GPoM (version 1.0)

visuEq: visuEq : Displays the model Equations

Description

Displays the model equations for a polynomial model which description is provided as a matrix K, each column corresponding to an equation, each equation being corresponding to a list of terms following a convention given in `poLabs`.

Usage

visuEq(nVar, dMax, K, substit = 0, approx = FALSE)

Arguments

nVar

The number of variables

dMax

The maximum degree allowed for the polynomial

K

is the model: each column corresponds to one equation which organisation is following the convention given by function poLabs which requires the definition of the model dimension nVar (i.e. the number of variables) and the maximum polynomial degree dMax allowed.

substit

applies subtitutions: for substit = 0 (default value), variables are chosen as X1, X2, ... for substit = 1, variables X1, X2, ... are replaces by x,y,z, ... for substit = 2, the codes provides a LaTex-like formulation of the model

approx

number of digits to be used: for approx = FALSE (default value) digits are edited with double precision for approx = TRUE, only the minimum number of digits is edited (in order to have all the terms different from 0) for approx = 1, 2, etc. then respectively 1, 2, etc. digits are added to the minimum number of digits corresponding to approx = TRUE.

Examples

# NOT RUN {
#EQUATIONS VISUALISATION
# number of variables:
nVar <- 3
# maximum polynomial degree:
dMax <- 2
# polynomial organization:
poLabs(nVar,dMax)
# model construction
KL = matrix(0, ncol = 3, nrow = 10)
KL[1,1] <- KL[2,2] <- 1
KL[4,1] <- -1
KL[5,3] <- -0.123456789
# Equations visualisation:
# (a) by default, variables names X1, X2, X3 are used
visuEq(nVar, dMax, KL)
# (b) for susbstit=1, variables names x, y, y are used instead
visuEq(nVar, dMax, KL, approx = TRUE, substit=1)
# (c) the name of the variables can also be chosen manualy
visuEq(nVar, dMax, KL, approx = 3, substit=c('U', 'V', 'W'))

# A canonical model can be provided as a single vector
polyTerms <- c(0.2,0,-1,0.5,0,0,0,0,0,0)
visuEq(3,2,KL)

# }