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colonel-mercator

v1.0.0

Published

[![Build Status](https://travis-ci.org/mapbox/colonel-mercator.svg)](https://travis-ci.org/mapbox/colonel-mercator)[![Coverage Status](https://coveralls.io/repos/mapbox/colonel-mercator/badge.svg?branch=master&service=github)](https://coveralls.io/github/

Downloads

3

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Links

Git

Maintainers

mapbox-adminmapbox-admin

Keywords

Readme

colonel-mercator

Build StatusCoverage Status

Gets raster pixel resolutions, and optionally snaps them to mapnik-omnivore tiling thresholds. Also, generates "metatile" zooms - the tile sizes at which a given input resolution would be over a size threshold based on an "upzoom" (the resolution of zoom levels "up")

image

Install

npm install colonel-mercator
npm link

Usage - resolution

colonel-mercator resolution <raster> --maxres <float> --snap

Arguments

<raster> [path]: an input tiff to get the resolution of

Options

--maxres [float]: the floor at which to set resolution; if maxres > the file's resolution, returns maxres. [DEFAULT=NONE] --snap [flag]: snap to mercator tiling thresholds [BETA] [DEFAULT=FALSE]

Usage - metatile

colonel-mercator metatile <resolution> --zoombreaks '[<int>, <int>, ...]' --upzoom <int>

Arguments

<resolution> [float]: the resolution to evaluate

Options

--zoombreaks [array of ints]: the metatile sizes to create [DEFAULT=[13, 10, 7, 4]]

--upzoom [int]: the number of zoom levels up at which to derive threshold from zoombreaks