QFASA-package |
QFASA: A package for Quantitative Fatty Acid Signature Analysis |
AIT.dist |
Returns the distance between two compositional vectors using Aitchison's distance measure. |
AIT.more |
Used to provide additional information on various model components evaluated at the optimal solution i.e. using the QFASA diet estimates and Aitchison distance measure. |
AIT.obj |
Used in 'solnp()' as the objective function to be minimized when Aitchison distance measure is chosen. |
CC |
Fatty acid calibration coefficients. |
chisq.dist |
Returns the distance between two compositional vectors using the chi-square distance. |
CS.more |
Used to provide additional information on various model components evaluated at the optimal solution i.e. using the QFASA diet estimates and chi-square distance measure. |
CS.obj |
Used in 'solnp()' as the objective function to be minimized when chi-square distance measure is chosen. Unlike AIT.obj and KL.obj, does not require modifying zeros. |
FAset |
List of fatty acids to be used for modelling. |
KL.dist |
Returns the distance between two compositional vectors using Kullback-Leibler distance measure. |
KL.more |
Used to provide additional information on various model components evaluated at the optimal solution i.e. using the QFASA diet estimates and Kullback-Leibler distance measure. |
KL.obj |
Used in 'solnp()' as the objective function to be minimized when Kullback-Leibler distance measure is chosen. |
mean.geometric |
Returns the geometric mean of a compositional vector |
MEANmeth |
Returns the multivariate mean FA signature of each prey group entered into the QFASA model. Result can be passed to prey.mat in 'p.QFASA()'. |
multiplot |
Multiplot |
p.QFASA |
Computes the diet estimate for each predator in seal.mat using either the Kullback-Leibler Distance (KL), the Aitchison Distance (AIT) or the Chi-Square Distance (CS). |
predatorFAs |
Predator fatty acid signatures. Each predator signature is a row with fatty acid proportions in columns. |
preyFAs |
Prey fatty acid signatures. Each prey signature is a row with fatty acid proportions in columns. |
QFASA |
QFASA: A package for Quantitative Fatty Acid Signature Analysis |
QFASA.const.eqn |
Returns 'sum(alpha)' and used in 'solnp'. |