![[R logo]](../../../doc/html/Rlogo.svg)
![[Up]](../../../doc/html/left.jpg)
![[Top]](../../../doc/html/up.jpg)
| acosd | Inverse cosine (in degrees) [GNU Octave/MATLAB compatible] |
| acotd | Inverse cotangent (in degrees) [GNU Octave/MATLAB compatible] |
| acscd | Inverse cosecant (in degrees) [GNU Octave/MATLAB compatible] |
| AF | Annual value given Future value (Engineering Economics) |
| AgivenF | Annual value given Future value (Engineering Economics) |
| AgivenFcont | Annual value given Future value [continuous] (Engineering Economics) |
| AgivenG | Annual value given Gradient value (Engineering Economics) |
| AgivenP | Annual value given Present value (Engineering Economics) |
| AgivenPcont | Annual value given Present value [continuous] (Engineering Economics) |
| AP | Annual value given Present value (Engineering Economics) |
| approxerror | Approximate error |
| asecd | Inverse secant (in degrees) [GNU Octave/MATLAB compatible] |
| asind | Inverse sine (in degrees) [GNU Octave/MATLAB compatible] |
| atan2d | "Two-argument arc-tangent" (in degrees) [GNU Octave/MATLAB compatible] |
| atand | Inverse tangent (in degrees) [GNU Octave/MATLAB compatible] |
| benefitcost | Benefit-Cost Ratio (Engineering Economics) |
| CompIntPaid | Compound Interest Paid (Engineering Economics) |
| cosd | Cosine (in degrees) [GNU Octave/MATLAB compatible] |
| cotd | Cotangent (in degrees) [GNU Octave/MATLAB compatible] |
| cscd | Cosecant (in degrees) [GNU Octave/MATLAB compatible] |
| cv | Coefficient of variation (CV) |
| EffInt | Effective Interest rate (Engineering Economics) |
| FA | Future value given Annual value (Engineering Economics) |
| FgivenA | Future value given Annual value (Engineering Economics) |
| FgivenAcont | Future value given Annual value [continuous] (Engineering Economics) |
| FgivenP | Future value given Present value (Engineering Economics) |
| FgivenPcont | Future value given Present value [continuous] (Engineering Economics) |
| FP | Future value given Present value (Engineering Economics) |
| iemisc | iemisc: Irucka Embry's miscellaneous functions |
| igivenPFn | Interest rate given Future value, Number of periods, and Present value (Engineering Economics) |
| length_octave | Length of R objects (GNU Octave/MATLAB compatible) |
| Manningcirc | Circular cross-section using the Gauckler-Manning-Strickler equation |
| Manningcircy | Circular cross-section using the Gauckler-Manning-Strickler equation |
| Manningpara | Parabolic cross-section for the Gauckler-Manning-Strickler equation |
| Manningrect | Rectangular cross-section for the Gauckler-Manning-Strickler equation |
| Manningtrap | Trapezoidal cross-section for the Gauckler-Manning-Strickler equation |
| Manningtri | Triangular cross-section for the Gauckler-Manning-Strickler equation |
| n | Manning's n for natural channels |
| na.interp1 | na.interp1 |
| nc1 | Horton method for composite Manning's n |
| nc2 | Einstein and Banks method for composite Manning's n |
| nc3 | Lotter method for composite Manning's n |
| nc4 | Krishnamurthy and Christensen method for composite Manning's n |
| ngivenPFi | To Find i Given F, n, and P (Engineering Economics) |
| numel | Number of elements (GNU Octave/MATLAB compatible) |
| PA | Present value given Annual value (Engineering Economics) |
| PF | Present value given Future value (Engineering Economics) |
| PgivenA | Present value given Annual value (Engineering Economics) |
| PgivenA1 | Present value for geometric gradient series (Engineering Economics) |
| PgivenAcont | Present value given Annual value [continuous] (Engineering Economics) |
| PgivenF | Present value given Future value (Engineering Economics) |
| PgivenFcont | Present value given Future value [continuous] (Engineering Economics) |
| PgivenFivary | "Present equivalent of a series of future cash flows subject to varying interest rates" (Engineering Economics) |
| PgivenG | Present value given Gradient value (Engineering Economics) |
| ranges | Sample range |
| relerror | Relative error |
| righttri | Right triangle calculations |
| rms | Root-mean-square |
| secd | Secant (in degrees) [GNU Octave/MATLAB compatible] |
| sgm | Geometric mean |
| shm | Harmonic mean |
| SimpIntPaid | Simple Interest Paid (Engineering Economics) |
| sind | Sine (in degrees) [GNU Octave/MATLAB compatible] |
| size | Size of R objects (GNU Octave/MATLAB compatible) |
| tand | Tangent (in degrees) [GNU Octave/MATLAB compatible] |
| volsphere | Sphere volume |