Docstrings · DiffEqDevTools.jl

DiffEqDevTools.TestSolution — Type

TestSolution

Base.length — Method

length(simres::ConvergenceSimulation)

Returns the number of simultations in the Convergence Simulation

Base.length — Method

Base.length(tab::ODERKTableau)

Defines the length of a Runge-Kutta method to be the number of stages.

DiffEqDevTools.appxtrue — Method

appxtrue(sol::AbstractODESolution,sol2::AbstractODESolution)

Uses the interpolant from the higher order solution sol2 to approximate errors for sol. If sol2 has no interpolant, only the final error is calculated.

DiffEqDevTools.appxtrue — Method

appxtrue(sol::AbstractODESolution,sol2::TestSolution)

Uses the interpolant from the higher order solution sol2 to approximate errors for sol. If sol2 has no interpolant, only the final error is calculated.

DiffEqDevTools.constructBaker10 — Function

Tom Baker, University of Teeside. Part of RK-Aid http://www.scm.tees.ac.uk/users/u0000251/research/researcht.htm http://www.scm.tees.ac.uk/users/u0000251/j.r.dormand/t.baker/rk10921m/rk10921m

DiffEqDevTools.constructBogakiShampine3 — Function

constructBogakiShampine3()

Constructs the tableau object for the Bogakai-Shampine Order 2/3 method.

DiffEqDevTools.constructBogakiShampine5 — Function

An Efficient Runge-Kutta (4,5) Pair by P.Bogacki and L.F.Shampine Computers and Mathematics with Applications, Vol. 32, No. 6, 1996, pages 15 to 28

DiffEqDevTools.constructButcher6 — Function

Butcher's First Order 6 method

On Runge-Kutta Processes of High Order, by J. C. Butcher, Journal of the Australian Mathematical Society, Vol. 4, (1964), pages 179 to 194

DiffEqDevTools.constructButcher62 — Function

Butcher's Second Order 6 method

On Runge-Kutta Processes of High Order, by J. C. Butcher, Journal of the Australian Mathematical Society, Vol. 4, (1964), pages 179 to 194

DiffEqDevTools.constructButcher63 — Function

Butcher's Third Order 6

On Runge-Kutta Processes of High Order, by J. C. Butcher, Journal of the Australian Mathematical Society, Vol. 4, (1964), pages 179 to 194

DiffEqDevTools.constructCashKarp — Function

constructCashKarp()

Constructs the tableau object for the Cash-Karp Order 4/5 method.

DiffEqDevTools.constructCassity5 — Function

Cassity's Order 5 method

DiffEqDevTools.constructChummund6 — Function

Chummund's First Order 6 method

A three-dimensional family of seven-step Runge-Kutta methods of order 6, by G. M. Chammud (Hammud), Numerical Methods and programming, 2001, Vol.2, 2001, pages 159-166 (Advanced Computing Scientific journal published by the Research Computing Center of the Lomonosov Moscow State Univeristy)

DiffEqDevTools.constructChummund62 — Function

Chummund's Second Order 6 method

DiffEqDevTools.constructClassicVerner6 — Function

EXPLICIT RUNGE-KUTTA METHODS WITH ESTIMATES OF THE LOCAL TRUNCATION ERROR

DiffEqDevTools.constructClassicVerner7 — Function

EXPLICIT RUNGE-KUTTA METHODS WITH ESTIMATES OF THE LOCAL TRUNCATION ERROR

DiffEqDevTools.constructClassicVerner8 — Function

EXPLICIT RUNGE-KUTTA METHODS WITH ESTIMATES OF THE LOCAL TRUNCATION ERROR

DiffEqDevTools.constructCooperVerner8 — Function

Some Explicit Runge-Kutta Methods of High Order, by G. J. Cooper and J. H. Verner, SIAM Journal on Numerical Analysis, Vol. 9, No. 3, (September 1972), pages 389 to 405

DiffEqDevTools.constructCooperVerner82 — Function

Some Explicit Runge-Kutta Methods of High Order, by G. J. Cooper and J. H. Verner, SIAM Journal on Numerical Analysis, Vol. 9, No. 3, (September 1972), pages 389 to 405

DiffEqDevTools.constructCurtis10 — Function

High-order Explicit Runge-Kutta Formulae, Their uses, and Limitations, A.R.Curtis, J. Inst. Maths Applics (1975) 16, 35-55.

