Re: [Gnuplot-info] Compute values with 'every'

[Robert v. K. <bo...@en...>]

Oh dear! I wrote a little too soon Alex, sorry.
The trace looks OK at first and then I realised that it had more plotted 
points that the number of data samples (twice as many). These are 
positioned at the integer points of samples on the X axis and also 
erroneously at 1/3 of the distance between these points. (So at X = 1, 
1.33, 2 etc..)
I cannot see where these points come from , any ideas?

LG,

Bob

> On 02/12/2020 17:00, Alexander Stangl wrote:
>> Das sollte jetzt klappen:
>> statt using 0:... musst du using (($0-3)/4):... verwenden. Dann plottest
>> du die daten gleich wie die anderen.
>>
>> LG
> 
> Alexander, your solution works perfectly.
> Again, many thanks for your efforts.
> My knowledge of gnuplot is not as deep as yours.
> 
> I'll post to the list as the topic is closed.
> Bob (Robert) von Knobloch.
> 
> Solution:
> 
> set datafile missing NaN
> y=NaN
> plot	file1 every 4::0 using 1 title "rr25" ls 1, \
> 	file1 every 4::1 using 1 title "rr50" ls 3, \
> 	file1 every 4::2 using 1 title "rr75" ls 5, \
> 	file1 every 4::3 using 1 title "rr100" ls 7, \
> 	file1 using (($0-3)/4):(int($0)%4 == 0 ? (y=$1) : int($0)%4 == 3 ? $1/y
> : NaN) title "rr100/rr25" ls 9
> 
> 
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