Show more than 250 waveforms in a report graph

[Mr. Spark Plug]

I found this method to expand the curves and show multiple waveforms on one graph in a report:

http://forums.ni.com/t5/DIAdem/Read-number-of-channels-dynamically/m-p/1604894#M13520

However, this is limited to 250 waveforms.  I would like to expand the curves to show 500 waveforms.  Is this possible? 

Otmar, if you kept the file I sent you yesterday, I would like to show all 500 ch1 channels on one waveform. 

Thanks in advance. 

[Kyle_M]

Mr. Spark Plug,

Out of curiousity, why are you trying to plot 500 waveforms on one plot? Any more than about 10-15, and usually a graph becomes nearly unreadable from having too much data on it.

What exactly is the end goal? We may be able to find a better solution than simply plotting more curves on a graph, such as plotting more crucial information, such as channel comparisons.

Regards,

Kyle Mozdzyn

Applications Engineering

National Instruments

[Mr. Spark Plug]

Thanks for the reply. 

I have recorded 500 waveforms of the secondary voltage on an automobile ignition system.  I am interested to see if one of those 500 waveforms looks different than the rest. For example, if the 452nd recording was a misfire in the ignition circuit, the waveform would look drastically different than the rest.   I don't need to see the waveform individually, but I need to see a "Shadow" of all the waveforms at once, as the misfire would stand out. 

The expanded curve function allows me to show multiple waveforms as one entry in the graph, which is perfect for my needs, except it doesn't show all 500 waveforms.  ALSO, it makes the PDF report export quite large. 

If there was some function that could display all of the waveforms in the same graph entry and was small enough that the PDF was not too big, it would help me a lot. 

If you send me an email at RSenior at NGKsparkplugs dot com, I can send you the PDF export of what I have now, and what I'm looking for. 

[Kyle_M]

Mr. Spark Plug,

I think we have some other options instead of plotting more traces. If the signal is significantly different, we should be able to use some analytical functions to find the misfire instance for you. 

I have sent you a PM regarding this becuase you do have a service contract with us. 

Regards,

Kyle Mozdzyn

Applications Engineering

National Instruments

[Kyle_M]

Just for reference for all the other users out there, we discussed appending multiple waveforms onto each other, then having the time column appended to itself that many times (ie: time goes 1,2,3,4,5,1,2,3,4,5) as a workaround. 

[Jim West]

Another solution is too add another axis over the top of the original axis. It is kind of a pain to do especially if you need to autoscale. However, if the plot limits are fixed you just put the same plot over the first. You can load 250 per plot. Jim