On 22/10/10 13:18, Howard Butler wrote:
On Oct 21, 2010, at 3:57 PM, Gary Huber wrote:
Mateusz Loskot wrote:
I think we should extract a lightweight LASHeaderReader from
LASReader for uses cases like the above, to avoid setting up
complete reading engine if user wants to get header only.
I absolutely agree. In cases where the index is stored in a
separate file I am initializing two Readers - one to read the
index, which is only a header but has the number of points
specified in it even though they aren't in the index file, and one
Reader for the file with the actual point data. So right there -
two huge arrays one of which will never be used at all.
I think it would be sufficient to have both the CachedReaderImpl and
the regular ReaderImpl make sure that they don't do any big
initialization of things like the mask arrays until they try to read
their first point. I will take this as a task for next week.
Hobu,
Your solution would work for me very well.
No need to have separate reader then.
Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org
Member of ACCU, http://accu.org
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