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I saw the Github issue and responded before I realized there was already a lengthy correspondence here. I will have to read more carefully what has already been contributed here, but I wanted to quickly summarize what I wrote there (<a href="https://github.com/nexusformat/NIAC/issues/25" class="">https://github.com/nexusformat/NIAC/issues/25</a>):
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<div class="">“In my view, it is the role of the NeXus standard to provide a way to offer a default plot for each NXdata group, but I don't think it is necessary for NeXus to then specify all other possible non-default plots. Any program is free to provide
that option within the current standard as NeXpy does.”</div>
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<div class="">Please see the issue for my reasoning - basically, you can do what Armando requests, i.e., plot multiple signals, now without adding extra complexity to the standard.</div>
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<div class="">In recent years, I have become concerned about the standard becoming more complicated than it need be, partly because of my experience in writing a generic NeXus application. Every new layer of complexity makes the files increasingly difficult
to parse (as well as more complex to write), and so I would recommend that we only specify what is truly necessary. </div>
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<div class="">Ray
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<div class="">On Jan 11, 2018, at 8:01 AM, V. Armando Solé <<a href="mailto:sole@esrf.fr" class="">sole@esrf.fr</a>> wrote:</div>
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<div class="">On 11/01/2018 14:50, <a href="mailto:Peter.Chang@Diamond.ac.uk" class="">
Peter.Chang@Diamond.ac.uk</a> wrote:<br class="">
<blockquote type="cite" class="">My suggestion would be an auxiliary attribute in the NXdata group to point to the dataset(s) to be optionally plotted alongside the signal dataset:<br class="">
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@signal: fitted<br class="">
@auxiliary: [raw_data]<br class="">
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Quite smart way. I like it!!!<br class="">
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It is so flexible that it would even allow to be generalized as<br class="">
auxiliary_signals, auxiliary_axes, so that even the condition of sharing<br class="">
the same axes is not needed and one would be plot, for instance, the raw<br class="">
data and the fitted data with different number of points (a simple use<br class="">
case: with more points on the fitted data to better visualize a gaussian<br class="">
shape if required). Current programs would work and everything would be<br class="">
compatible.<br class="">
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NIAC guys, what about *extending* NXdata in these lines ?<br class="">
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A default plot/display type would be handy as well as the plot dimensions to use:<br class="">
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@display: line<br class="">
@display_dimensions: [-1] (last dim as default)<br class="">
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Or<br class="">
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@display: image<br class="">
@display_dimensions: [-2,-1] (last two dims as default)<br class="">
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On those I disagree. To be images or spectra is an intrinsic property of<br class="">
the dataset, not a plot property.<br class="">
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Armando<br class="">
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-- <br class="">
Ray Osborn, Senior Scientist<br class="">
Materials Science Division<br class="">
Argonne National Laboratory<br class="">
Argonne, IL 60439, USA<br class="">
Phone: +1 (630) 252-9011<br class="">
Email: <a href="mailto:ROsborn@anl.gov" class="">ROsborn@anl.gov</a></div>
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