| 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] |
| AgivenF | Annual value given Future value (Engineering Economics) |
| AgivenFcont | Annual value given Future value [continuous] (Engineering... |
| AgivenG | Annual value given Gradient value (Engineering Economics) |
| AgivenP | Annual value given Present value (Engineering Economics) |
| AgivenPcont | Annual value given Present value [continuous] (Engineering... |
| air_stripper | Design of Packed Column Air Strippers |
| 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... |
| atand | Inverse tangent (in degrees) [GNU Octave/MATLAB compatible] |
| benefitcost | Benefit-Cost Ratio (Engineering Economics) |
| c_composite_CN | Composite CN (Curve Number) with Connected Impervious Area |
| colebrook | Accurately calculate the Colebrook-White equation to obtain... |
| CompIntCharg | Compound Interest Charged (Engineering Economics) |
| CompIntPaid | Compound Interest Paid (Engineering Economics) |
| concr_mix_lightweight_strength | Concrete Mix Design for Structural Lightweight Concrete |
| concr_mix_normal_strength | Concrete Mix Design for Normal Strength (Normal-weight)... |
| construction_decimal | Construction Decimal |
| construction_decimal_eng | Construction Decimal Engineering (LibreCAD Style) |
| construction_fraction | Construction Fraction |
| 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) |
| density_water | Density of Saturated Liquid Water |
| dyn_visc_water | Absolute or Dynamic Viscosity for Liquid Water |
| EffInt | Effective Interest rate (Engineering Economics) |
| engr_survey | Conversion of Engineering Survey Measurements to Decimal... |
| engr_survey2 | Calculate the Distance between Engineering Survey Points |
| engr_survey3 | Calculate the Distance between Engineering Survey Points... |
| engr_survey4 | Calculate the Station Distance between Engineering Survey... |
| engr_survey_batch | Conversion of Engineering Survey Measurements to Decimal... |
| engr_survey_reverse | Conversion of Latitude/Longitude Coordinates to Engineering... |
| f1 | Laminar Flow Equation |
| f2 | Moody Equation |
| f3 | Romeo, et. al. Equation |
| f4 | Žarko Ćojbašića and Dejan Brkić Equation |
| f5 | Colebrook-White Equation |
| f6 | Swamee-Jaine Equation |
| f7 | Zigrang-Sylvester Equation |
| f8 | Vatankhah Equation |
| FgivenA | Future value given Annual value (Engineering Economics) |
| FgivenAcont | Future value given Annual value [continuous] (Engineering... |
| FgivenP | Future value given Present value (Engineering Economics) |
| FgivenPcont | Future value given Present value [continuous] (Engineering... |
| floor_division | Floor Division (Python compatible) |
| fractdiff | Fractional Differences (GNU Octave/MATLAB compatible) |
| frac_to_numeric | Fraction (or Mixed number) to a Decimal (Numeric Vector) |
| grapes-inorder-grapes | IN ORDER for Character and Numeric Vectors |
| grapes-notchin-grapes | Not CHIN or IN for Character and Numeric Vectors |
| grapes-qsin-grapes | Quick Search |
| iemisc | iemisc: Irucka Embry's miscellaneous functions |
| igivenICPn | Simple Interest rate given Interest Charged, Number of years,... |
| igivenPFn | Interest rate given Future value, Number of periods, and... |
| iscolumn | Column Vector (GNU Octave/MATLAB compatible) |
| isrow | Row Vector (GNU Octave/MATLAB compatible) |
| kin_visc_water | Kinematic Viscosity for liquid Water |
| lat_long2state | United States of America (USA) State Identification Using... |
| lat_long2utm | Conversion of Latitude/Longitude to UTM Coordinates |
| length_octave | Length of R objects (GNU Octave/MATLAB compatible) |
