Quanti-litativeRevolutioninGIS
Pre-NextLabLicenceinMaths,ULg
LicenceinComputerSciences,ULg
Geospatialspecialization,ULg
ManyyearsinGIS(IonicSoftwareanditsmutations)
Alwaysindatamanagementandsemantic
Newtechnologiesenthusiast
NextLabageProjectin fortheSPW
Projectin forVirdata
Wrotea aboutPlay!2
evangelist(OKFN,...), speaker
Distributed +Distributed expert
co-founder| organizer
Andthelistgoeson...andon...
@Noootsab
@NextLab_be
QualitativeGISCoinedin1963
Rastervulgus:BigFatMultiBandImages
SPOT(seelater)IKONOS(greek:image)LANDSATALOSQuickBird:resolution64cm→2m44cm
Vectorvulgus...nah,vector
FeatureextractionLandmeters(rare)Fieldsurveying~GPS(GNS)
hence,Producerswere...
Govs!
thus,Userswere
Govs!
Ohyeah,researchersaswell...huh!?wait!
Okay,veryfeeeewprivates
inconsequence,AnalyseswerePerformedbyexperimentedfolks......ornerds
finally,Toolswere...Youdon'tevenknowthem!
ESRI,OracleSpatial,OGC,RedSpider(yeah),...
QualitativeGIS"Started"around2000
Actually,notreallybefore2010
GISRevolutionInducetheoriesfromdata
Theriverhasfloodedon3km
Theriverwillfloodifitrainsmorethan...
NewproducersGoogle,4²,OSM,GPS
old:Mappy,Michelin,...
NewUsersDevs,Lambda
Billioooooons
AnalysesRouting,AccurateGWR¹,...
Disasterprediction,floodprevention,crashprobability,...
¹GeospatialWeightRegression
Tools?Userfriendlyand/orOpenSource
OSMGeoServer
GoogleMapsOpenLayers
QuantilitativeGISCoinedby@Noootsab^^
WTF?!
Rasterstoday(f.i.Spot7)RedGreenBlue+NearInfraRedBandsOneshot:60x60km(3.600sqkm)Takes3.600.000sqkmofgeodataperDAYResolution2satellitesat and2othersat
Revolution:110minutes26daystocompletethegeoid(allpiecesofcrapcovered)1singlef*****gfilefora60x60kmtileisworthupto
Vector(mostlyposition)
Twitter,Facebook,...Foursquare,InstagramWazeGoogle(initswhole)ConnectedDevices
everywhereandeverytime
Presidente
Model-Driven
Deductive
Top-Down
Quantitative
LaggedTime
Commandante
Data-Driven
Inductive
Bottom-Up
Qualitative
RealTime
GISPutschMarcelino
DataLake
MachineLearning
Variety
Value
Velocity
VOLUME?Itwasthereforages!
Who,What,HowYouthoughtIwasjoking,huh!
SocrataEvanChanusingSpark
Customershave pointdata(manymillionsof
rows)PostGIS:point-in-polygonandotherdoes
Partitioningpointdatain (tiling,Z-curve)
Partitionsinto forquickanalysis
Adding toSparkforspeedingup
AzaveaRobEmanueleonGeotrellis
Run ofclimatedataagainstdaily
temperatureandprecipitationdataoutto2009Createsuitabilitymapsoverhigh-resrasterlayersspanningthe forUrbanForestry
Modeling.
GeoTrellisisproviding withgeospatialcapabilities.
Ingest,mosaicandpyramidrasterdatainto
forfast(sub-500ms)tilefetching
SnipsRandHindiinhisLabs
Tranquilien: seatingavailabilityinpublic
transportRiskContext:Determiningtheriskofbicycleandcar
Using technologiesthatcanscalelinearly
(Akka,Scala)Thankstothebottomup ofthearchitecture,the
clusterskeepscrunchingdatainaresilientmanner
Done!Thx&cuonTwitter
@noootsab
@NextLab_be