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Allow dimensions in NXdata to be lists of strings #1246

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Merged
phyy-nx merged 15 commits into from
Dec 20, 2023
Merged

Allow dimensions in NXdata to be lists of strings #1246

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7157d25
Add new datatype, the union of NX_CHAR and NX_NUMBER
phyy-nx Mar 13, 2023
db047de
Change AXISNAME field of NXdata to allow character values
phyy-nx Mar 13, 2023
3dc02ba
Whitespace
phyy-nx Mar 13, 2023
6d23703
Add NXdata attribute default_slice
phyy-nx Mar 17, 2023
6b2a84f
Add NX_CHAR_OR_NUMBER to the primitiveType enum
phyy-nx Apr 18, 2023
4f3c73a
Whitespace
phyy-nx Apr 18, 2023
1168f00
Merge branch 'main' into dimension_as_char
phyy-nx Jun 19, 2023
4ba9645
Fix formatting
phyy-nx Jun 19, 2023
6f2a056
Add example of default_sice using an integer as a string
phyy-nx Jun 19, 2023
48a82e4
Bugfix in description
phyy-nx Sep 20, 2023
ac8c5d0
Full example
phyy-nx Sep 20, 2023
bb6906e
Typo
phyy-nx Oct 19, 2023
d7ae84c
Added NX_CHAR as type for default_slice
phyy-nx Oct 19, 2023
78566e1
Actually use NXCHAR_OR_NUMBER
phyy-nx Oct 19, 2023
ad0a129
Merge branch 'main' into dimension_as_char
phyy-nx Nov 21, 2023
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32 changes: 32 additions & 0 deletions base_classes/NXdata.nxdl.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,38 @@
the axes attribute can be omitted.
</doc>
</attribute>
<attribute name="default_slice">
<doc>
Which slice of data to show in a plot by default. This is useful especially for
datasets with more than 2 dimensions.

Should be an array of strings of length equal to the number of dimesions
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in the data, with the following possible values:
* ".": All the data in this dimension should be included
* Integer: Only this slice should be used.
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* String: Only this slice should be used. Use if AXISNAME_indices is a string
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array.

Example::

data: NXdata
@signal = "data"
@axes = ["image_id", "channel", ".", "."]
@image_id_indices = 0
@channel_indices = 1
@default_slice = [".", "difference", ".", "."]
image_id = [1, ..., nP]
channel = ["threshold_1", "threshold_2", "difference"]
data = uint[nP, nC, i, j]
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Here, a data array with four dimensions, including the number of images
(nP) and number of channels (nC), specifies more dimensions than can be
visualized with a 2D image viewer for a given image. Therefore the
default_slice attribute specifies that the "difference" channel should be
shown by default.

</doc>
</attribute>
<attribute name="AXISNAME_indices" type="NX_INT">
<!--
nxdl.xsd rules do not allow us to show this as a variable name
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