msb Junior Member Got Viz? Posts: 30

How to use export in combination with sequencer 01/24/11 at 23:25:27   Dera Joel,   I'm trying to export a series of number made sequentially using Sequencer to an output file. To be more precise, for each sequence, I measure something (e.g. the area of an isosurface) which then I want to write it out as a single floating point number. So The output file should be basically a single column of data.   The problem is that After each sequence, the previous data is replaced by the new one. So I end up with an output file containing a single line of number (corresponding to the last sequence). I was wondering If you know how to fix this problem.   Thanks   Saeed

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joelr OpenDX Forum Administrator Got Viz? Posts: 388

Re: How to use export in combination with sequence Reply #1 - 01/25/11 at 04:56:50   What you need to do is accumulate the numbers in an array, then write out the array at the end. The attached image shows how to accumulate a list of numbers. On each iteration of the sequencer, send the new number in the top. The accumulated list comes out   the bottom. You can send this to Export directly. However, for efficiency, you might want to stick a Route in, and only export on the final iteration.   Cheers, Joel

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joelr OpenDX Forum Administrator Got Viz? Posts: 388	Re: How to use export in combination with sequence Reply #2 - 01/25/11 at 04:57:23   Oops...and now, the image...
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msb Junior Member Got Viz? Posts: 30

Re: How to use export in combination with sequence Reply #3 - 01/25/11 at 10:43:33   Thank you so much Joel.   Your trick works like a charm. Now I can save all the sequential data as an array in an output file.   But I just could not catch your point how Route can improve the efficiency. In my current program, regardless of whether I send the accumulated list directly to Export or via Route, the overall performance appears to be the same. Moreover even with Route, the output file seems to be updated after each sequence. The attached shows how I do the export. Please let me know If I'm missing something   Thanks again Saeed

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msb Junior Member Got Viz? Posts: 30	Re: How to use export in combination with sequence Reply #4 - 01/25/11 at 11:04:40   I think now I understood your point. In the Route, the selector should be always 0 except for the last iteration. In this case, the data would only be sent to the Export after finishing all the sequences. Right?
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joelr OpenDX Forum Administrator Got Viz? Posts: 388	Re: How to use export in combination with sequence Reply #5 - 01/25/11 at 11:42:22   Yes, exactly.
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msb Junior Member Got Viz? Posts: 30	Re: How to use export in combination with sequence Reply #6 - 01/25/11 at 19:02:46   Thanks Joel,
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