| Summary: | Bogus front to back line on live plot | ||
|---|---|---|---|
| Product: | [Applications] kst | Reporter: | Peter Milne <peter.milne> |
| Component: | plotting | Assignee: | kst |
| Status: | RESOLVED NOT A BUG | ||
| Severity: | normal | CC: | netterfield, peter.milne |
| Priority: | NOR | ||
| Version: | 2.0.0 | ||
| Target Milestone: | 2.0.0 | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Attachments: |
Picture shows the "diagonal line" fault
showing the fault relates to timebase |
||
Created attachment 51124 [details]
showing the fault relates to timebase
Top two plots vs INDEX are good.
Bottom two plots vs TB show the line fault.
This looks like a synchronization issue with the dirfile, where the X axis vector hasn't yet been written to yet... Can you look at http://getdata.sourceforge.net/dirfile.html#reffield and make sure that your dirfile is being written to correctly? (basically, you need to make sure that the "reference field" is written to last.) Correcting the DirFile generation as per comment 2 eliminates the fault. So this was a fault in user code, not KST or DirFile. These bugs are solved with 2.0.0 |
Created attachment 51123 [details] Picture shows the "diagonal line" fault Version: 2.0.0 OS: Linux Running a live plot, last 100 points in a long trace with >1 update per second. Approx 1 in 10 plots show a fault where it appears that a straight line is drawn back from the right-most point to the left most point. This appears as "Diagonal Line" in noisy data. The rest of the plots are fine Reproducible: Always Steps to Reproduce: Plot live data. Watch. Finger on the pause button to catch it .. Looks like it's related to timebase. Plotting data vs index, the fault doesn't happen. The generator program updates data first, then timebase... maybe we'd get better results if it were to write timebase before data?.