On Fri, Mar 15, 2024 at 9:13 AM David Joyner <wdjoy...@gmail.com> wrote:
> > > On Thu, Mar 14, 2024 at 8:17 PM Dima Pasechnik <dimp...@gmail.com> wrote: > >> >> >> On Fri, Mar 15, 2024 at 12:15 AM Dima Pasechnik <dimp...@gmail.com> >> wrote: >> >>> >>> >>> On Thu, Mar 14, 2024 at 9:32 PM Dima Pasechnik <dimp...@gmail.com> >>> wrote: >>> >>>> >>>> >>>> On 14 March 2024 21:09:22 GMT, Nils Bruin <nbr...@sfu.ca> wrote: >>>> >I get the impression that without setting ymin,ymax you just end up >>>> with a >>>> >tiny range for the y-axis and its labelling is just very weird. I >>>> think the >>>> >labels displayed are shifted and scaled. So the error is just how the >>>> >labels are printed. That looks the same as >>>> >https://github.com/sagemath/sage/issues/34233 >>>> > >>>> >>>> Good catch! So it seems indeed the same story, just on the microscale. >>>> With the patch from #34233 I get essentially the same graph, but with extra >>>> 10^-9 >>>> or something like this printed above the graph. >>>> So when x is very close to 0 one indeed sees this "sharp" drop, by 10^9 >>>> or something... >>>> >>>> >The default behaviour would be to derive ymin and ymax from the >>>> sampled >>>> >points, and in your point plot example, those values vary from 1-1e-6 >>>> to >>>> >1+0e-6. So I think the range is derived appropriately. The labels on >>>> the >>>> >y-axis are just printed in a misguided way. >>>> >>> >>> Attached in the plot with x in [-0.1,0.1] - and it is actually OK, I >>> think the minimum (with x=0) is where it should be, at 0.9999990... >>> >> I meant 0.9999990 x 10^-6, as indicated on the label. >> > > That's good news, that it's just a matplotlib bug in the labeling of the > y-axis in the default case. > it's not a bug, it's a feature. :-) https://discourse.matplotlib.org/t/default-format-of-axis-offset-label/23162/2 indeed, import matplotlib as mpl mpl.rcParams['axes.formatter.useoffset'] = False plot((x^2+0.0001)/(x^2+0.0001000001), (x,-0.1,0.1)) produces the normal labelling of y-axes, without an offset. Perhaps we should have an example like this in the manual. HTH Dima > > Thanks everyone! > > >> >> It's a bit confusing that the y-axis is labelled this way, but the >>> offset of +1 is indicated at the >>> label above. >>> >>> Dima >>> >>> >>>> > >>>> >>> -- >> 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/CAAWYfq2qWATF3Jkx_RjvF_BeK1tOD_ge3kUV7eNFtTtm8oK8qg%40mail.gmail.com >> <https://groups.google.com/d/msgid/sage-support/CAAWYfq2qWATF3Jkx_RjvF_BeK1tOD_ge3kUV7eNFtTtm8oK8qg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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/CAEQuuAW6GJUaeJYds-sSJ4qktrid0U5Hn%2ByKdV684MUBWb6z6Q%40mail.gmail.com > <https://groups.google.com/d/msgid/sage-support/CAEQuuAW6GJUaeJYds-sSJ4qktrid0U5Hn%2ByKdV684MUBWb6z6Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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/CAAWYfq12aJ370ymT6%2BS-o4xgLsb_sp94aXrgGpLXyYdDgnTWUw%40mail.gmail.com.
