CONTINUOUS DISPLAY OF 2-DIM ARRAY INTO AN XY GRAPHIC

[asa]

I am plotting two 1-dim array in an xy graphic into a while loop (Reading continuous voltage for two sensors). I need to see the continuous trace of the plot but I only can visualize the intantaneous value of x versus y. The graphic is not keeping the trace. I really appreciate any help. thanks in advance.
Asahel Banobre asahelbl@hotmail.com

[Mads]

You'll have to create a buffer (.e.g. a circular one) to hold all the data you want on the graph and then write the arrays from the buffer to it.

Check out the following thread:

http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=137&HOID=5065000000050000004D760100&HTHREAD=000095821&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0

[eriasystemes]

If you want the graphic to keep the trace it is better to use a chart.
I join a little example of a comparison between a chart, XY Graphs and Graphs. If you don't want to bother with X axis and have a 1D array to plot I recommend you to use a Graph (neither XY Graph nor Chart)

Hope this helps !
Julien

[xiuming]

hello, I have the same problem, but I don't understand well, who can explain to me,thanks in advance 

[JK1]

Look into these examples:

C:\Program Files\National Instruments\LabVIEW 8.x\examples\general\graphs\charts.llb\Charts.vi

C:\Program Files\National Instruments\LabVIEW 8.x\examples\general\graphs\gengraph.llb\XY Graph.vi

[altenbach]

If you use the Express xy graph, you can uncheck "clear data on each call" and a history will be kept.

[xiuming]

in fact, I would like to  show some  seconds, after that it restart graphic, is like électro-cardiogramme.