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Howard Butler wrote :
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<pre wrap="">On Mar 8, 2010, at 1:09 PM, Etienne Bellemare Racine wrote:
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<pre wrap="">On Mar 8, 2010, at 12:52 PM, Etienne Bellemare Racine wrote:
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<pre wrap="">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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<pre wrap="">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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<pre wrap="">Yey ! So it's going to be in the code, not in the file... If I get it right.
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yes. you'd run 'lasindex myfile.las' and that would provide an index file alongside the las file that would support fast window searching</pre>
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Could it be squeezed inside the laszip so you could carry only one file
?<br>
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