CreateTestData: Create Test Data Points

In ZahraSajjad/ElasticMap: Elastic Map Fitting

Description

This function creates test data point by use of uniform distribution and dispersion, and then transform by the rotation matrix along coordinate axes.

Usage

CreateTestData(dims, N, disper, angles)

Arguments

dims	dimension of data points
N	Number of data points
disper	dispersion vector for each dimension
angles	angles vector for each dimension

Value

dims-by-N matrix with N data points and dims coordinates for each point (each column is one data point)

Author(s)

Zahra Rezaei

Examples

dims <- 100  # dimension of data points
N <- 5000     # Number of data points

# Define dispersion of data points
# disper is the vector with size dims.
# for each dimension we define different dispersion.
# we can either same amount of dispersion for each dimension.

disper1 <- rep(0.2,dims)
disper2 <- c(rep(0.2,30),rep(-0.2,40),rep(0.3,30))

# Define angles of data points
# angles is the vector of degrees with size dims
# angles vector creates transformation matrix
# definition of angles has same condition as dispersion.

angles1 <- rep(30,dims)
angles2 <- c(rep(30,30),rep(45,40),rep(-15,30))


data1 <- CreateTestData(dims, N, disper1, angles1)
data2 <- CreateTestData(dims, N, disper2, angles2)

ZahraSajjad/ElasticMap documentation built on July 26, 2020, 12:38 a.m.