This looks like the issue reported at https://github.com/sagemath/sage/issues/34233.
-- John On Thursday, April 13, 2023 at 2:13:44 PM UTC-7 Fernando Gouvea wrote: > That seems right. Plotting x^6/(1-x)^7 shows the error, but x^5/(1-x)^6 > does not. And > > .9^6/.1^7 = 5.31441000000001e6 > > .9^5/.1^6 = 590490.000000001 > > So it seems that there should be a 1e6 label that is somehow not appearing. > > Fernando > On 4/13/2023 4:33 PM, William Stein wrote: > > I tried "plot(g(x),(0.8,0.9))" and it says "1e10" in the upper left of the > plot, suggesting it is labeling the y axis with the labels divided by 1e10, > and maybe somehow that 1e10 gets cut off in your example. See below. The > default plotting in Sage got implemented as follows: In 2006 I said to Alex > Clemesha (who had just got his undergrad degree), "implement 2d plotting > for Sage that has the same API and look as mathematica, but translated to > be pythonic", and he did that. So whatever is happening here with the > labels changing, might be just copying what "Mathematica in 2006" did... > > [image: image.png] > > On Thu, Apr 13, 2023 at 1:22 PM Fernando Gouvea <fqgo...@colby.edu> wrote: > >> I get the same results in 9.2 and 9.6. >> >> Fernando >> On 4/13/2023 4:17 PM, William Stein wrote: >> >> Hi, >> >> I think I randomly ran into this same thing with sage-9.8 this week too. >> My guess is that there is some sort of overflow bug in the computation of >> the y-axis labels. It's probably one of the most severe bugs in sage ever, >> since it is so likely to be randomly misleading... >> >> On Thu, Apr 13, 2023 at 1:15 PM Fernando Gouvea <fqgo...@colby.edu> >> wrote: >> >>> I must be missing something here... >>> >>> sage: g(x)=x^10/(1-x)^11 >>> sage: plot(g(x),(0,0.9)) >>> >>> sage: g(0.7) >>> 15945.8104850773 <(810)%20485-0773> >>> >>> What's wrong? >>> >>> Fernando >>> >>> -- >>> ============================================================= >>> Fernando Q. Gouvea http://www.colby.edu/~fqgouvea >>> Carter Professor of Mathematics >>> Dept. of Mathematics >>> Colby College >>> 5836 Mayflower Hill >>> Waterville, ME 04901 >>> >>> Further Pronunciation Advice >>> >>> That math whiz Euler (Leonhard) >>> Had a great mind, but a peon heart. >>> His life was spare and frugal, >>> His sex life strictly conjugal. >>> >>> -- John Derbyshire >>> >>> >>> -- >>> 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...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sage-support/57352ea7-2214-50af-9944-1eed986c9442%40colby.edu >>> >>> <https://groups.google.com/d/msgid/sage-support/57352ea7-2214-50af-9944-1eed986c9442%40colby.edu?utm_medium=email&utm_source=footer> >>> . >>> >> >> >> -- >> William (http://wstein.org) >> -- >> 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...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sage-support/CACLE5GAxv0ZTFs6_NHpwV5BQL6%3Diw%3DRZz3dGER1i3R_nLZF9Bw%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/sage-support/CACLE5GAxv0ZTFs6_NHpwV5BQL6%3Diw%3DRZz3dGER1i3R_nLZF9Bw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> ============================================================= >> Fernando Q. Gouvea http://www.colby.edu/~fqgouvea >> Carter Professor of Mathematics >> Dept. of Mathematics >> Colby College >> 5836 Mayflower Hill >> Waterville, ME 04901 >> >> Flagrant breaches of good breeding, like singing in the streets >> or any other gross misconduct, are easily apparent and do not >> call especially for admonition and instruction. >> -- Cicero, De Oficiis >> >> >> -- >> 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...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sage-support/27cf8e83-3d66-ad8f-2030-74753af22650%40colby.edu >> >> <https://groups.google.com/d/msgid/sage-support/27cf8e83-3d66-ad8f-2030-74753af22650%40colby.edu?utm_medium=email&utm_source=footer> >> . >> > > > -- > William (http://wstein.org) > -- > 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...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/CACLE5GBx%3DCupGqqPJkDTDfv3KZ3aKsQ5gWE46aeE-ETezrLRuQ%40mail.gmail.com > > <https://groups.google.com/d/msgid/sage-support/CACLE5GBx%3DCupGqqPJkDTDfv3KZ3aKsQ5gWE46aeE-ETezrLRuQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > ============================================================= > Fernando Q. Gouvea http://www.colby.edu/~fqgouvea > Carter Professor of Mathematics > Dept. of Mathematics > Colby College > 5836 Mayflower Hill > Waterville, ME 04901 > > Flagrant breaches of good breeding, like singing in the streets > or any other gross misconduct, are easily apparent and do not > call especially for admonition and instruction. > -- Cicero, De Oficiis > > > -- 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/1a8ffa85-1ba6-4049-b83b-f93aff4bd412n%40googlegroups.com.
