I want to export a Munich map from OSM for SUMO Simulator. I've managed to download such a map from bbbike.de(472MB), but when I'm converting it to .net.xml with netconvert I'm getting a lot of warnnings and the simulator cannot import the map ("Loading error"). Do you have any idea how can I convert correctly the map (or do you think it is because the big volume of the file?), or where could I get such a map(in a properly sumo format = xml, I acctualy need just the highways, I've tried to select just highways with osmosis but I have the same problem in the end)?
Ok to summarize our experience and to close this question :)
SUMO has problems with parsing big full OSM files. So you need to cut the area and filter for highways with osmosis:
Get the state of bavaria or of the surrounding http://download.geofabrik.de/europe/germany/bayern/oberbayern.html
osmosis --read-pbf ./oberbayern-latest.osm.pbf --bounding-box top=48.3298 left=11.2699 bottom=48.0460 right=11.8948 --write-xml ./munich.xml
osmosis --read-xml ./munich.xml --tf accept-ways highway=* --used-node --write-xml ./munich_streets.xml
This can be loaded to SUMO, esp. with the eWorld GUI.
Related
I'd like to export the boundaries (perimeter) of a place. For instance, consider the boundaries of the University of Illinois at Chicago at this link.
I see it's pretty easy to export an OSM file. But how can I export only that red line (perimeter)?
I don't need a script to do that, even a manual solution would be fine. I tried to navigate the UI for quite a time, but I couldn't find a way.
My ultimate goal is to convert the boundaries to a GeoJson.
You can use the Overpass API for this.
Go to https://overpass-turbo.eu and enter the following script:
[out:json][timeout:25];
way(210649421);
out geom;
The way-Id was taken from your link.
Then click on Run.
Afterwards, you can switch to the Data tab in the top right and copy the JSON for this area.
Alternatively, you can also use Export -> "raw data directly from Overpass API" to directly download a JSON payload, bypassing the browser output. For GeoJSON output, use Export -> "download/copy as GeoJSON" instead.
in the tutorial it is shown how to start an OSRM server with this example :
wget http://download.geofabrik.de/europe/germany/berlin-latest.osm.pbf
osrm-extract berlin-latest.osm.pbf -p profiles/car.lua
osrm-contract berlin-latest.osrm
osrm-routed berlin-latest.osrm
I would like to start a server not only on Berlin dataset, but on a full country dataset. For instance all German country roads. Maybe there is something to do with the contract, but i don't really know what king of .osrm i should put as argument to tell it to use a larger dataset that would be the combination of several dataset.
I think the answer should be really obvious when we know it, but it still feel a bit wooly.
Thank you.
According to an OSRM issue it is not possible to merge .osrm files. However you can merge multiple PBF files before generating your .osrm files.
Merging of OSM XML or PBF files can be done with osmium:
osmium merge file1.osm.pbf file2.osm.pbf -o merged.osm.pbf.
Or with osmosis:
osmosis --rb file1.osm.pbf --rb file2.osm.pbf --m --wb merged.osm.pbf
wget http://download.geofabrik.de/europe/germany-latest.osm.pbf
osrm-extract germany-latest.osm.pbf -p profiles/car.lua
osrm-contract germany-latest.osrm
osrm-routed germany-latest.osrm
Should work, but please note it will require around 16GB of RAM and probably a similar amount of disk space.
EDIT:
After clarification what you will need to do is merge the .osm.pbf files using the osmium tool.
./osmium merge first.osm.pbf second.osm.pbf third.osm.pbf -o result.osm.pbf
I want to make a network graph which shows the distribution of our documents in our folder structure.
I have the nodefile, edgefile and gephi graph file in this location:
https://1drv.ms/f/s!AuVfRBdVHkO7hgs5K9r9f7jBBAUH
What I do is:
Run the algorithm ForceAtlas2 with scaling 10-20, dissuade hub marked and prevent overlap marked, all other standard setting.
What I get is a graph with groups radial/spherical distributed. However, what I want is a tree directed network graph.
Anyone know how I can adjust Gephi to make this?
Thanks!
I just found a solution.
I tested the file format as shown on the Yed site "import excel file" page
http://yed.yworks.com/support/manual/import_excel.html
This gave me the Yed import dialog (took a life time to figure out that it's a pop up menu and not selectable through the standard menu)
Anyway, it worked and I've adjusted the test files with the data prepared for the Gehpi. This was pretty easy, I could used the source target ID's etc. Just copy paste.
I load it into Yed and used some directed and radial clustering algorithms on it. Works fine!
Below you can find the excel node/edge file used to import in Yed and the graph file you can open with Yed to see the final radial result.
https://1drv.ms/f/s!AuVfRBdVHkO7hg6DExK_eVkm5_mR
Only thing to figure out is how to combine the weight (which represents the number of documents) with the node size.
Unfortunately, as of version 0.9.0, Gephi no longer supports hierarchical graphs. Maybe try using a previous version?
Other alternatives involve more complex software, such as Graphviz, but you need a .dot file instead of your .csv. I looked all over, but could not find an easy-to-use csv to dot converter.
You could try looking at d3-hierarchy, a node.js program, but then again you need to use the not-so-user-friendly npm. If you look at the link, it looks like it can produce the kind of diagram you're looking for.
*.pbf("Protocolbuffer Binary Format") is primarily intended as an alternative to the XML format.
There are two formats of *.osm.pbf and *.vector.pbf. What tools can I use to open these files? (I know JOSM can open *.osm.pbf files, but it can't open *.vector.pbf files.)
If I want to write own *.vector.pbf files in Mapbox, how do I work for that?
Thanks!
Regarding question #2, extracting PBF data
Using GDAL's ogr2ogr is the easiest method (I found).
Given a file named 1583.vector.pbf decode it to a, for example, shapefile (folder) named output:
# cmd show prog. output format output name input name
ogr2ogr -progress -f "ESRI Shapefile" output 1583.vector.pbf
Regarding question #3, creating PBF data
Use the same command as above but swap the input/outputs and output format:
# example source: https://gdal.org/drivers/vector/mvt.html
ogr2ogr -f MVT mytileset source.gpkg -dsco MAXZOOM=10
The Vector tiles used by Mapbox are serialized as Protocol Buffers.
Protocol Buffers allow you to efficiently compress the vector data inside the tile.
The Mapbox Tile Specification is available on github.
Esri has also adopted the same specification for their products.
You can find a list of parsers, renderers & CLI utilities here: https://github.com/mapbox/awesome-vector-tiles
In the common scenario, you can use mapbox-gl-js to render the vector tiles on the client. To generate vector tiles, you can use Mapbox Studio. This will require uploading your data online in the Studio. You can also use Mapbox Studio Classic (the older version) to generate the tiles locally.
Internally, Mapbox Studio uses the tilelive API, so you can programatically generate the tiles. In the list above there are other good alternatives as well.
I have a dicom from a GE MRI scanner and there are a few pieces of information in the header I require (namely the relative position of the scan). I tried using info = dicominfo(filename) but, for some reason, this piece of information does not show up. I know that this information is saved, however. It might be a private data, but I'm not completely sure. If anyone has any information on how to resolve this issue that would be greatly appreciated.
Try using the dicomread function instead, it should be more versatile than dicominfo and it reads the information files too. If this doesn't work then it means that the information you are trying to obtain is not made available by GE.
Or use gdcm to dump the private GE header:
$ gdcmdump --pdb input.dcm