Thu 2020-04-16 17:05:42 UTC, John H Palmieri: > > Maybe SageCell doesn't have the optional package "tides" installed. > This is the same error I see on my own computer without "tides".
I was thinking that too. I asked Andrey if it can be installed on SageCell: https://groups.google.com/d/topic/sage-cell/kR4R_HJDrms/discussion @[Toan T Nguyen] To run this command on your own Sage, you first need to install the optional package 'tides', which, depending on the OS and on how Sage was installed, might be achieved by running: sage -i tides Running it on SageCell would require 'tides' to be installed there, let's wait for Andrey's answer. I tried installing on Ubuntu with Sage 9.1.rc0, it worked. $ sage Forcing sage-location, probably because a new package was installed. Cleaning up, do not interrupt this. Done cleaning. ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version 9.1.rc0, Release Date: 2020-04-12 │ │ Using Python 3.7.3. Type "help()" for help. │ └────────────────────────────────────────────────────────────────────┘ ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Warning: this is a prerelease version, and it may be unstable. ┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ sage: t, x, y, z = SR.var('t, x, y, z') sage: s = 10 sage: r = 28 sage: b = 8/3 sage: f(t,x,y,z)= [s*(y-x),x*(r-z)-y,x*y-b*z] sage: x0 = -13.7636106821342005250144010543616538641008648540923684535378642921202827747268115852940239346395038284 sage: y0 = -19.5787519424517955388380414460095588661142400534276438649791334295426354746147526415973165506704676171 sage: z0 = 27 sage: T = 15.586522107161747275678702092126960705284805489972439358895215783190198756258880854355851082660142374 sage: sol = desolve_tides_mpfr(f, [x0, y0, z0],0 , T, T, 1e-100, 1e-100, 100) # optional - tides sage: print(sol) [[0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, -13.7636106821342005250144010543616538641008648540923684535378642921202827747268115852940239346395038, -19.5787519424517955388380414460095588661142400534276438649791334295426354746147526415973165506704676, 27.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000], [15.5865221071617472756787020921269607052848054899724393588952157831901987562588808543558510826601424, -13.7636106821342005250144010543616538641008648540923684535378642921202827747268115852940239346470530, -19.5787519424517955388380414460095588661142400534276438649791334295426354746147526415973165506634524, 27.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000345574]] -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/aaa65470-f656-4187-99f6-c2ac3ab8ba43%40googlegroups.com.
