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Diffstat (limited to 'framework/src/onos/web/gui/src/main/webapp/data/map/README.txt')
| -rw-r--r-- | framework/src/onos/web/gui/src/main/webapp/data/map/README.txt | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/framework/src/onos/web/gui/src/main/webapp/data/map/README.txt b/framework/src/onos/web/gui/src/main/webapp/data/map/README.txt deleted file mode 100644 index 5cd26346..00000000 --- a/framework/src/onos/web/gui/src/main/webapp/data/map/README.txt +++ /dev/null @@ -1,61 +0,0 @@ -see: http://bost.ocks.org/mike/map/ - -brew install gdal -npm install -g topojson - -To generate continental US map: - - $ wget 'http://www.naturalearthdata.com/download/50m/cultural/ne_50m_admin_1_states_provinces_lakes.zip' - $ unzip ne_50m_admin_1_states_provinces_lakes.zip - $ ogr2ogr -f GeoJSON -where "sr_adm0_a3 IN ('USA')" states.json ne_50m_admin_1_states_provinces_lakes.shp - -edit states.json to remove data for Hawaii and Alaska - - $ topojson states.json > topology.json - - -The .shp file above is incomplete (USA and part of Candada.) -So it may be that each region requires a bit of research to generate. -Ideally a source for public domain shp files can be found that covers all geographic regions. - - -For Canada: - - # wget 'http://www12.statcan.gc.ca/census-recensement/2011/geo/bound-limit/files-fichiers/gpr_000b11a_e.zip' - # unzip gpr_000b11a_e.zip - # ogr2ogr -f "GeoJSON" -s_srs EPSG:21781 -t_srs EPSG:4326 canada.json gpr_000b11a_e.shp - # topojson --id-property CFSAUID -p name=PRNAME -p name canada.json > topology.json - - -This produces a very large (5MB) file and draws very slowly in Chrome. -So some additional processing is required to simplify the geometry. (It is not checked in.) - -Also, the specification of object structure within the geojson is unclear. -In the US map the geojson structure is - - json.objects.states - -but in the Canadian data it's - - json.objects.canada - - -Lastly, the projection that is used may be tailored to the region. -The preferred projection for the US is "albers" and d3 provides a "albersUSA" which can be used to - project hawaii and alaska as well - -For Canada, apparantly a "Lambert" projection (called conicConformal in d3) is preferred - -see: - https://github.com/mbostock/d3/wiki/Geo-Projections - http://www.statcan.gc.ca/pub/92-195-x/2011001/other-autre/mapproj-projcarte/m-c-eng.htm - - -Summary: -- some additional work is required to fully generalize maps functionality. -- it may be worthwhile for ON.LAB to provide the topo files for key regions since producing these - files is non-trivial - - - - |