| 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'. |