[postgis-users] pointcloud : change pcid ?

[Paul Ramsey]

Correct, I was thinking more PC_Transform(pcpatch, pcid), which would look
for common dimension names and map between them by default, or could maybe
accept a mapping (dim->dim) to control the conversion. But yes. Danger I
suppose in downgrading data (pushing a 4 byte into 2 byte) but that could
be left to users to avoid or not on their own (emit warnings on downgrades
maybe).

On Wed, Oct 29, 2014 at 4:54 AM, Rémi Cura <remi.cura at gmail.com> wrote:

> I'm sorry I think I was unclear.
> I don't want to acces point,
> I just want to change the pcid of a patch.
> For the moment it seems to imply a complete destruction/reconstruction of
> a new,
> which is really really not efficient.
>
> Basically in this case I would like a function PC_SetPCID(pcpatch)
> I understand that such function is very hard to create in the genral case,
> because you would have to put mappings between attributes.
>
>
> Cheers.
> Rémi-C
>
>
>
>
> 2014-10-28 19:08 GMT+01:00 Stephen V. Mather <svm at clevelandmetroparks.com>
> :
>
>  ​Ah. Yes, I think if you are accessing a point within a patch, you have
>> to unpack the patch. It's one of those tradeoffs...
>>
>>
>>    [image: http://sig.cmparks.net/cmp-ms-90x122.png] Stephen V. Mather
>> GIS Manager
>> (216) 635-3243 (Work)
>> clevelandmetroparks.com <http://www.clemetparks.com>
>>
>>
>>
>>
>>     ------------------------------
>> *From:* postgis-users-bounces at lists.osgeo.org <
>> postgis-users-bounces at lists.osgeo.org> on behalf of Rémi Cura <
>> remi.cura at gmail.com>
>> *Sent:* Tuesday, October 28, 2014 1:33 PM
>> *To:* PostGIS Users Discussion
>> *Subject:* Re: [postgis-users] pointcloud : change pcid ?
>>
>>  Now the only solution I found is to break a patch into point, then
>> break point into attributes,
>> then construct a  new point with correct pcid and attributes, then
>> construct a new patch !
>> Cheers,
>> Rémi-C
>>
>> 2014-10-28 17:31 GMT+01:00 Stephen V. Mather <svm at clevelandmetroparks.com
>> >:
>>
>>>  How do you mean? What are you doing now?
>>>
>>>
>>>    [image: http://sig.cmparks.net/cmp-ms-90x122.png] Stephen V. Mather
>>> GIS Manager
>>> (216) 635-3243 (Work)
>>> clevelandmetroparks.com <http://www.clemetparks.com>
>>>
>>>
>>>
>>>
>>>     ------------------------------
>>> *From:* postgis-users-bounces at lists.osgeo.org <
>>> postgis-users-bounces at lists.osgeo.org> on behalf of Rémi Cura <
>>> remi.cura at gmail.com>
>>> *Sent:* Tuesday, October 28, 2014 11:01 AM
>>> *To:* PostGIS Users Discussion
>>> *Subject:* [postgis-users] pointcloud : change pcid ?
>>>
>>>    Hey,
>>>  any pointcloud users has an idea about changing the pcid of a patch
>>> without breaking it into pieces?
>>>  Cheers,
>>> Rémi-C
>>>
>>> _______________________________________________
>>> postgis-users mailing list
>>> postgis-users at lists.osgeo.org
>>> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
>>>
>>
>>
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