Hi all: I have a Perl script that runs against a shapefile to project a
geometry centroid from UTM to Lat/Lon. Code looks something like this:
my $proj_26915 = new mapscript::projectionObj('epsg:26915');
my $proj_4326 = new mapscript::projectionObj('epsg:4326');
while (my $shape = $layer->nextShape()) {
my $point = $shape->getCentroid();
$point->project($proj_26915, $proj_4326);
# do something with $point
}
I get the following representative timings with ~250 polygon geometries in
the shapefile.
MapServer 7.4 + Proj 6.2.1 = 0m0.180s
MapServer 7.6 + Proj 6.2.1 = 0m7.000s
MapServer 8.0 (main) + Proj 7.2.1 = 0m4.300s
Huge difference and things kinda become unusable. Things improve a bit with
newer versions but the performance hit is substantial. I thought at first
that it was the projection initialization that was taking all the time but
it's actually the "$point->project($proj_26915, $proj_4326);" statement.
Perhaps I'm doing something wrong?
--Steve
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