DiffEqDevTools.constructCurtis8 — Function

An Eighth Order Runge-Kutta process with Eleven Function Evaluations per Step, by A. R. Curtis, Numerische Mathematik, Vol. 16, No. 3 (1970), pages 268 to 277

DiffEqDevTools.constructDormandLockyerMcCorriganPrince6 — Function

DormandLockyerMcCorriganPrince Order 6 Global Error Estimation

Global Error estimation with Runge-Kutta triples, by J.R.Dormand, M.A.Lockyer, N.E.McCorrigan and P.J.Prince, Computers and Mathematics with Applications, 18 (1989) pages 835-846.

DiffEqDevTools.constructDormandPrince6 — Function

Dormand-Prince Order 5//6 method

P.J. Prince and J. R. Dormand, High order embedded Runge-Kutta formulae, Journal of Computational and Applied Mathematics . 7 (1981), pp. 67-75.

DiffEqDevTools.constructDormandPrince8 — Function

constructDormandPrice8()

Constructs the tableau object for the Dormand-Prince Order 6/8 method.

DiffEqDevTools.constructDormandPrince8_64bit — Function

constructDormandPrice8_64bit()

Constructs the tableau object for the Dormand-Prince Order 6/8 method with the approximated coefficients from the paper. This works until below 64-bit precision.

DiffEqDevTools.constructEnrightVerner7 — Function

The Relative Efficiency of Alternative Defect Control Schemes for High-Order Continuous Runge-Kutta Formulas W. H. Enright SIAM Journal on Numerical Analysis, Vol. 30, No. 5. (Oct., 1993), pp. 1419-1445.

DiffEqDevTools.constructEnrightVerner8 — Function

DiffEqDevTools.constructEuler — Function

Euler's method.

DiffEqDevTools.constructFeagin10 — Function

Feagin10 in Tableau form

DiffEqDevTools.constructFeagin12 — Function

Tableau form of Feagin12

DiffEqDevTools.constructFeagin14 — Function

Tableau form of Feagin14

DiffEqDevTools.constructGL2 — Function

Gauss-Legendre Order 2.

DiffEqDevTools.constructGL4 — Function

Gauss-Legendre Order 4.

DiffEqDevTools.constructGL6 — Function

Gauss-Legendre Order 6.

DiffEqDevTools.constructHairer10 — Function

A Runge-Kutta Method of Order 10, E. Hairer, J. Inst. Maths Applics (1978) 21, 47-59.

DiffEqDevTools.constructHeun — Function

Heun's Order 2 method.

DiffEqDevTools.constructHuta6 — Function

Anton Hutas First Order 6 method

Une amélioration de la méthode de Runge-Kutta-Nyström pour la résolution numérique des équations différentielles du premièr ordre, by Anton Huta, Acta Fac. Nat. Univ. Comenian Math., Vol. 1, pages 201-224 (1956).

DiffEqDevTools.constructHuta62 — Function

Anton Hutas Second Order 6 method

DiffEqDevTools.constructImplicitEuler — Function

Implicit Euler Method

DiffEqDevTools.constructKutta3 — Function

Kutta's Order 3 method.

DiffEqDevTools.constructLawson5 — Function

Lawson's 5th order scheme

An Order Five Runge Kutta Process with Extended Region of Stability, J. Douglas Lawson, Siam Journal on Numerical Analysis, Vol. 3, No. 4, (Dec., 1966) pages 593-597

DiffEqDevTools.constructLawson6 — Function

Lawson's Order 6

An Order 6 Runge-Kutta Process with an Extended Region of Stability, by J. D. Lawson, Siam Journal on Numerical Analysis, Vol. 4, No. 4 (Dec. 1967) pages 620-625.

