  Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,203   Was thanked: 1034 time(s) in 599 post(s)
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lsoda     
Functions list: lsoda(5)lsoda(init, x1, x2, intvls, D) solves the initial value problem for stiff or nonstiff systems. Arguments: - init is either a vector of n real initial values, where n is the number of unknowns (or a single scalar initial value, in the case of a single ODE). - x1 and x2 are real, scalar endpoints of the interval over which the solution to the ODE(s) is evaluated. Initial values in init are the values of the ODE function(s) evaluated at x1. - intvls is the integer number of discretization intervals used to interpolate the solution function. The number of solution points is the number of intervals + 1. - D is a vector function of the form D(x,y) specifying the right-hand side of the system Options: - AbsTol - absolute tolerance parameter, default value 10⁻⁷. - RelTol - relative tolerance parameter, default value 10⁻⁴. Links: 1. Solving Stiff ODEs. 2. Serial Fortran Solvers for ODE Initial Value Problems.  lsoda.integrate.sm (11kb) downloaded 48 time(s). lsoda.kinetic1.sm (8kb) downloaded 37 time(s). lsoda.kinetic2.sm (11kb) downloaded 31 time(s). lsoda.kinetic3.sm (11kb) downloaded 30 time(s). lsoda.test1.sm (12kb) downloaded 32 time(s). lsoda.test2.sm (12kb) downloaded 31 time(s). lsoda.Arenstorf Orbit.sm (16kb) downloaded 36 time(s). lsoda.Amplitude detector.sm (21kb) downloaded 30 time(s). lsoda.integrate.pdf (88kb) downloaded 54 time(s). lsoda.kinetic1.pdf (75kb) downloaded 42 time(s). lsoda.kinetic2.pdf (88kb) downloaded 39 time(s). lsoda.kinetic3.pdf (83kb) downloaded 39 time(s). lsoda.test1.pdf (88kb) downloaded 52 time(s). lsoda.test2.pdf (91kb) downloaded 35 time(s). lsoda.Arenstorf Orbit.pdf (94kb) downloaded 43 time(s). lsoda.Amplitude detector.pdf (149kb) downloaded 38 time(s).Edited by user 04 December 2020 07:23:24(UTC)
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 4 users thanked uni for this useful post.
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on 21/01/2019(UTC), on 21/01/2019(UTC), on 21/01/2019(UTC), on 21/01/2019(UTC)
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 Rank: Advanced Member Groups: Registered
Joined: 19/11/2020(UTC) Posts: 34  Location: Ireland Was thanked: 1 time(s) in 1 post(s)
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Hello Viacheslav, I attach here the two different file, lsodaMAP3 have the problem solved, lsodaMAP2 show the error. SMath version 0.99.7610.506 lsoda version 0.1.7175.9902 lsoda MAP2.sm (49kb) downloaded 17 time(s). lsoda MAP3.sm (52kb) downloaded 12 time(s). crash.pdf (79kb) downloaded 14 time(s).Playing a little bit in the lsodaMAP2 I was able to make it show the chart with the "problem".  Let me know if you need anything else! All the best Francesco Edited by user 02 December 2020 18:46:19(UTC)
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Veniamo da molto lontano e andiamo molto lontano! Palmiro Togliatti |
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,203 Was thanked: 1034 time(s) in 599 post(s)
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The problem is in the X-Y Plot plugin. It cannot display the input data because it is outside the normal bounds. Also in the document somehow the min and max values of the axis are the same, which also results in an error. It will take a time to fix this. I haven't tested the plugin on bad data much. |
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 Rank: Advanced Member Groups: Registered
Joined: 04/07/2015(UTC) Posts: 5,793  Was thanked: 867 time(s) in 697 post(s)
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... sanity check ISODA wrt all the examples. 
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Rank: Advanced Member Groups: Registered
Joined: 04/07/2015(UTC) Posts: 5,793 Was thanked: 867 time(s) in 697 post(s)
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... test more ISODA [Originator Mathsoft Collaboratory]  Interested users must be courageous enough to code, especially for those above my denigrated SS 6179.
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,203 Was thanked: 1034 time(s) in 599 post(s)
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Plugin name is lsoda. Function name is lsoda. Library name is LSODA. It is a part of LSODE (Livermore Solver for Ordinary Differential Equations). Not ISODA. Use correct names. |
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