Hi,
I wondered about the speed of some vector modules (in ref of some
recent tickets). Checking and running
cd vector/
grep db_create_index2 */*.c
I see that this function is used here and there. As far as I
understand it generates an index
https://grass.osgeo.org/programming7/c__create__idx_8c.html#a25be9e2d14109e9e6c6fd9305ff4201e
Questions: is it underused? Could we gain some speed using it consistently?
Markus
On 27/09/15 14:39, Markus Neteler wrote:
Hi,
I wondered about the speed of some vector modules (in ref of some
recent tickets).
Which tickets are your specifically referring to ?
Checking and running
cd vector/
grep db_create_index2 */*.cI see that this function is used here and there. As far as I
understand it generates an index
https://grass.osgeo.org/programming7/c__create__idx_8c.html#a25be9e2d14109e9e6c6fd9305ff4201eQuestions: is it underused? Could we gain some speed using it consistently?
Probably, yes, but one of the biggest bottleneck for me at this point is copying of attributes. See #2587. As discussed #513, this also raises the question of possibly completely dropping dbf in order to profit from (generally) faster SQL features.
Moritz