[Qgis-user] data defined labelling field details?

[Alex Mandel]

Last I read, you can create an X and Y columns and leave them blank if
you want auto placement to occur (with new symbology). This also wraps
into the new ability(might be another plugin) to simply drag a label to
a new location and have it update the table automatically with the new
coordinates of the label.

Haven't really tried, just remember reading that somewhere.

Thanks,
Alex

On 01/11/2011 09:07 AM, Marco Hugentobler wrote:
> Am Sonntag, 9. Januar 2011, um 16.22:05 schrieb William Kyngesburye:
>> No, I did not set the X,Y data fields - I want the X,Y to be the point
>> coordinates (maybe a distance from), so the X,Y data fields is redundant
>> and I'd have to figure out and fill in all the coordinates.
> 
> Hm, right. This is one of the few cases where I'd still recommend the old 
> symbology engine ;-) 
> 
>> so the X,Y data fields is redundant
>> and I'd have to figure out and fill in all the coordinates.
> 
> Maybe a tool that creates columns with x-/y-values for point position / 
> polygon centroid / line center could solve the problem (e.g. in the field 
> calculator). There will be redundancy, but it is a special case that the 
> labels for a point layer are directly on the point location (covering the 
> point symbol). In general, it will be good to have feature position and label 
> position separated.    
> 
> Regards,
> Marco
> 
>  
>> On Jan 9, 2011, at 4:23 AM, Marco Hugentobler wrote:
>>> Hi William
>>>
>>> Could it be that data defined x-/y-fields were not enable in your case?
>>>
>>> Data defined alignment or rotation is only useful if the label position
>>> is data defined too (otherwise, the PAL library calculates position and
>>> rotation).
>>>
>>> Regards,
>>> Marco
>>>
>>> Am Sonntag, 9. Januar 2011, um 00.06:04 schrieb William Kyngesburye:
>>>> Well, one problem - I can't set a data column for horiz/vert alignment
>>>> or rotation on any layers, the popup menu is disabled.
>>>>
>>>> If I use the "old" labelling, I can set placement data column.  What are
>>>> the values to use here?
>>>>
>>>> On Jan 8, 2011, at 4:29 PM, William Kyngesburye wrote:
>>>>> Thanks.
>>>>>
>>>>> On Jan 8, 2011, at 4:06 PM, Marco Hugentobler wrote:
>>>>>> Hi William
>>>>>>
>>>>>> Do you use the new labeling?
>>>>>> If yes:
>>>>>>
>>>>>> bold/italic/underline/strikeout expect int (0 means false )
>>>>>>
>>>>>>> Spell out placement strings? ("Above Left", ...)  Or some sort of
>>>>>>> abbreviations?  Or maybe it's an integer lookup of the placements?
>>>>>>
>>>>>> Strings
>>>>>> For horizontal alignment: 'Left', 'Center', 'Right'
>>>>>> For vertical alignment: 'Bottom', 'Base', 'Half', 'Top'
>>>>>>
>>>>>>> Color - RGB values (in a char field)?
>>>>>>
>>>>>> Hex representation, e.g. #ff0000 for red
>>>>>>
>>>>>> Regards,
>>>>>> Marco
>>>>>>
>>>>>> Am Samstag, 8. Januar 2011, um 19.20:21 schrieb William Kyngesburye:
>>>>>>> I want to try some data defined labelling, but I could not find any
>>>>>>> info about how to configure data fields.
>>>>>>>
>>>>>>> Some of them look obvious, like integers or floats/reals for sizes
>>>>>>> and offsets, and character/varchar for font.
>>>>>>>
>>>>>>> Maybe boolean for bold/italic/underline/strike?  Or does Qgis want a
>>>>>>> char representation of a boolean for these?
>>>>>>>
>>>>>>> Placement I think should be a char field, but what are the values to
>>>>>>> use? Spell out placement strings? ("Above Left", ...)  Or some sort
>>>>>>> of abbreviations?  Or maybe it's an integer lookup of the
>>>>>>> placements?
>>>>>>>
>>>>>>> Color - RGB values (in a char field)?  what separator to use?
>>>>>>>
>>>>>>> Any other details other details I didn't think of to ask about?
>>>>>>>
>>>>>>> -----
>>>>>>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>>>>>>> http://www.kyngchaos.com/
>>>>>>>
>>>>>>> "Those people who most want to rule people are, ipso-facto, those
>>>>>>> least suited to do it."
>>>>>>>
>>>>>>> - A rule of the universe, from the HitchHiker's Guide to the Galaxy
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Qgis-user mailing list
>>>>>>> Qgis-user at lists.osgeo.org
>>>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>>
>>>>> -----
>>>>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>>>>> http://www.kyngchaos.com/
>>>>>
>>>>> "Mon Dieu! but they are all alike.  Cheating, murdering, lying,
>>>>> fighting, and all for things that the beasts of the jungle would not
>>>>> deign to possess - money to purchase the effeminate pleasures of
>>>>> weaklings.  And yet withal bound down by silly customs that make them
>>>>> slaves to their unhappy lot while firm in the belief that they be the
>>>>> lords of creation enjoying the only real pleasures of existence....
>>>>>
>>>>> - the wisdom of Tarzan
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Qgis-user mailing list
>>>>> Qgis-user at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>
>>>> -----
>>>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>>>> http://www.kyngchaos.com/
>>>>
>>>> "This is a question about the past, is it? ... How can I tell that the
>>>> past isn't a fiction designed to account for the discrepancy between my
>>>> immediate physical sensations and my state of mind?"
>>>>
>>>> - The Ruler of the Universe
>>
>> -----
>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>> http://www.kyngchaos.com/
>>
>> All generalizations are dangerous, even this one.
> 
>