I'm using OSMnx to get building footprints for buildings, expecting to put polygon data in grasshopper to generate building models for energy simulations. I already have building height data and other energy input for that. The question is I need building addresses along with geometry data (polygon) from OpenStreetMap to match the building height data I have.
I used ox.geometries_from_place('Helsingborg, Sweden', tags={'building':True}) to get polygons of building footprints but there are so many blank in address columns like addr:city, addr:street.... But I'm pretty sure there's data for this information because I can see the address info when searching the building on OpenStreetMap web.
For example, I searched the building called 'Furutorpsgatan 49A' in Helsingborg.
In OpenStreetMap, all the information looks fine, but in the data I extracted from OSMnx there's no address info
What should I do? Is there any mistake I made? Or Is there any other method to get building footprint data for a specific building?
Many thanks!
Related
I'm using OpenMapTiles to download OSM data and create a mbtiles with mapbox vector tiles. This all works great, except I'm targeting an embedded platform.
At zoom level 14 with the default extent of 4096, a single tile can be over 1MB and cover an entire city. Not only is that a huge file to process for an embedded platform, it also means you're potentially sifting through every house in an entire city. I went as far as writing a streaming protobuf parser, but it takes 10 minutes to just parse such a file.
How can I generate mapbox vector tiles with a smaller extent?
I found there appears to be a parameter for it, but can't figure out where it actually gets used to generate tiles and how to modify it: https://github.com/openmaptiles/openmaptiles-tools/blob/4cc6e88dfdef83de69bd49845e0f23908d9edecc/openmaptiles/sqltomvt.py#L25
I'm not married to openmaptiles, but it's what I'm currently using to download and process openstreetmap data.
in case others need it, use https://github.com/mapbox/tilelive and specify maxzoom you want
bin/tilelive-copy --minzoom=0 --maxzoom=10 ~/Apps/tileserver/tiles/osm-2017-07-03-v3.6.1-planet.mbtiles ~/Apps/tileserver/tiles/small-osm-2017-07-03-v3.6.1-planet.mbtiles
I'm now using OSMnx to extract data for buildings. What I need is to get building polygons through addresses. The question I met is about some of the buildings have multiple addresses, thus there are no address data for that building's polygon.
For example, the building 'Furutorpsgatan 49A' (in Helsingborg, Sweden) has three nodes you can search for, which are:
Furutorpsgatan 49A; Furutorpsgatan 49B; Gustav Adolfs Gata 23
But if you export the geometry data (polygon), there's no address data at all! In another word, there's no way to get the building polygon except for three nodes inside.
I was trying to use OSMid for polygons to match the position, but I can't find the building with OSMid 'w483244917'
Then I'm thinking is there any method I can extract the polygon data through one or several nodes inside?
Or could you suggest me some methods to get any building footprint polygons through building addresses?
Or is there a plugin for grasshopper to get building footprints by addresses?
Thank you!
When I upload two shapefiles to ArcMap they are not overlapping. I have to click "Zoom to Layer" to see each one. I know I have to change the coordinate systems but I am unsure how... If anyone would like to see the data I am using, I am using an Oklahoma Counties Shapefile and the Tornado Shapefile provided by NOAA. The links to each are provided below:
Oklahoma Counties Link I downloaded the statewide shapefile
Tornado Link: I downloaded the torn.zip for tornadoes from 1950-2016
How do I get these two shapefiles to overlap? I have spent hours trying to figure this and have been reading/searching other posts but but I am not getting anywhere. Any help that can be provided would be great!
There is no projection defined on the county shapefile .Use the Define projection tool to project it to the projection defined in the textfile.Its(Geographic Coordinate system,NAD1983_2011) .
Also to better help overlay them add the USA counties data from ArcGIS Online and then proceed to add the county and tornado shapefiles and it seemed to work just fine
I have attached a picture below with a definition query on the tornado file to Oklahoma city.
image1
I need to calculate the distance between two points in a map in the same way as Google Maps' distance matrix and get direction APIs.
Since I have to use offline more, I have to work with OpenStreetMap data.
I have downloaded the planet.osm file for the map data. How do I calculate the distance between two points with the OpenStreetMap file?
There are already several routing solutions for OpenStreetMap (OSM), including various web services, standalone programs, and libraries. You are probably interested in one of the many offline routers.
Is there a way to create a heat map in google earth, so areas with higher values (of some specified parameter, such as population) appear as hotspots?
This seems possible.
For instance, take a look at those few links :
Disclaimer : I've tried none of those
HeatMapAPI.com
And an example
But I'm not sure how you'd do it ; seems related to .NET and a dll in some way... so might not be as nice as it seems...
Density Mapping in Google Maps with HeatMapAPI
Heat Maps for Google Maps - (a.k.a GeoIQ mashup)
Using Google Maps to Produce Heat Maps
You've got a couple of links in those articles too ; some might be interesting too.
My colleague developed an open source java program that will generate 3D heat maps (KML) files for Google Earth from simply formatted XML data files. It may be of use. The entire project code is up at https://github.com/Noblis/OSAT You can ignore the bulk of what's there, and focus on GUIMain and the supporting files. There's sample files and documentation. I'd call it about a 0.5 version - it works, we used it in our studies, but there's some rough edges. It was done for transportation accessibility studies, but you can change the parameters you're graphing to anything you want, run from command line, whatever.
You can use the vertical axis to either view the same parameter as is used for the color OR use it to map an entirely different variable.
Here's two screen shots so you can see what it does:
tool interface:
example 3D output:
You can create polygons in a KML file and set the color of them. You can also make the polygons 3D, with height perhaps representing temperature.
There is also http://www.openheatmap.com, which offers free heatmaps on top of OpenStreetMap from a CSV upload.
Try free API heat maps. A really interesting implementation : http://en.tixik.com/tools/heatmaps
HeatmapTool.com can take a CSV file of coordinates and intensity values to generate heat map tiles for Google Maps.