structure attributes - compare/sort by float values

[Bohumil Šimčík]

Hi all,

I have structure attributes with float number values. Is it possible to compare/sort these attributes via operators >= <= ? For example my document contains structures:

<s mdd= "2.9">...</s>

<s mdd= "1.5">...</s>  

<s mdd= "1.25">...</s> 

and I want to search  e.g. <s mdd >= "1.75" /> but it seems that only value before '.' is considered.

Corpus documentation:

https://www.sketchengine.eu/documentation/corpus-configuration-file-all-features/

mentions the NUMERIC parameter for sorting but nothing about comparing float numbers.

Thank you.

Bohumil Šimčík

[Miloš Jakubíček]

Dear Bohumil,

Yes, that's correct, the comparison here uses strverscmp() to compare the values, but it makes sense that for attributes marked as NUMERIC one should compare as numbers.

Currently, setting NUMERIC has no effect on query evaluation. I will take note of that but cannot promise when this would get implemented.

Best

Milos

Milos Jakubicek

CEO, Lexical Computing

http://www.lexicalcomputing.com

http://www.sketchengine.eu

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[Miloš Jakubíček]

Just to add to this following a hint from one of my colleagues (though you likely found out yourself): if you want this to work these days, all the numbers need to have the same number of floating point digits, i.e. in your case "2.90", "1.50" and "1.25" would work fine.

(see "man strverscmp" for details)

Best

Milos

Milos Jakubicek

CEO, Lexical Computing

http://www.lexicalcomputing.com

http://www.sketchengine.eu

[Bohumil Šimčík]

Thank you Mr. Jakubíček for the clarification.