DiffEqDevTools.constructLobattoIIIA4 — Function

LobattoIIIA Order 4 method

DiffEqDevTools.constructLobattoIIIB2 — Function

LobattoIIIB Order 2 method

DiffEqDevTools.constructLobattoIIIB4 — Function

LobattoIIIB Order 4 method

DiffEqDevTools.constructLobattoIIIC2 — Function

LobattoIIIC Order 2 method

DiffEqDevTools.constructLobattoIIIC4 — Function

LobattoIIIC Order 4 method

DiffEqDevTools.constructLobattoIIICStar2 — Function

LobattoIIIC* Order 2 method

DiffEqDevTools.constructLobattoIIICStar4 — Function

LobattoIIIC* Order 4 method

DiffEqDevTools.constructLobattoIIID2 — Function

LobattoIIID Order 2 method

DiffEqDevTools.constructLobattoIIID4 — Function

LobattoIIID Order 4 method

DiffEqDevTools.constructLutherKonen5 — Function

Luther and Konen's First Order 5 Some Fifth-Order Classical Runge Kutta Formulas, H.A.Luther and H.P.Konen, Siam Review, Vol. 3, No. 7, (Oct., 1965) pages 551-558.

DiffEqDevTools.constructLutherKonen52 — Function

Luther and Konen's Second Order 5 Some Fifth-Order Classical Runge Kutta Formulas, H.A.Luther and H.P.Konen, Siam Review, Vol. 3, No. 7, (Oct., 1965) pages 551-558.

DiffEqDevTools.constructLutherKonen53 — Function

Luther and Konen's Third Order 5 Some Fifth-Order Classical Runge Kutta Formulas, H.A.Luther and H.P.Konen, Siam Review, Vol. 3, No. 7, (Oct., 1965) pages 551-558.

DiffEqDevTools.constructMidpointRule — Function

Order 2 Midpoint Method

DiffEqDevTools.constructMikkawyEisa — Function

Mikkawy-Eisa Order 6

A general four-parameter non-FSAL embedded Runge–Kutta algorithm of orders 6 and 4 in seven stages, by M.E.A. El-Mikkawy and M.M.M. Eisa, Applied Mathematics and Computation, Vol. 143, No. 2, (2003) pages 259 to 267.

DiffEqDevTools.constructOno10 — Function

Ono10

DiffEqDevTools.constructOno12 — Function

On the 25 stage 12th order explicit Runge-Kutta method, by Hiroshi Ono. Transactions of the Japan Society for Industrial and applied Mathematics, Vol. 6, No. 3, (2006) pages 177 to 186

DiffEqDevTools.constructPapakostas6 — Function

Papakostas's Order 6

On Phase-Fitted modified Runge-Kutta Pairs of order 6(5), by Ch. Tsitouras and I. Th. Famelis, International Conference of Numerical Analysis and Applied Mathematics, Crete, (2006)

DiffEqDevTools.constructPapakostasPapaGeorgiou5 — Function

S.N. Papakostas and G. PapaGeorgiou higher error more stable

A Family of Fifth-order Runge-Kutta Pairs, by S.N. Papakostas and G. PapaGeorgiou, Mathematics of Computation,Volume 65, Number 215, July 1996, Pages 1165-1181.

DiffEqDevTools.constructPapakostasPapaGeorgiou52 — Function

S.N. Papakostas and G. PapaGeorgiou less stable lower error Strictly better than DP5

A Family of Fifth-order Runge-Kutta Pairs, by S.N. Papakostas and G. PapaGeorgiou, Mathematics of Computation,Volume 65, Number 215, July 1996, Pages 1165-1181.

DiffEqDevTools.constructRK4 — Function

Classic RK4 method.

DiffEqDevTools.constructRK438Rule — Function

Classic RK4 3/8's rule method.

