Mapping A Disaster

Mapping a Disaster Anthony Baxter, Google arb@google.com

February 7, 2009 Worst ﬁres in Australian history

173 dead

horriﬁc conditions 46.4C !

ﬁres started sat 7 feb

ﬁres started sat 7 feb still danger a week+ later

ﬁres started sat 7 feb still danger a week+ later some ﬁres burned a month

4,500 km 2 of land burned

many ﬁres, across the state

up to date information

ABC radio government broadcaster ofﬁcial emergency response network 24/7 radio coverage

ofﬁcial sources

ofﬁcial sources Country Fire Authority: private lands www.cfa.vic.gov.au

ofﬁcial sources Country Fire Authority: private lands www.cfa.vic.gov.au Dept of Sustainability and Environment: public lands www.dse.vic.gov.au

problem #1

problem #1 server load 500 Server Error

problem #2

problem #2 locating these places

my brother lives here

friend lives my brother here lives here

friendʼs elderly parents here friend lives my brother here lives here

but where are the ﬁres?

who needs to know?

who needs to know? people in danger

who needs to know? people in danger friends and family

who needs to know? people in danger friends and family people following the news

sunday morning

sunday morning started thinking we should do something

version one scrape CFA RSS geocode locations publish as a ﬂash map

mapvisage.appspot.com

6 hours initial development

6 hours initial development (2 hours of that on ﬂash/IE debugging)

version two automate geocoding georss.org google maps API auto-refresh the map search, links to relief agencies

<georss:point> 143.74774 -37.52654 </georss:point> <georss:featuretypetag> point </georss:featuretypetag>

slight issue

slight issue Fire service data not always clean

slight issue Fire service data not always clean “5KM SE WARBUTON TRK”

step three

step three satellite imagery

NASA MODIS

NASA MODIS TERRA and AQUA

NASA MODIS TERRA and AQUA 250m resolution

NASA MODIS TERRA and AQUA 250m resolution daily coverage

NASA MODIS TERRA and AQUA 250m resolution daily coverage IR detectors

NASA MODIS TERRA and AQUA 250m resolution daily coverage IR detectors rapidfire.sci.gsfc.nasa.gov

polar orbit

polar orbit online within a few hours

serving the images

serving the images geotiff images

serving the images geotiff images standard format for map tiles

serving the images geotiff images standard format for map tiles standard ﬁle names

serving the images geotiff images stitch them together standard format for map tiles standard ﬁle names

problem

Googleʼs map tile pipeline not suited to smaller jobs

Googleʼs map tile pipeline not suited to smaller jobs or repeated, fast turnaround jobs

maptiler

maptiler gdal2tiles (summer of code)

maptiler gdal2tiles (summer of code) geotiff ⇓ tile images

appengine not currently good at lots of ﬁles

appengine not currently good at lots of ﬁles serve from zip ﬁles

appengine not currently good at lots of ﬁles serve from zip ﬁles 6 zoom levels ~1000 images

HTTP Expiry Headers

HTTP Expiry Headers Google Front Ends

HTTP Expiry Headers Google Front Ends Image tiles cached

HTTP Expiry Headers Google Front Ends Image tiles cached code open sourced “mapvisage” on google code

HTTP Expiry Headers Google Front Ends Image tiles cached code open sourced “mapvisage” on google code warning: code not the prettiest

Automated tile generation

Automated tile generation mostly

Automated tile generation mostly stupid clouds

made map embeddable

made map embeddable news sites

made map embeddable news sites blog posts

made map embeddable news sites blog posts homepage promo

made map embeddable news sites blog posts homepage promo peak: 8M map views/day sustained: 60 hits/sec

beneﬁts

beneﬁts reassurance for the worried

beneﬁts reassurance for the worried better understanding of the ﬁre scale

benefits reassurance for the worried better understanding of the fire scale took load off fire service websites

lesson enable people to reuse your data

geocoded RSS ➙ maps = map of family/friends

going forward

geocoded RSS

geocoded RSS more please

more than ﬁres

geo spatial information conveys vital information

disasters

disasters alerts

disasters alerts evacuations

loss of control?

loss of control? something that frightens agencies

loss of control? something that frightens agencies donʼt be scared ☺

create clear license

create clear license lay out terms for re-use

for instance

for instance attribution

for instance attribution links

for instance attribution links timeliness

structure

structure RSS/Atom are obvious choices

structure RSS/Atom are obvious choices think: how can I expose this data as RSS?

RSS/Atom

RSS/Atom browsers/readers

RSS/Atom browsers/readers services to forward to SMS

structure

structure attach times to data

structure attach times to data attach locations to data

structure attach times to data attach locations to data donʼt make people guess

structure attach times to data attach locations to data donʼt make people guess use georss

you arenʼt the only one who can ﬁnd a use for your data

open data

open data especially when lives may depend on it

you can make a difference

Mapping A Disaster

by Harisfazillah Jamel

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