tag:blogger.com,1999:blog-401181380753971300.post4597684164875545749..comments2020-05-01T12:04:56.986-07:00Comments on Geospatial Data for Crime Analysis (geocrimedata): London street accessibility dataNick Mallesonhttp://www.blogger.com/profile/14332343657963894480noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-401181380753971300.post-81196248473558766012012-01-09T00:55:51.958-08:002012-01-09T00:55:51.958-08:00Dave, could you be a bit more specific? I'm no...Dave, could you be a bit more specific? I'm not entirely sure what you would like to achieve. Presumably you are aware of the Space Syntax work at UCL?Nick Mallesonhttps://www.blogger.com/profile/14332343657963894480noreply@blogger.comtag:blogger.com,1999:blog-401181380753971300.post-8456644768508035812012-01-08T10:03:18.479-08:002012-01-08T10:03:18.479-08:00I have just read "Mapping the East End Labryn...I have just read "Mapping the East End Labrynth" and I would like some suggestions on how to step into further detail as it regards flow of pedestrians and historical evidence. Thank Youdavehttps://www.blogger.com/profile/01363854870089108678noreply@blogger.comtag:blogger.com,1999:blog-401181380753971300.post-18557853065674080732011-10-24T06:55:55.074-07:002011-10-24T06:55:55.074-07:00Gregory, thanks for your advice. You're right ...Gregory, thanks for your advice. You're right that we need to differentiate between some of the types of roads. Footpaths could be useful though, you've made me realise that it might be worth developing separate estimates for pedestrian or vehicle accessibility. This might be particularly interesting if we want to analyse different types of crime.Nick Mallesonhttps://www.blogger.com/profile/14332343657963894480noreply@blogger.comtag:blogger.com,1999:blog-401181380753971300.post-84499141484174910802011-10-24T06:03:13.318-07:002011-10-24T06:03:13.318-07:00It looks like you've got all the footpaths (hi...It looks like you've got all the footpaths (highway=footway, highway=cycleway etc) from OSM and some very private roads (e.g. Buckingham Place).<br />The OpenStreetMap tagging gets quite complicated/bloated/extensive with the highway tag, values you probably want to look at are motorway, trunk, primary, secondary, tertiary, residential, unclassified, service, track, living_street. (selected from http://wiki.openstreetmap.org/wiki/Map_features#Highway) Unless you have decided it is helpful to include footpaths.Gregory Marlerhttps://www.blogger.com/profile/16334702270634854614noreply@blogger.comtag:blogger.com,1999:blog-401181380753971300.post-6161598282369119592011-10-14T06:11:41.893-07:002011-10-14T06:11:41.893-07:00Alastair,
We'll produce a proper report with ...Alastair,<br /><br />We'll produce a proper report with definitions and clear descriptions of these measures, but in the meantime here's a short description.<br /><br />Integration is a measure that can be used as a proxy for vehicle or pedestrian traffic volume. It is commonly used in the field of Space Syntax and is calculated seeing how well connected a road is to all other roads. For example, roads that are connected to many others are usually 'main roads' with lots of traffic, but those that are less connected are often cul-de-sacs or minor roads that have much lower traffic volumes. You can calculate integration just by looking at the structure of the road network, you don't need any other information.<br /><br />I shouldn't really have confused this formally defined mathematical term with the word 'accessibility' which, as far as I know, doesn't have such a clearly defined meaning. But I take them to mean similar things.Nick Mallesonhttps://www.blogger.com/profile/14332343657963894480noreply@blogger.comtag:blogger.com,1999:blog-401181380753971300.post-72394024244484192102011-10-14T05:31:35.127-07:002011-10-14T05:31:35.127-07:00Looks good .. but can you leave a clearer definiti...Looks good .. but can you leave a clearer definition of what you mean by integration? And accessibility?Alastair Dunninghttps://www.blogger.com/profile/01093222251178441334noreply@blogger.com