DiffEqDevTools.constructRKF4 — Function

Runge-Kutta-Fehberg Order 4/3

DiffEqDevTools.constructRKF5 — Function

Runge-Kutta-Fehlberg Order 4/5 method.

DiffEqDevTools.constructRKF8 — Function

constructRKF8()

Constructs the tableau object for the Runge-Kutta-Fehlberg Order 7/8 method.

DiffEqDevTools.constructRadauIA3 — Function

RadauIA Order 3 method

DiffEqDevTools.constructRadauIA5 — Function

RadauIA Order 5 method

DiffEqDevTools.constructRadauIIA3 — Function

RadauIIA Order 3 method

DiffEqDevTools.constructRadauIIA5 — Function

RadauIIA Order 5 method

DiffEqDevTools.constructRalston — Function

Ralston's Order 2 method.

DiffEqDevTools.constructRalston4 — Function

Ralston's Order 4 method with minimum truncation error.

DiffEqDevTools.constructRungeFirst5 — Function

Runge's First Order 5 method

DiffEqDevTools.constructSSPRK104 — Function

Explicit SSP method of order 4 using 10 stages.

DiffEqDevTools.constructSSPRK22 — Function

Explicit SSP method of order 2 using 2 stages.

DiffEqDevTools.constructSSPRK33 — Function

Explicit SSP method of order 3 using 3 stages.

DiffEqDevTools.constructSSPRK43 — Function

Explicit SSP method of order 3 using 4 stages.

DiffEqDevTools.constructSharp9 — Function

Journal of Applied Mathematics & Decision Sciences, 4(2), 183-192 (2000), "High order explicit Runge-Kutta pairs for ephemerides of the Solar System and the Moon".

DiffEqDevTools.constructSharpSmart5 — Function

Explicit Runge-Kutta Pairs with One More Derivative Evaluation than the Minimum, by P.W.Sharp and E.Smart, Siam Journal of Scientific Computing, Vol. 14, No. 2, pages. 338-348, March 1993.

DiffEqDevTools.constructSharpSmart7 — Function

Explicit Runge-Kutta Pairs with One More Derivative Evaluation than the Minimum, by P.W.Sharp and E.Smart, Siam Journal of Scientific Computing, Vol. 14, No. 2, pages. 338-348, March 1993.

DiffEqDevTools.constructSharpVerner6 — Function

Sharp-Verner Order 5/6 method

Completely Imbedded Runge-Kutta Pairs, by P. W. Sharp and J. H. Verner, SIAM Journal on Numerical Analysis, Vol. 31, No. 4. (Aug., 1994), pages. 1169 to 1190.

DiffEqDevTools.constructSharpVerner7 — Function

Completely Imbedded Runge-Kutta Pairs, by P.W.Sharp and J.H.Verner, Siam Journal on Numerical Analysis, Vol.31, No.4. (August 1994) pages 1169-1190.

DiffEqDevTools.constructTanakaKasugaYamashitaYazaki6A — Function

TanakaKasugaYamashitaYazaki Order 6 A

On the Optimization of Some Eight-stage Sixth-order Explicit Runge-Kutta Method, by M. Tanaka, K. Kasuga, S. Yamashita and H. Yazaki, Journal of the Information Processing Society of Japan, Vol. 34, No. 1 (1993), pages 62 to 74.

DiffEqDevTools.constructTanakaKasugaYamashitaYazaki6B — Function

constructTanakaKasugaYamashitaYazaki Order 6 B

DiffEqDevTools.constructTanakaKasugaYamashitaYazaki6C — Function

constructTanakaKasugaYamashitaYazaki Order 6 C

DiffEqDevTools.constructTanakaKasugaYamashitaYazaki6D — Function

constructTanakaKasugaYamashitaYazaki Order 6 D

DiffEqDevTools.constructTanakaYamashitaEfficient7 — Function

On the Optimization of Some Nine-Stage Seventh-order Runge-Kutta Method, by M. Tanaka, S. Muramatsu and S. Yamashita, Information Processing Society of Japan, Vol. 33, No. 12 (1992) pages 1512-1526.

