Re: [Qgis-developer] [Qgis-user] Centroid of polygon

2014-08-05 Thread Andreas Neumann
Hi,

For me it is very strange that

x(centroid($geometry))
y(centroid($geometry))

does not work in the QGIS expressions.

There is a $x and $y - but this does only work directly on a current
feature if it is a point feature.

The workaround with xmin/ymin

xmin(centroid($geometry))
ymin(centroid($geometry))

works, but seems cumbersome.

Could you open a ticket please?

Andreas

Am 04.08.2014 17:22, schrieb Goyo:
 This works in master:
 
 xmin(centroid($geometry))
 ymin(centroid($geometry))
 
 Goyo
 
 2014-08-04 18:28 GMT+02:00 Jonathan Moules 
 jonathanmou...@warwickshire.gov.uk:
 Hi list,
 Quick question, how do you use the Field Calculator to get the centroid as
 an attribute? I'm aware of this question answer:
 http://gis.stackexchange.com/questions/11705/using-field-calculator-in-qgis-to-update-columns-with-centroid-coordinates
 - but want to do it using just the field calculator.

 I see under Geometry that there's a centroid function, but can't figure
 out how to use it for this purpose.

 Suggestions welcome.
 Thanks,
 Jonathan

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Re: [Qgis-developer] [Qgis-user] Centroid of polygon

2014-08-05 Thread Jonathan Moules
Hi All,
Thanks for the replies, that did it.

I've opened https://hub.qgis.org/issues/11008 per Andreas' suggestion.

Cheers,
Jonathan



On 5 August 2014 10:58, Andreas Neumann a.neum...@carto.net wrote:

 Hi,

 For me it is very strange that

 x(centroid($geometry))
 y(centroid($geometry))

 does not work in the QGIS expressions.

 There is a $x and $y - but this does only work directly on a current
 feature if it is a point feature.

 The workaround with xmin/ymin

 xmin(centroid($geometry))
 ymin(centroid($geometry))

 works, but seems cumbersome.

 Could you open a ticket please?

 Andreas

 Am 04.08.2014 17:22, schrieb Goyo:
  This works in master:
 
  xmin(centroid($geometry))
  ymin(centroid($geometry))
 
  Goyo
 
  2014-08-04 18:28 GMT+02:00 Jonathan Moules 
 jonathanmou...@warwickshire.gov.uk:
  Hi list,
  Quick question, how do you use the Field Calculator to get the centroid
 as
  an attribute? I'm aware of this question answer:
 
 http://gis.stackexchange.com/questions/11705/using-field-calculator-in-qgis-to-update-columns-with-centroid-coordinates
  - but want to do it using just the field calculator.
 
  I see under Geometry that there's a centroid function, but can't
 figure
  out how to use it for this purpose.
 
  Suggestions welcome.
  Thanks,
  Jonathan
 
  This transmission is intended for the named addressee(s) only and may
  contain confidential, sensitive or personal information and should be
  handled accordingly. Unless you are the named addressee (or authorised
 to
  receive it for the addressee) you may not copy or use it, or disclose
 it to
  anyone else. If you have received this transmission in error please
 notify
  the sender immediately. All email traffic sent to or from us, including
  without limitation all GCSX traffic, may be subject to recording and/or
  monitoring in accordance with relevant legislation.
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