Intensity Chart X scale flip = image drift

Hi all! When programming one application for measurement I encountered following problem. Because scanning in this measurement is performed at first from left to right and then immediately from right to left I write the data to intensity chart and when the end of scanning region is reached I flip the x axis and I write the chart history data into history of the chart but in reversed order . This creates the effect of preserving the image as it was during previous scan (only flipping itself without writing the reverse history would also cause flip of the already drew image).
All seems to work smoothly but if you run it you see small drifting of the image when reaching the edges. On the right the image drifts to the left a bit and on the left to the right.
What does it cause?
Thx a lot.
LV 2011, Win7
Attachments:
XAxisFlip.vi ‏33 KB
data.zip ‏502 KB

Hi and thanks again.
Now I realized why Gerd didn't see anything - When testing different datasets I forgot to switch the 'transpose' to false. So please do it and then you will clearly see the shift - maybe focus on the white part in the middle of the picture.
I am sorry for that inconvenient.
For the same reason Altenbach we had totally different results of power consumption. The original data has 8001 dbls for one vector(not 100) which in your example results in really high CPU usage(around those 50%)
My measurement with correct data (reading vi excluded, no delays):
Mine: 60-70ms
Yours without cursor: 1200ms
Yours with cursor: 9200ms
I am still trying to come with some logical explanation for the shifting because using the picture control seems to bring a lots of work and troubles
Message Edited by ceties on 08-24-2008 05:29 AM
LV 2011, Win7
Attachments:
Transpose.png ‏1 KB

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