.m.