# DepthProc

*DepthProc* project consist of a set of statistical procedures
based on so called statistical depth functions. The project involves
free available R package and its description.

### Versions

#### CRAN release version

## Installation

*DepthProc* is avaiable on CRAN:

`install.packages("DepthProc")`

You can also install it from GitHub with *devtools*
package:

```
library(devtools)
install_github("zzawadz/DepthProc")
```

## Main features:

### Speed and multithreading

Most of the code is written in C++ for additional efficiency. We also
use OpenMP to speedup computations with multithreading:

```
library(DepthProc)
set.seed(123)
d <- 10
x <- mvrnorm(1000, rep(0, d), diag(d))
# Default - utilize as many threads as possible
system.time(depth(x, x, method = "LP"))
#> user system elapsed
#> 0.351 0.000 0.090
# Only single thread - 4 times slower:
system.time(depth(x, x, method = "LP", threads = 1))
#> user system elapsed
#> 0.208 0.000 0.208
# Two threads - 2 times slower:
system.time(depth(x, x, method = "LP", threads = 2))
#> user system elapsed
#> 0.201 0.000 0.103
```

## Available depth functions

```
x <- mvrnorm(100, c(0, 0), diag(2))
depthEuclid(x, x)
depthMah(x, x)
depthLP(x, x)
depthProjection(x, x)
depthLocal(x, x)
depthTukey(x, x)
## Base function to call others:
depth(x, x, method = "Projection")
depth(x, x, method = "Local", depth_params1 = list(method = "LP"))
## Get median
depthMedian(x,
depth_params = list(
method = "Local",
depth_params1 = list(method = "LP")))
```

## Basic plots

### Contour plot

```
library(mvtnorm)
y <- rmvt(n = 200, sigma = diag(2), df = 4, delta = c(3, 5))
depthContour(y, points = TRUE, graph_params = list(lwd = 2))
```

### Perspective plot

`depthPersp(y, depth_params = list(method = "Mahalanobis"))`

## Functional depths:

There are two functional depths implemented - modified band depth
(MBD), and Frainman-Muniz depth (FM):

```
x <- matrix(rnorm(60), nc = 20)
fncDepth(x, method = "MBD")
fncDepth(x, method = "FM", dep1d = "Mahalanobis")
#> Warning in dep1d_params$u <- u[, i]: Coercing LHS to a list
```

### Functional BoxPlot

```
x <- matrix(rnorm(2000), ncol = 100)
fncBoxPlot(x, bands = c(0, 0.5, 1), method = "FM")
```