| adjdata | Boundary Data Adjustment of A Polygon |
| areaGE | Area Calculation for the Gielis Curve Within [0, 2pi) |
| areaovate | Area Calculation for an Ovate Polygon |
| bambooleaves | Leaf Boundary Data of _Phyllostachys incarnata_ T. H. Wen (Poaceae: Bambusoideae) |
| bilat | Measure of the Extent of Bilateral Symmetry of A Polygon |
| biogeom | Biological Geometries |
| curveEPE | Drawing the Preston Curve Produced by the the Explicit Preston Equation |
| curveETE | Drawing the Troscianko Curve Produced by the Explicit Troscianko Equation |
| curveGE | Drawing the Gielis Curve |
| curveNRGE | Drawing the Egg Shape Predicted by the Narushin-Romanov-Griffin Equation |
| curveovate | Drawing the Ovate Leaf-Shape Curve |
| DEPE | Calculation of the First-Order Derivative of the Explicit Preston Equation |
| DETE | Calculation of the First-Order Derivative of the Explicit Troscianko Equation |
| DNRGE | Calculation of the First-Order Derivative of the Narushin-Romanov-Griffin Equation |
| DSGE | Calculation of the First-Order Derivative of the Simplified Gielis Equation |
| eggs | Egg Boundary Data of Nine Species of Birds |
| EPE | Calculation of the Ordinate For an Arbitrary Point on the Preston Curve in the Plane |
| ETE | Calculation of the Ordinate For an Arbitrary Point on the Troscianko Curve in the Plane |
| fitEPE | Data-Fitting Function for the Explicit Preston Equation |
| fitETE | Data-Fitting Function for the Explicit Troscianko Equation |
| fitGE | Data-Fitting Function for the Gielis Equation |
| fitLorenz | Data-Fitting Function for the Rotated and Right-Shifted Lorenz Curve |
| fitNRGE | Parameter Estimation for the Narushin-Romanov-Griffin Equation |
| fitovate | Data-Fitting Function for the Ovate Leaf-Shape Equation |
| fitsigmoid | Data-Fitting Function for the Sigmoid Growth Equation |
| fitSuper | Data-Fitting Function for the Superellipse Equation |
| fracdim | Calculation of Fractal Dimension of Lef Veins Based on the Box-Counting Method |
| GE | Calculation of the Polar Radius of the Gielis Curve |
| ginkgoseed | Boundary Data of the Side Projections of _Ginkgo biloba_ Seeds |
| kp | Boundary Data of the Vertical Projections of _Koelreuteria paniculata_ Fruit |
| LeafSizeDist | Leaf size distribution of _Shibataea chinensis_ |
| lmPE | Parameter Estimation for the Todd-Smart Equation |
| lmTE | Parameter Estimation for the Troscianko Equation |
| MbetaE | Modified Beta Equation |
| MBriereE | Modified Briere Equation |
| MLRFE | Modified Lobry-Rosso-Flandrois (LRF) Equation |
| MPerformanceE | Modified Performance Equation |
| Neocinnamomum | Leaf Boundary Data of Seven Species of _Neocinnamomum_ |
| NRGE | The Narushin-Romanov-Griffin Equation (NRGE) |
| PE | Calculation of the Abscissa, Ordinate and Distance From the Origin For an Arbitrary Point on the Preston Curve |
| SarabiaE | Sarabia Equation |
| SCSE | Sarabia-Castillo-Slottje Equation (SCSE) |
| SHE | Sitthiyot-Holasut Equation |
| shoots | Height Growth Data of Bamboo Shoots |
| sigmoid | Sigmoid Growth Equation |
| starfish | Boundary Data of Eight Sea Stars |
| SurfaceAreaEPE | Calculation of the Surface Area of An Egg Based on the Explicit Preston Equation |
| SurfaceAreaETE | Calculation of the Surface Area of An Egg Based on the Explicit Troscianko Equation |
| SurfaceAreaNRGE | Calculation of the Surface Area of An Egg Based on the Narushin-Romanov-Griffin Equation |
| SurfaceAreaSGE | Calculation of the Surface Area of An Egg Based on the Simplified Gielis Equation |
| TE | The Troscianko Equation (TE) |
| TGE | Calculation of the Polar Radius of the Twin Gielis Curve |
| TSE | The Todd-Smart Equation (TSE) |
| veins | Leaf Vein Data of _Michelia compressa_ |
| VolumeEPE | Calculation of the Volume of An Egg Based on the Explicit Preston Equation |
| VolumeETE | Calculation of the Volume of An Egg Based on the Explicit Troscianko Equation |
| VolumeNRGE | Calculation of the Volume of An Egg Based on the Narushin-Romanov-Griffin Equation |
| VolumeSGE | Calculation of the Volume of An Egg Based on the Simplified Gielis Equation |
| whitespruce | Planar Coordinates of _Picea glauca_ Tree Rings |