| lookupQT | Hash Table/Dictionary Lookup These functions were originally... |
| Manningcirc | Circular Cross-section Using the Gauckler-Manning-Strickler... |
| Manningcircy | Circular Cross-section Using the Gauckler-Manning-Strickler... |
| Manningpara | Parabolic cross-section for the Gauckler-Manning-Strickler... |
| Manningrect | Rectangular cross-section for the Gauckler-Manning-Strickler... |
| Manningtrap | Trapezoidal cross-section for the Gauckler-Manning-Strickler... |
| Manningtrap_critical | Trapezoidal cross-section for the Gauckler-Manning-Strickler... |
| Manningtri | Triangular cross-section for the Gauckler-Manning-Strickler... |
| maxmre | Maximum Mean relative error (MAXRE) |
| Mod_octave | Modulus Operation (GNU Octave/MATLAB compatible) |
| mortality_rate | Mortality Rate |
| mortality_rate_pct | Mortality Rate Percent |
| mre | Mean relative error (MRE) |
| 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... |
| ndims | Number of dimensions in an Array (GNU Octave/MATLAB... |
| ngivenPFi | To Find i Given F, n, and P (Engineering Economics) |
| numel | Number of elements (GNU Octave/MATLAB compatible) |
| PgivenA | Present value given Annual value (Engineering Economics) |
| PgivenA1 | Present value for geometric gradient series (Engineering... |
| PgivenAcont | Present value given Annual value [continuous] (Engineering... |
| PgivenF | Present value given Future value (Engineering Economics) |
| PgivenFcont | Present value given Future value [continuous] (Engineering... |
| PgivenFivary | "Present equivalent of a series of future cash flows subject... |
| PgivenG | Present value given Gradient value (Engineering Economics) |
| polygon_area | Polygon Area (using the Shoelace Formula) |
| project_midpoint | Calculate the midpoint between two coordinates (KY and TN) |
| prop_mortality_ratio | Proportional Mortality Ratio |
| prop_solver | Proportion Solver |
| rain_garden_driveway | Rain Garden Sizing for Driveways |
| ranges | Sample range |
| rational_formula | Modified Rational Method Equation |
| Re1 | Calculating the Reynolds Number 1 |
| Re2 | Calculating the Reynolds Number 2 |
| Re3 | Calculating the Reynolds Number 3 |
| Re4 | Calculating the Reynolds Number 4 |
| reduce_single_digit | Reduce an Integer, a Date (Time), or a Number (with or... |
| relerror | Relative error |
| Rem | Remainder After Division (GNU Octave/MATLAB compatible) |
| righttri | Right triangle calculations |
| rms | Root-mean-square |
| sat_vapor_pressure | Saturation Vapor Pressure for Water |
| sat_vapor_pressure_ice | Saturation Vapor Pressure for Ice |
| sec | Secant (in radians) |
| secd | Secant (in degrees) [GNU Octave/MATLAB compatible] |
| secprop | Section Properties Calculator [GNU Octave/MATLAB] |
| sgm | Geometric mean |
| shm | Harmonic mean |
| SimpIntCharg | Simple Interest Charged (Engineering Economics) |
| SimpIntPaid | Simple Interest Paid (Engineering Economics) |
| sind | Sine (in degrees) [GNU Octave/MATLAB compatible] |
| size | Size of R objects (GNU Octave/MATLAB compatible) |
| sp_gravity | Specific Volume |
| splitcomma | Split Comma |
| splitremove | Split Remove |
| sp_volume | Specific Volume |
| surface_area | Calculate the Total Surface Area of Linear Surfaces |
| surf_tens_water | Water Surface Tension for Liquid Water |
| tand | Tangent (in degrees) [GNU Octave/MATLAB compatible] |
| uc_composite_CN | Composite CN (Curve Number) with Unconnected Impervious Area |
| unit_wt | Unit Weight or Specific Weight |
| volsphere | Sphere volume |
| weighted_C | Calculate the Weighted C factor |
| weighted_CN | Calculate the Weighted CN (Curve Number) |
