[Liblas-devel] Squeeze me

[Etienne Bellemare Racine]

Howard Butler wrote :
> On Mar 8, 2010, at 1:09 PM, Etienne Bellemare Racine wrote:
>
>   
>>
>>     
>>> On Mar 8, 2010, at 12:52 PM, Etienne Bellemare Racine wrote:
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>>>       
>>>> That seems like a good idea. I was wondering if it would be possible, to add an option to also order the points coordinates in a spatial order instead of (I think) a temporal one, it would be much faster to scan the file that way to extract any point. within a given coordinate. Would it enter in the laszip specifications ? Of course, it would be much slower to write, I know, but it would be for a longtime gain in speed of reading. What do you think ?
>>>>     
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>>> Howard Butler wrote :
>>> You really mean you wish that fast spatial indexing and retrieval were available for LAS files :)  The next version of libLAS will have that too, actually.  I have already coded up some special cased examples of it (using parallel file storage of libspatialindex indexes), but I am hoping to implement something more generic.  This also might fall across the liblidar/lidarformat line as well, I don't know.
>>>
>>> Howard
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>> Yey ! So it's going to be in the code, not in the file... If I get it right. 
>>     
>
> yes.  you'd run 'lasindex myfile.las' and that would provide an index file alongside the las file that would support fast window searching
Could it be squeezed inside the laszip so you could carry only one file ?
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