Clifford Snow bio photo

Clifford Snow

Clifford is described as an OpenStreetMap Supper Mapper. He started contributing to OSM in May 2011. Hosts OpenStreetMap-Central-Salish-Sea Meetup Group located in Mount Vernon, WA. He help organize the 2016 State of the Map US in Seattle. His prior endeavors include glassblowing, managing an art center facility and telecom management.

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All Posts

2019

Mapping Sidewalks a HowTo

Detailed instructions on how to map sidewalks, curbs, crosswalks, etc. for pedestrian routing

2018

Declarative Partition Postgresql 10

Steps to convert an existing table to a declarative partition in Postgresql 10

Creating a USFS Roads Background Layer for JOSM in Mapbox

This article explores my learning how to create a background layer in Mapbox for use in JOSM.

2016

Rasar State Park

trails in rasar state park

Running Missing Maps Mapathons

Lessons Learned from running Mapathons for Missing Maps

2015

Open GIS Data in Washington Counties

A county by county look at the availability of open gis data.

Why OpenStreetMap

Response to my questions

Prompt for OSM User ID in JOSM:Using a Mac

Applescript Code for a JOSM prompt

Sidewalks of Mount Vernon Washington

Walking in Mount Vernon

2014

More Seattle Duplicate Address

Latest test for duplicate addresses

OpenStreetMap 10th Anniversary

Recap of 10th Anniversary Celebration in Seattle

JOSM Background Layer

Easy way to server tiles locally

Too Many Airports

The FAA doesn't want you to fly your drone within 3 miles of an airport

Finding Differences in Roads

Using Open Source Tools to Find Differences in Road Data

JSOM Allows HTTPS

You can now protect your password over the internet

Fixing Duplicates in OSM

It is way too easy to create duplicate addresses in OSM with existing editor

Duplicate addresses in Seattle

It was pointed out that Seattle has a number of duplicate addresses in OSM. Running a query in overpass convinced me ...

Duplicate addresses in Seattle

It was pointed out that Seattle has a number of duplicate addresses in OSM. Running a query in overpass convinced me ...