[Kst] No autoupdate with dirfiles on Windows 7

Peter Milne peter.milne at d-tacq.com
Fri Aug 23 18:40:28 UTC 2013

Hi Steve

We run a repeating scope display with kst2, data is replaced about every 
second; data is for display only.
I've had trouble with both Win and Linux hosts refusing to update, but a 
sure-fire way to force kst2 to update appears to be -
on alternate updates, write +1, then +2 dummy samples.
It seems the change of data set size forces an update in a way that a 
simple data replacement does not.
Why +1,+2 rather than +0,+1 ? We found that with a 8192 sample data set, 
the X axis numbers -eg the final "8192" would change between updates, 
while going between 8193 and 8194 on alternate shots gives a nice 
constant axis representation, and, duplicating the last numbers in the 
set means that no one will ever notice.

ps: This is not a criticism of kst2, it's working well for us - one 
screen with 32 time domain plots, a second screen with 32 spectra, no 
problem with performance, it's all good. The linux plot is native, the 
Windows plot is a timed update on data on a Samba export.



On 23/08/13 18:44, Steve Maher wrote:
> On Fri, Aug 23, 2013 at 1:25 PM, Peter Kümmel <syntheticpp at gmx.net 
> <mailto:syntheticpp at gmx.net>> wrote:
>     On 23.08.2013 15:08, Steve Maher wrote:
>         Hm, maybe there aren't many folks using dirfiles on Windows.
>          I'll try to dig deeper.
>         Steve
>     Hi Steve, sorry for not having any tips?
>     Have you tried it on the dirfile list?
>     https://lists.sourceforge.net/lists/listinfo/getdata-devel
>     Peter
> Done.  Thanks for the suggestion.
> Steve
> p.s. I'm very impressed with kst - great job!
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Peter Milne			Peter.Milne at d-tacq.com
D-TACQ Solutions Ltd		www.d-tacq.com

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