How to compute a node's depth in XSLT?

[datamodel]

Hello I have an XML tree of which you can see a mini-version here:

http://paste.uni.cc/11838

(the tree is actually over 30,000 levels deep)

How do I count the depth of a given <NODES><NODE??? ??

The problem is I would like to "color" nodes based on their depth in
the tree - ie, use alternating colors.

A depth, or actually "level" in the logical tree actually comprises two
levels in the XML tree - ie
<NODES><NODE>

There is no depth attribute in the XML tags,
and the position() function applies only to the currently processed
node,

Ideally I want to construct a test like

<xsl:if test="[parent::positio n() &lt; 3]">

of course this is wrong syntax.

and position() doesn't help , since it really computes the position in
the siblings at a given level,
not the level of depth in the tree.

[datamodel]

This solution is in XSLT 1.0
not very elegant to the time complexity -

I used the function :

count(ancestor: :NODES)

to determine a value for the depth of a given <NODEnode.
datamodel wrote:

Hello I have an XML tree of which you can see a mini-version here:

http://paste.uni.cc/11838

(the tree is actually over 30,000 levels deep)

How do I count the depth of a given <NODES><NODE??? ??

The problem is I would like to "color" nodes based on their depth in
the tree - ie, use alternating colors.

A depth, or actually "level" in the logical tree actually comprises two
levels in the XML tree - ie
<NODES><NODE>

There is no depth attribute in the XML tags,
and the position() function applies only to the currently processed
node,

Ideally I want to construct a test like

<xsl:if test="[parent::positio n() &lt; 3]">

of course this is wrong syntax.

and position() doesn't help , since it really computes the position in
the siblings at a given level,
not the level of depth in the tree.

[Joe Kesselman]

datamodel wrote:

count(ancestor: :NODES)

That counts the ancestors elements named <NODES>. I think you meant
count(ancestor: :node())
--
() ASCII Ribbon Campaign | Joe Kesselman
/\ Stamp out HTML e-mail! | System architexture and kinetic poetry

[Jürgen Kahrs]

datamodel wrote:

Hello I have an XML tree of which you can see a mini-version here:

http://paste.uni.cc/11838

(the tree is actually over 30,000 levels deep)

Thanks for pointing us to this data source.
I actually downloaded the original file here:

http://www.tolweb.org/tree/home.pages/downloadtree.html

I was a bit disappointed by the crude quality
of this data.

xmllint --noout tolskeletaldump .xml
tolskeletaldump .xml:25234: parser error : Input is not proper UTF-8, indicate encoding !
Bytes: 0xE9 0x6B 0x65 0x73
EXTINCT="0" ID="66855"><NAM E><![CDATA[Stichotrema sz?essyi]]></NAME></NOD
^
Whoever created this data, he should insert
a proper XML header indictaing the encoding.

How do I count the depth of a given <NODES><NODE??? ??

I am still interested in this XML file because it
is the only example of real-life data I ever saw
that claimed to contain 30,000 levels of depth.
Last year I created a synthetic file with 10,000
levels (for regression tests) and some people told
me that this is nonsense. They said that data with
so many levels never occur in real-life.

I am interested in using your file for regression tests.
Do you see any chance that your file will be supplied
in an updated and corrected form ?

[datamodel]

I also got the file from the same location you cited.
I am not the author of the file, and I agree with you.
I was also disappointed at crudeness / quality of the document.
However I was very happy that TOL made this file available to the
public :)
Jürgen Kahrs wrote:

datamodel wrote:

Hello I have an XML tree of which you can see a mini-version here:

http://paste.uni.cc/11838

(the tree is actually over 30,000 levels deep)

Thanks for pointing us to this data source.
I actually downloaded the original file here:

http://www.tolweb.org/tree/home.pages/downloadtree.html

I was a bit disappointed by the crude quality
of this data.

xmllint --noout tolskeletaldump .xml
tolskeletaldump .xml:25234: parser error : Input is not proper UTF-8, indicate encoding !
Bytes: 0xE9 0x6B 0x65 0x73
EXTINCT="0" ID="66855"><NAM E><![CDATA[Stichotrema sz?essyi]]></NAME></NOD
^
Whoever created this data, he should insert
a proper XML header indictaing the encoding.

How do I count the depth of a given <NODES><NODE??? ??

I am still interested in this XML file because it
is the only example of real-life data I ever saw
that claimed to contain 30,000 levels of depth.
Last year I created a synthetic file with 10,000
levels (for regression tests) and some people told
me that this is nonsense. They said that data with
so many levels never occur in real-life.

I am interested in using your file for regression tests.
Do you see any chance that your file will be supplied
in an updated and corrected form ?

[David Carlisle]

datamodel wrote:

I also got the file from the same location you cited.
I am not the author of the file, and I agree with you.
I was also disappointed at crudeness / quality of the document.
However I was very happy that TOL made this file available to the
public :)
Jürgen Kahrs wrote:

>datamodel wrote:

>>Hello I have an XML tree of which you can see a mini-version here:

http://paste.uni.cc/11838

(the tree is actually over 30,000 levels deep)

Thanks for pointing us to this data source.
I actually downloaded the original file here:

http://www.tolweb.org/tree/home.pages/downloadtree.html

I was a bit disappointed by the crude quality
of this data.

xmllint --noout tolskeletaldump .xml
tolskeletaldum p.xml:25234: parser error : Input is not proper UTF-8, indicate encoding !
Bytes: 0xE9 0x6B 0x65 0x73
EXTINCT="0" ID="66855"><NAM E><![CDATA[Stichotrema sz?essyi]]></NAME></NOD
^
Whoever created this data, he should insert
a proper XML header indictaing the encoding.

>>How do I count the depth of a given <NODES><NODE??? ??

I am still interested in this XML file because it
is the only example of real-life data I ever saw
that claimed to contain 30,000 levels of depth.
Last year I created a synthetic file with 10,000
levels (for regression tests) and some people told
me that this is nonsense. They said that data with
so many levels never occur in real-life.

I am interested in using your file for regression tests.
Do you see any chance that your file will be supplied
in an updated and corrected form ?

if you stick
<?xml version="1.0" encoding="iso-8859-1"?>
at the top of the file extracted from the referenced zip file then it
becomes well formed.

executing the Xquery

max(doc('tolske letaldump2.xml' )//*/count(ancestor: :*))
returns 241 as the maximum depth of an element node, which is rather
less than 30000.

David

[=?ISO-8859-1?Q?J=FCrgen_Kahrs?=]

David Carlisle wrote:

if you stick
<?xml version="1.0" encoding="iso-8859-1"?>
at the top of the file extracted from the referenced zip file then it
becomes well formed.

Indeed, now it is well formed.

executing the Xquery

max(doc('tolske letaldump2.xml' )//*/count(ancestor: :*))
returns 241 as the maximum depth of an element node, which is rather
less than 30000.

Yes, my software also calculates this value.
I wonder why the OP claimed a depth of 30000.