From 0e36705046a206e990cad21d9b7891ddeaf47e2d Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Wed, 21 May 2025 17:51:48 +0200
Subject: MVT: Lower max-zoom to 7 (8m/px) from 9 (2m/px).
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The webmap currently doesn't go beyond zoom level 7 (8m/px) so it makes
little sense to create tiles for higher zoom levels.

It speeds things up and saves CPU resources and disk space, too.  For
group ‘ren’ on the desktop (GPKG destination dataset), before
(max-zoom=9):

    INFO: Exported 4488 features to 4 MVT layers in 00:06:02.926
    INFO: Tile count: 75972 [min=33 B, max=128.16 kiB, sum=15.10 MiB, avg=208 B]

vs. after (max-zoom=7):

    INFO: Exported 4488 features to 4 MVT layers in 00:00:25.548
    INFO: Tile count: 5031 [min=35 B, max=128.16 kiB, sum=4.80 MiB, avg=0.98 kiB]
---
 config.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'config.yml')

diff --git a/config.yml b/config.yml
index 11201bd..76e082a 100644
--- a/config.yml
+++ b/config.yml
@@ -26,7 +26,7 @@ extent:
 # https://gdal.org/en/latest/drivers/vector/mvt.html
 vector-tiles:
   min-zoom: 0 # res. 1024m/px
-  max-zoom: 9 # res. 2m/px
+  max-zoom: 7 # res. 8m/px
   max-size: 4194304
   max-features: 262144
   tiling-scheme:
-- 
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