I was wondering if it's possible to request via overpass API "any node that has at least one tag of any kind".
The only way I see right now is to sopecify all the existing tags in a huge union request (see below), or requesting nodes without the "tag filtering" at all, and getting many nodes that have no tag at all.
I will appreciate if you know a better solution.
Thanks!
[out:json];
(
node
["name"]
(50.6,7.0,50.8,7.3);
node
["amenity"]
(50.6,7.0,50.8,7.3);
AND SO ON (SPECIFY ALL THE OTHER TAGS)
);
out;
You can achieve this by using the following query:
[bbox:{{bbox}}];node[~"."~"."];out meta;
Example: http://overpass-turbo.eu/s/4Z4
Since version 0.7.54 you can also use the following approach:
[bbox:{{bbox}}];
node(if:count_tags() > 0);
out meta;
As far as I can see this is not possible at the moment. However you can post-filter the data using osmfilter / osmconvert.
Related
I'm attempting to setup a Graph which allows a query to follow "Redirect" edges from one vertex to another.
Vertices can only have a single Redirect edge going out; however, there may be a chain of Redirects that occur before reaching the final destination.
I'm attempting to grab the final vertex using the traversedElement function; however, even when I strip my implementation down to a query as simple as
select traversedElement(-1) from (traverse out() from #15:2)
I'm receiving the following error:
java.lang.InstantiationException: com.orientechnologies.orient.core.sql.functions.coll.OSQLFunctionTraversedElement
I'm not sure what the best way to debug this one might be, the simplified query I'm attempting above appears to match the documentation faithfully (documentation example):
SELECT traversedElement(-1) FROM ( TRAVERSE out() from #34:3232 WHILE $depth <= 10 )
Any words of wisdom would be greatly appreciated, thanks!
There was an issue with traversedElement() on last release (fixed on 2.0.7-SNAPSHOT). However you can use traversedEdge() and traversedVertex() that works.
In my project, I'm sending Gremlin scripts via the REST API of Orientdb.
I'm having problem returning the values inside sets collected during the graph traversal.
I have a simple Graph setup.
User-- FollowsMovies -- > Movies
User-- FollowsActors -- > Actors
u= g.v('12:1');
following= [] as Set;
u.as('x').out('FollowsMovies').aggregate(following).back('x').out('FollowsActors').aggregate(following);
return following.toString();
however, the script returns nothing. If I ask for size of 'following', it returns 0, although it is not supposed to be empty.
I Tried the same code on the gremlin console and it worked as expected. Can anyone suggest how to correctly output elements of a set?
Thanks for you help in advance.
Try to add iterate()at the end of your query.
See: http://gremlindocs.com/#methods/pipe-iterate
I'm trying to produce a query that will return all pages under a path where a property is NOT present.
Effectively I want the query builder query that will produce the following xpath: /jcr:root/content/site/my/path//element(*, cq:Page)[not(jcr:content/task/#finished)]
For CQ 5.3 the 'exists' property doesn't seem to be present (according to the docs: http://docs.adobe.com/docs/en/cq/5-3/javadoc/com/day/cq/search/eval/JcrPropertyPredicateEvaluator.html), however it looks like I can use 'not', so I've tried the following two examples but neither work as I expect in query debugger:
1
path=/content/site/my/path
type=cq:Page
property=jcr:content/task/finished
property.operation=not
2
path=/content/site/my/path
type=cq:Page
property=jcr:content/task/finished
property.operation=not
property.value=true
I've also seen pages that suggest these should work, and I can't seem to see any hotfixes that would cover fixing this (assuming it isn't actually working correctly).
Can anyone offer a solution or point out where I'm going wrong?
Using CQ 5.3, upgraded to crx 2.2.
Cheers
Chris
I have a few resource that I hope help you:
My blog post about query API options: http://itgumby.github.io/blog/2014/10/cq-queries-demystified/
6 Dimension's post about specific query examples: http://labs.sixdimensions.com/blog/2014-10-07/9-jcr-sql-2-queries-every-aem-dev-should-know/
Adobe QueryBuilder documentation: http://docs.adobe.com/docs/en/aem/6-0/develop/search/querybuilder-api.html
Non-empty SQL2 (From the 6D post):
SELECT * FROM [cq:PageContent] WHERE [jcr:title] IS NOT NULL
Which means you could convert that to WHERE [jcr:title] IS NULL
If using QueryBuilder predicates, the property generally won't exist (deleted from node) if it is false. Please manually verify in your case using CRX-DE lite and examining the node & its properties. If the property does exist, but its value is false, then:
path=/content/site/my/path
type=cq:Page
property=#jcr:content/task/finished
property.value=false
For any still struggling, this is how you do it
path=/content/site/my/path
type=cq:Page
property=jcr:content/task/finished
property.operation=exists
property.value=false
I'm trying to get all roads around a certain point. I'm using the following query:
(
way
(around:300,50.7913547,-1.0944082)
["highway"~"^(primary|secondary|tertiary|residential)$"]
["crossing"!~"."]
["name"];
>;
);
out;
I added the crossing exclusion because it kept including "markers" for crossings, and I'm only interested in roads.
However it seems to be ignoring the crossing and still plotting markers on the map, rather than just showing road outlines. This can be seen here.
These "nodes" that I don't want have the tags:
crossing=zebra
highway=crossing
which should fail my regex query, but it doesn't.
How do I get it to just return road plot lines, and none of these nodes/markers?
Sorry if my terminology is all wrong, I'm very new to this
The filter criterion you tried to use would only apply to the way itself rather than the nodes. Usually, a way wouldn't have a crossing tag, so this filter didn't have much of an effect on the final result. By using >; all of the nodes tags would shown up in the final result again.
I removed >; in your query and replaced out; by out geom; to only output the node lat/lon position without any tags.
You can try this out using the following link (currently pointing to overpass turbo beta)
Link
Using Foursquare api "Venue" service.. i am parsing nearByVenue details like shop, restaurant etc.
Suppose as an example i am getting following link:
https://api.foursquare.com/v1/venues.json?geolat=40.562362&geolong=-111.938689
Issue is I am getting only 10 nearbyDetails.. suppose I am standing in New York there should be number of venue details.. why I am getting only 10 details only ?
Is there any other service or i am following wrong approach to use it?
Thanks
Add l=n where n is your limit in query string. The default limit is set to 30.
https://api.foursquare.com/v1/venues.json?geolat=40.562362&geolong=-111.938689&l=10
https://api.foursquare.com/v1/venues.xml?geolat=40.562362&geolong=-111.938689&l=50&q=coffee
You can change the value of l="no of result" parameter.
And also if you want to search for particular keyword like ATM, Coffee
then you can add the parameter q and add it's value like q="atm", q="coffee", etc.
hope it will be helpful to you.