Update matrix dimension examples#47
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jamesrhester merged 2 commits intoJul 10, 2026
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The new example makes it clear which list element maps to which dimension.
jamesrhester
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Jul 10, 2026
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Closes issue #12.
While validating the category usage examples from various dictionaries I once again stumbled upon the question how items that have the Matrix container and a 1-D dimension (e.g. '[3]') should be expressed in a CIF file, i.e. is the top level List required (
[ a b c ]vs.[[ a b c ]]). From the discussion in #12 and usage example in the dictionaries, it seems that[ a b c ]is the expected correct form. As such, I tried to formalise it.I understand that DDLm is format-agnostic therefore I tried to specify it in general terms. Please rephrase if this does not seem suitable.
On a related note, it seems that we also do not specify anywhere how a Matrix container should be represented in CIF. At one point I just started assuming that a list of lists (each nested list representing a row). This interpretation is employed in value examples of other dictionaries so in a sense it is defined through usage.