openstreetmap

问题 I'm trying to load a tile source, but for some reason it doenst work. Here's my code: final IRegisterReceiver registerReceiver = new SimpleRegisterReceiver(this); // Create a custom tile source final ITileSource tileSource = TileSourceFactory.MAPNIK; // Create a file cache modular provider final TileWriter tileWriter = new TileWriter(); final MapTileFilesystemProvider fileSystemProvider = new MapTileFilesystemProvider(registerReceiver, tileSource); File myMapTileSource = new File

问题 I need an editor (preferably Linux) which can load OSM maps and allows me to draw (hiking) tracks on it which I want to export as GPX. But I do not want to draw them free-hand but instead would like to have the editor automatically snap my drawn track to the nearest OSM track. The idea is to export arbitrary tracks which follow existing OSM tracks. Does anyone know an application that is capable of this? Thanks. 回答1: If you still haven't found a suitable tool, then try QLandkarteGT. It

问题 New to the Atlas project (and also to Java), I am trying some things out. I am looking for the preferred way to combine the instructions given here and here to apply tag filtering on an Atlas. Would the below be a good approach or is there a better alternative? String definition = "highway->residential"; final TaggableFilter filter = TaggableFilter.forDefinition(definition); final Optional<Atlas> predicateAtlas = atlas.subAtlas(filter::test, AtlasCutType.SOFT_CUT); 回答1: Your code would work

问题 I have this very basic requirement for providing offline maps in my web application. My web-application cannot access internet and hence all online API's for showing map is ruled out completely. After doing research,I downloaded the .osm.pbf format file for the desired location(Say a particular city). I converted .osm.pbf to .osm file Next step I generated tiles using this .osm file. The tiles are stored on my local directory. My final Step is to show these tiles as a map in web-browser

问题 I added legend to r leaflet code and output is this I would like the order to be GREEN "More than 66%" ORANGE "Between 33% and 66%" RED "Less than 33%" Code sep <- read.csv("31R_SEP_assets_csv - Copy.csv") Sub1 <- sep[grep("SEP.12", names(sep))] sep$newCol <- 100*rowSums(Sub1)/rowSums(sep[4:7]) # create a new grouping variable Percent_SEP12_Assets <- ifelse(sep[,8] <= 33, "Less than 33%", ifelse(sep[,8] >= 66, "More than 66%", "Between 33% and 66%")) Color_Assets <- colorFactor(c("darkgreen",

问题 I'm trying to plot the graph of edge centrality on the folium using the following code graph_map = ox.plot_graph_folium(G, popup_attribute='name', tiles='stamenterrain', edge_color=ec, edge_width=2) where ec is list of edge colors but it is not showing up. Does edge_color accept a list of colors ? Any ideas? I really appreciate if you can help me. https://github.com/gboeing/osmnx-examples/blob/master/notebooks/08-example-line-graph.ipynb 回答1: I tried adding a new column of edge color to gdf

问题 I'm trying to plot the graph of edge centrality on the folium using the following code graph_map = ox.plot_graph_folium(G, popup_attribute='name', tiles='stamenterrain', edge_color=ec, edge_width=2) where ec is list of edge colors but it is not showing up. Does edge_color accept a list of colors ? Any ideas? I really appreciate if you can help me. https://github.com/gboeing/osmnx-examples/blob/master/notebooks/08-example-line-graph.ipynb 回答1: I tried adding a new column of edge color to gdf

问题 I'm trying to plot the graph of edge centrality on the folium using the following code graph_map = ox.plot_graph_folium(G, popup_attribute='name', tiles='stamenterrain', edge_color=ec, edge_width=2) where ec is list of edge colors but it is not showing up. Does edge_color accept a list of colors ? Any ideas? I really appreciate if you can help me. https://github.com/gboeing/osmnx-examples/blob/master/notebooks/08-example-line-graph.ipynb 回答1: I tried adding a new column of edge color to gdf

问题 I'm trying to calculate elevation data for hiking routes, using open data (avoiding licensing constraints like Google). I was able to read a public DEM of my country (with a 10-metres resolution) using readGDAL (from package RGDAL), and proj4string(mygrid) gives me: "+proj=utm +zone=32 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0" The beginning of the .asc file is: ncols 9000 nrows 8884 xllcorner 323256,181155 yllcorner 4879269,74709 cellsize 10 NODATA_value -9999 978 998 1005

问题 I'm trying to calculate elevation data for hiking routes, using open data (avoiding licensing constraints like Google). I was able to read a public DEM of my country (with a 10-metres resolution) using readGDAL (from package RGDAL), and proj4string(mygrid) gives me: "+proj=utm +zone=32 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0" The beginning of the .asc file is: ncols 9000 nrows 8884 xllcorner 323256,181155 yllcorner 4879269,74709 cellsize 10 NODATA_value -9999 978 998 1005