XY graph slow in response

Hi all

I have 2 XY graphs in my VI and for some reason any 1 XY is super slow in response. I enclose my vi here which shows the behavior.

There are 2 XY graphs. The top is super slow in response and one below behaves normally.

Could someone please look at the vi and let me know what is the problem with the slow chart?

Thank you

Ritesh

Ritesh,

I think the data are written for graphics before changing the Visible property to false. I ran the Profiler and saw indications of quantity of memory used which resembled a copy was made for the chart slow, even when she was invisible.

When I put a structure of sequences in the nodes property and wired through the data in the graph, I can't slow it down or copies of additional data.

Consider that your chart has only 800 + pixels in width and you are feeding 200000 data points. The internal code of the chart should reduce these data the number of pixels on the screen. The x-axis data is linear. If you have reduced the data, especially at the end of the high frequency, it would probably speed things up. Also because the x-axis data is linear, you can use a waveform graph, and not the graph XY. I don't have test intensively, but with a waveform graph, it seemed much more quickly.

# I just noticed you have smoothed checked on the slow chart and not on the quick graph.  Turn on other charts that slows them, too!

Lynn

Tags: NI Software

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