DiffEqDevTools.constructTanakaYamashitaStable7 — Function

On the Optimization of Some Nine-Stage Seventh-order Runge-Kutta Method, by M. Tanaka, S. Muramatsu and S. Yamashita, Information Processing Society of Japan, Vol. 33, No. 12 (1992) pages 1512-1526.

DiffEqDevTools.constructTrapezoidalRule — Function

Order 2 Trapezoidal Rule (LobattoIIIA2)

DiffEqDevTools.constructTsitouras5 — Function

Runge–Kutta pairs of orders 5(4) using the minimal set of simplifying assumptions, by Ch. Tsitouras, TEI of Chalkis, Dept. of Applied Sciences, GR34400, Psahna, Greece.

DiffEqDevTools.constructTsitouras9 — Function

Optimized explicit Runge-Kutta pairs of order 9(8), by Ch. Tsitouras, Applied Numerical Mathematics, 38 (2001) 123-134.

DiffEqDevTools.constructTsitouras92 — Function

Optimized explicit Runge-Kutta pairs of order 9(8), by Ch. Tsitouras, Applied Numerical Mathematics, 38 (2001) 123-134.

DiffEqDevTools.constructTsitourasPapakostas6 — Function

Tsitouras-Papakostas's Order 6

Cheap Error Estimation for Runge-Kutta methods, by Ch. Tsitouras and S.N. Papakostas, Siam Journal on Scientific Computing, Vol. 20, Issue 6, Nov 1999.

DiffEqDevTools.constructTsitourasPapakostas8 — Function

Cheap Error Estimation for Runge-Kutta methods, by Ch. Tsitouras and S.N. Papakostas, Siam Journal on Scientific Computing, Vol. 20, Issue 6, Nov 1999.

DiffEqDevTools.constructVerner6 — Function

Verner Order 5/6 method

A Contrast of a New RK56 pair with DP56, by Jim Verner, Department of Mathematics. Simon Fraser University, Burnaby, Canada, 2006.

DiffEqDevTools.constructVerner8 — Function

Verner Efficient 8

DiffEqDevTools.constructVerner916 — Function

Verner 1991 First Order 5/6 method

Some Ruge-Kutta Formula Pairs, by J.H.Verner, SIAM Journal on Numerical Analysis, Vol. 28, No. 2 (April 1991), pages 496 to 511.

DiffEqDevTools.constructVerner9162 — Function

Verner 1991 Second Order 5/6 method

Some Ruge-Kutta Formula Pairs, by J.H.Verner, SIAM Journal on Numerical Analysis, Vol. 28, No. 2 (April 1991), pages 496 to 511.

DiffEqDevTools.constructVernerEfficient6 — Function

From Verner's Website

DiffEqDevTools.constructVernerEfficient7 — Function

From Verner's website

DiffEqDevTools.constructVernerEfficient9 — Function

From Verner's Webiste

DiffEqDevTools.constructVernerRobust6 — Function

From Verner's Website

DiffEqDevTools.constructVernerRobust7 — Function

From Verner's website

DiffEqDevTools.constructVernerRobust9 — Function

From Verner's Webiste

DiffEqDevTools.constructdverk78 — Function

Jim Verner's "Maple" (dverk78)

DiffEqDevTools.deduce_Butcher_tableau — Function

deduce_Butcher_tableau(erk, T=Float64)

Deduce and return the Butcher coefficients A, b, c by solving some specific ordinary differential equations using the explicit Runge-Kutta method erk. The type T will be used for computations and is the eltype of A, b, and c.

DiffEqDevTools.stability_region — Method

stability_region(z,tab::ODERKTableau)

Calculates the stability function from the tableau at z. Stable if <1.

\[r(z) = 1 + z bᵀ(I - zA)⁻¹ e\]

where e denotes a vector of ones.

DiffEqDevTools.stability_region — Method

stability_region(tab::ODERKTableau; initial_guess=-3.0)

Calculates the length of the stability region in the real axis.