ExternalVendorCode/tippecanoe
1
0
Fork 0
mirror of https://github.com/mapbox/tippecanoe.git synced 2025-02-01 08:47:57 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add a table of zoom level precisions to the documentation

Browse Source
This commit is contained in:
Eric Fischer 2018-12-11 17:51:44 -08:00
parent ca4aad0c64
commit 5f1c0e151f
2 changed files with 65 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
README.md
View File

@ -323,6 +323,29 @@ Parallel processing will also be automatic if the input file is in Geobuf format
* `-R` _zoom_`/`_x_`/`_y_ or `--one-tile=`_zoom_`/`_x_`/`_y_: Set the minzoom and maxzoom to _zoom_ and produce only
the single specified tile at that zoom level.
If you know the precision to which you want your data to be represented,
this table shows the approximate precision corresponding to various
`-z` options if you use the default `-d` detail of 12:
zoom level | precision (ft) | precision (m)
---------- | -------------- | -------------
`-z0` | 32000 ft | 10000 m
`-z1` | 16000 ft | 5000 m
`-z2` | 8000 ft | 2500 m
`-z3` | 4000 ft | 1250 m
`-z4` | 2000 ft | 600 m
`-z5` | 1000 ft | 300 m
`-z6` | 500 ft | 150 m
`-z7` | 250 ft | 80 m
`-z8` | 125 ft | 40 m
`-z9` | 64 ft | 20 m
`-z10` | 32 ft | 10 m
`-z11` | 16 ft | 5 m
`-z12` | 8 ft | 2 m
`-z13` | 4 ft | 1 m
`-z14` | 2 ft | 0.5 m
`-z15` | 1 ft | 0.25 m
### Tile resolution
* `-d` _detail_ or `--full-detail=`_detail_: Detail at max zoom level (default 12, for tile resolution of 2^12=4096)

42
man/tippecanoe.1
View File

@ -385,6 +385,48 @@ specified maximum zoom and to any levels added beyond that.
\fB\fC\-R\fR \fIzoom\fP\fB\fC/\fR\fIx\fP\fB\fC/\fR\fIy\fP or \fB\fC\-\-one\-tile=\fR\fIzoom\fP\fB\fC/\fR\fIx\fP\fB\fC/\fR\fIy\fP: Set the minzoom and maxzoom to \fIzoom\fP and produce only
the single specified tile at that zoom level.
.RE
.PP
If you know the precision to which you want your data to be represented,
this table shows the approximate precision corresponding to various
\fB\fC\-z\fR options\fB\fCif you use the default\fR\-d` detail of 12:
.TS
allbox;
cb cb cb
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
l l l
.
zoom level precision (ft) precision (m)
\fB\fC\-z0\fR 32000 ft 10000 m
\fB\fC\-z1\fR 16000 ft 5000 m
\fB\fC\-z2\fR 8000 ft 2500 m
\fB\fC\-z3\fR 4000 ft 1250 m
\fB\fC\-z4\fR 2000 ft 600 m
\fB\fC\-z5\fR 1000 ft 300 m
\fB\fC\-z6\fR 500 ft 150 m
\fB\fC\-z7\fR 250 ft 80 m
\fB\fC\-z8\fR 125 ft 40 m
\fB\fC\-z9\fR 64 ft 20 m
\fB\fC\-z10\fR 32 ft 10 m
\fB\fC\-z11\fR 16 ft 5 m
\fB\fC\-z12\fR 8 ft 2 m
\fB\fC\-z13\fR 4 ft 1 m
\fB\fC\-z14\fR 2 ft 0.5 m
\fB\fC\-z15\fR 1 ft 0.25 m
.TE
.SS Tile resolution
.RS
.IP \(bu 2