[Kst] [Bug 94193] Read to End should use reqnframes not nframes

[D.V.Wiebe]

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http://bugs.kde.org/show_bug.cgi?id=94193        




------- Additional Comments From dwiebe physics utoronto ca  2004-12-06 15:28 -------
Yeah, Barth basically has what I mean.  My sequence of events is:

1. Starting with a kst reading a streaming datasource, I pause kst.
(This is to give the CPU an opportunity to do something else besides
plot data, for instance: drawing dialog boxes.)

2. Set Number of Frames in the Change Data Samples dialog to something
larger than the current number of frames in the datasource.  So, if
there are now 1000 frames, I set this to 2000.  I do this not to be
perverse, but because I really do want to look at the last 2000 frames
in the stream.

3. Hit Read to End to get things moving and up to date again.

When I do step 3, kst immediately changes that 2000 I just went through
the trouble of inputting into the number of frames currently in the
file, which might be, say, 1023, now.  This is really, really annoying,
'cause when I told kst I wanted to look at the last 2000 samples, I
wasn't trying to be coy: I really meant it.

My options are now either wait until the datasource has passed the 2000
samples mark and then go back and repeat steps 1-3 or try updating the
Change Data Samples dialog while kst is running.  (The latter is
especially advantageous around lunchtime, since waiting for the dialog
box to get drawn affords me the opportunity to eat lunch, and perhaps
take a brief nap.)

In the vast majority of cases it's not an issue, since the datasources
I'm looking at are much longer than the amount of data I actually want
to have plotted.