https://bugs.kde.org/show_bug.cgi?id=454783

            Bug ID: 454783
           Summary: KStars FITS-Viewer Histogram does not automatically
                    update
           Product: kstars
           Version: 3.5.8
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: mutla...@ikarustech.com
          Reporter: albert.fetsc...@t-online.de
  Target Milestone: ---

SUMMARY

KStars FITS-Viewer Histogram does not automatically update.

        KStars Version 3.5.8 Stable
        OS: Linux (armv7l) release 5.10.103-v7l+
        Astroberry
        Raspberry Pi 4B


STEPS TO REPRODUCE

CCD "ZWO ASI120MM-S" is connected to Astroberry.

Step 1: 

EKOS -> Click on button "Capture a preview"
        KStars FITS-Viewer: 
                Shows preview. 
                OK!

KStars FITS-Viewer -> Click on button "Histogram"
        KStars FITS-Viewer: 
                Shows histogram graphic. 
                OK!

Step 2: 

EKOS -> Click on button "Capture a preview"
        KStars FITS-Viewer: 
                Shows preview. That is OK!
                Histogram graphic is NOT updated! That is of course NOT OK!
                FAILED!

KStars FITS-Viewer -> Preview Tab -> Click on "Tab Statistics" (just for fun)
        KStars FITS-Viewer -> Preview Tab: 
                Shows actual statistics (values looks good). That is OK!
                OK!

KStars FITS-Viewer -> Preview Tab -> Click on "Tab Histogram" (to go back to
histogram)
        KStars FITS-Viewer -> Preview Tab: 
                Shows now the updated histogram grapic. Now it is OK!
                OK!

        KStars FITS-Viewer -> Preview Tab: 
                Shows histogram data but some values (mean, median) are not
updated (compared to previous statistics tab). Therefore also NOT OK! 
                FAILED!


I hope this short description will help to reproduce the reported bug.
If you need more informations, please donĀ“t hesitate to contact me.
Thanks, 
Albert

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