| Summary: | Wrong point in PSDs with log scale | ||
|---|---|---|---|
| Product: | [Applications] kst | Reporter: | Nicolas Brisset <nicolas.brisset> |
| Component: | general | Assignee: | kst |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | netterfield, syntheticpp |
| Priority: | NOR | ||
| Version: | 2.0.3 | ||
| Target Milestone: | 2.0.4 | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Attachments: |
Test case (for PSD options)
PSD options I use Here is the result I get just after setting the X axis to log and hitting Apply |
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I can't reproduce this. Can you check again? Yes, I can confirm the issue is still here. I'm on OpenSuse 11.2 32 bits. Are you on 64 bits? yes. 64 bit. Can you reliably make this happen? If so, how> On Mon, Jun 13, 2011 at 3:29 PM, Nicolas Brisset <nicolas.brisset@eurocopter.com> wrote: > https://bugs.kde.org/show_bug.cgi?id=272580 > > > > > > --- Comment #2 from Nicolas Brisset <nicolas brisset eurocopter com> 2011-06-13 21:29:01 --- > Yes, I can confirm the issue is still here. I'm on OpenSuse 11.2 32 bits. Are > you on 64 bits? > > -- > Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are the assignee for the bug. > _______________________________________________ > Kst mailing list > Kst@kde.org > https://mail.kde.org/mailman/listinfo/kst > Created attachment 61032 [details]
PSD options I use
Now, that's strange! I have reproduced it on a 64 bits OpenSuse Linux machine, so it seems it's not related to that. And it also happens on Widows Xp 32 bits. What's more, when I look at the values (View->Vectors) the first frequency is shown as 0. I am surprised you can't reproduce the problem, as the steps described above lead to it each time. Here are the PSD options again as screenshot, but you can also use kst from an account where it has never been used, as the default values also lead to the issue. If you really can't reproduce the problem, maybe you can give me hints at where I should look, I may debug it myself. I have actually tried a bit, but I'm not very efficient. Created attachment 61033 [details]
Here is the result I get just after setting the X axis to log and hitting Apply
Looks like Kst interpolates from (0,0.225) to (1,0.809) which is in log scale a line from (-350, 0.225) to (0, 0.809), so this is by design. OK, so what is missing so that we can squash this bug? I seem to be able to reproduce it very easily, but Barth not?!?? Peter, do you also see it? If there are points on the concerned axis for which the value is <=0, kst should handle it gracefully, shouldn't it? SVN commit 1238831 by netterfield: BUG: 272580 Fix the illusive Log mode range bug in psd's :-) Directly edit parameters in plugin dialogs. Fix plot selection in dialogs. M +3 -2 libkst/vector.cpp M +1 -1 libkstmath/psd.cpp M +6 -3 widgets/curveplacement.cpp M +18 -3 widgets/scalarselector.cpp WebSVN link: http://websvn.kde.org/?view=rev&revision=1238831 |
Created attachment 59669 [details] Test case (for PSD options) Version: 2.0.3 OS: Linux When setting the X axis to logarithmic, there is a point around 1e-281 that looks very strange. Reproducible: Always Steps to Reproduce: - Load CStk from TWIN1xxx, creating XY and PSD in different tabs (PSD options: see attached test case) - In the second tab, with the PSD, set the scale to log Actual Results: You get a point below 1e-281 which distorts the plot completely Expected Results: Changing the X axis scale from log to linear should not have such a drastic effect! OS: all Interestingly, loading the test case does not produce the problem!!! You have to go through the steps above to evidence it.