- BaseX-Talk - mailman.uni-konstanz.de

geo package - Great Circle Distances
by E. Wray Johnson 20 Nov '17

20 Nov '17

Can anyone recommend how in BaseX to calculate great circle distances (e.g. between two geo:Points) (e.g. in meters or kilometers).

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Documentation typo
by Marco Lettere 20 Nov '17

20 Nov '17

Hi all, I think there is a typo in the documentation on the map:merge function [1]. The Summary states the possibility to use "use-combine" as a value for duplicates option but it should be 'combine' only. Regards, M. [1] http://docs.basex.org/wiki/Map_Module#map:merge

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Re: [basex-talk] Spatial Reference not working
by Christian Grün 19 Nov '17

19 Nov '17

The Geo Module is basically a light-weight wrapper for the JTS Topology Suite: geo:srid calls getSRID() (see [1]). Maybe you could ask on the jts mailing list and give us some feedback? [1] https://github.com/BaseXdb/basex/blob/master/basex-api/src/main/java/org/ex… Am 14.11.2017 12:23 vorm. schrieb "E. Wray Johnson" <wray.johnson(a)gmail.com >: I am sorry, I did not make myself clear. It always returns 0. There is a way to set the spatial reference. Typically with the srsName attribute on the geometry. In this example that would be the gml:Polygon element. However, none of the valid values is recognized by JTS. It is as if the srsName attribute is not getting to JTS. On Mon, Nov 13, 2017 at 5:41 PM, Christian Grün <christian.gruen(a)gmail.com> wrote: > > I can’t get the geo:srid() to work. I have tried many combinations of > @srsName values. Can anyone provide examples? > > Try e.g. this: > > import module namespace geo='http://expath.org/ns/geo'; > declare namespace gml='http://www.opengis.net/gml'; > geo:srid( > <gml:Polygon> > <outerboundaryIs> > <gml:LinearRing> > <coordinates>-150,50 -150,60 -125,60 -125,50 > -150,50</coordinates> > </gml:LinearRing> > </outerboundaryIs> > </gml:Polygon> > ) >

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Re: [basex-talk] XPath generator
by Kristian Kankainen 17 Nov '17

17 Nov '17

I don't know if it is the optimal solution in BaseX, but what functionality concerns, you can look at this functx function: http://www.xqueryfunctions.com/xq/functx_path-to-node-with-pos.html For BaseX specifics, maybe this page can help you (sorry but I am not sure): http://docs.basex.org/wiki/Index Best, Kristian K17. nov 2017 4:06 PM kirjutas kuupäeval Giuseppe Celano <celano(a)informatik.uni-leipzig.de>: > > Hi All, > > I would like to ask what the best way is in BaseX to create XPath expressions once I identify a certain span in an XML file. More concretely, I usually tokenize a text contained in an XML document, and I would like to specify for each token its position in the original document. Thanks. > > Best, > Giuseppe > >

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Some string peculiarities
by Kristian Kankainen 17 Nov '17

17 Nov '17

Hello I encountered some strange things when tokenizing text. Sample runnable code is added below. Here is my list of problems: 1) the regular expression "(\.){3}" doesn't match the same as "(\.\.\.)". Shouldn't they be equal? 2) a very annoying whitespace is placed text to the newline of out:nl(). It is placed before out:nl() if it is called in the beginning of an element, or it is placed after the newline if out:nl() is called in the end of an element. E.g the serialized output is either "<s> this" or ". </s>". Sample runnable code: for $text in ("this one... is the first.", "this one is second.") return <s>{ out:nl(), string-join( analyze-string($text, '(\.){3}|[\W]')//text()[not(.=" ")], out:nl() ), out:nl() }</s> , "--------- VERSUS --------- " , for $text in ("this one... is the first.", "this one is second.") return <s>{ out:nl(), string-join( analyze-string($text, '(\.\.\.)|[\W]')//text()[not(.=" ")], out:nl() ), out:nl() }</s>

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XPath generator
by Giuseppe Celano 17 Nov '17

17 Nov '17

Hi All, I would like to ask what the best way is in BaseX to create XPath expressions once I identify a certain span in an XML file. More concretely, I usually tokenize a text contained in an XML document, and I would like to specify for each token its position in the original document. Thanks. Best, Giuseppe

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Hypertext Application Language: Do we need a library that implements this?
by Omar Siam 17 Nov '17

17 Nov '17

Hi list! I implemented a REST API using apigility some time ago and by doing that I stumbled upon http://stateless.co/hal_specification.html I kind of like it so I thought maybe there is a customizable XQuery implementation? If not: Is someone else interested in creating a customizable BaseX XQuery implementation? Best regards Omar Siam

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basex-node binding objects
by E. Wray Johnson 15 Nov '17

15 Nov '17

Andy, 1. I am pelase that JSON result objects are mapped to JavaScript objects. Are undefined values handled (e.g. XQuery () vs JavaScript undefined)? 2. I am using basex-node and having trouble binding objects in a query. I would like to have the object result in an XQUERY map. It would be nice if undefined values as defined above are handled as well. For now I have to do something like this'$x := map ' +JSON.stringify(obj).replace('undefined', '()'). I hope this make sense.

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Update/Delete JSON
by E. Wray Johnson 15 Nov '17

15 Nov '17

What is the best way to update JSON objects (only some object values) by unique id? What is the best way to delete JSON objects by unique id? Wray Johnson (m) 704-293-9008

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BaseX gui, windows 10 and java
by Arto Viitanen 15 Nov '17

15 Nov '17

I have BaseX 8.6.7 on 32 bit Windows 10. When I tried to load an XML file yesterday to editor, the program crashed. I tried several times, and then reinstalled BaseX from net. This did not help. The program crashes on file dialog. If I open the file with double click, the file opens. Then I reinstalled java, but this did not help either.When I used cmd window, and run "java -cp BaseX.jar org.basex.BasexGUI", it worked. So it seems problem is on Java version embedded. Windows is 10.0.16299.19, and Java that works is 1.8.0_144-b01 Arto Viitanen Microteam Oy Haarlankatu 4B 33230 Tampere

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