Why does ActiveX 3DGraph use so much memory?

[Slowpoke]

Hello, all!

I'm trying to create a waterfall power spectrum display using the ActiveX 3DGraph control, but as it runs it begins to consume almost all of my free RAM.  I've tested the example program provided in LabWindows, but it does the same thing (at a much lower rate).  I've tried to use the given "clear all" command to clear the graph, but it doesn't seem to help.  I hasten to add that the buffer from which the data are taken is quite large (1024 x 100 of 64-bit real), and may simply be too much for the control to handle well, but how can I keep the control from tying up so much memory?

Thanks!

Slowpoke

[AndrewMc]

Thanks for bringing this to our attention.  I see the same results here, so I have submitted this as an issue to R&D so that they can look into it.

[Gavin F]

Hi Slowpoke,

This was actually an issue with the examples and not the graph itself.  The examples were not discarding a variant type used for the graph.  You can modify the example to discard the variant type, or use the graph outside of the example.