javascript - D3: Click on map and trace the closest path until the coast -

-

for application build, user can click on point of map, , nearest river path identified , animated until reaches coast. used d3 draw bunch of paths (rivers) geojson file, each path feature geometry type linestring. figured use d3's voronoi identify closest path when user clicks on point. biggest problem is, identify closest river segment, not sure how automatically trace rest of paths until reaches coast. example, can see in image attached, 1 path highlighted, paths after highlighted. idea create new geojson file possible stream paths (as whole, not individual segments), how create file file each individual segment path? provided 3 features geojson file @ end give idea of how current data organized

enter image description here

{"type": "featurecollection","crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:ogc:1.3:crs84" } },"features": [{ "type": "feature", "properties": { "arcid": 15, "grid_code": 1, "from_node": 4074, "to_node": 4069, "shape_leng": 24.8000011779 }, "geometry": { "type": "linestring", "coordinates": [ [ 128.257362464927638, 26.8747231358752 ], [ 128.257361002021611, 26.874947030137374 ] ] } },{ "type": "feature", "properties": { "arcid": 16, "grid_code": 1, "from_node": 4075, "to_node": 4070, "shape_leng": 24.8000011779 }, "geometry":{ "type": "linestring", "coordinates": [ [ 128.258485955739388, 26.874729034949482 ], [ 128.258484495046019, 26.87495292926857 ] ] } },{ "type": "feature", "properties": { "arcid": 23, "grid_code": 1, "from_node": 4083, "to_node": 4068, "shape_leng": 69.318110594900006 }, "geometry": { "type": "linestring", "coordinates": [ [ 128.256990163500433, 26.874385326154584 ], [ 128.256674423121041, 26.874943420716903 ] ] } }]}


Comments

Post a Comment

Popular posts from this blog

mysql - Dreamhost PyCharm Django Python 3 Launching a Site -

-
i'm new python/django , created simple django website using pycharm. site works fine running on computer, i'm lost when comes taking site onto host (dreamhost). i'm able upload files correct directories fine, , believe made correct changes database on mysql. i'm not sure go there though. right now, page shows files rather site. direction appreciated. much! you should not run django application using python manage.py runserver on production. how run application on django depends on server (apache, nginx) want use for apache - https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/modwsgi/ for nginx - https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-uwsgi-and-nginx-on-ubuntu-14-04 the mysql database should, of course, exist , have correct credentials. or, if choose use sqlite, file should accessible, readable , writable www-user (may different depending on linux distributive)
Read more

java - Sending SMS with SMSLib and Web Services -

-
i have made rest web service send smss using hsdpa usb modem. using smslib in java send smss. every time web service invoked, create gateway start service, send message, stop service , remove gateway. takes 20 seconds each message. found starting service takes lot of time. part of code use send smss service.getinstance().addgateway(gateway); service.getinstance().startservice(); outboundmessage msg = new outboundmessage(phonenumber, message); if (service.getinstance().sendmessage(msg)) { result = "message sent successfully!!"; } else { result = "could not send message."; } service.getinstance().stopservice(); service.getinstance().removegateway(gateway);//remove gateway is there way can start service once if not started , use send message when ever web service invoked? why dont group messages , send in 1 go? service.getinstance().sendmessages(messa...
Read more

java - How to resolve The method toString() in the type Object is not applicable for the arguments (InputStream) -

-
i'm trying read json file local machine. @path("/") public class jsonparsing { file f = new file("file.json"); if (f.exists()){ inputstream = new fileinputstream("file.json"); string jsontxt = ioutils.tostring(is); system.out.println(jsontxt); jsonobject json = new jsonobject(jsontxt); string = json.getstring("1000"); system.out.println(a); } } but i'm getting error in tostring() method. possible read .txt file containing json object local machine? if possible, how done? firstly: whenever ask question- add imports well. secondly: yes possible read .txt file containing json object. steps: 1. add maven dependency in pom.xml - <dependency> <groupid>com.googlecode.json-simple</groupid> <artifactid>json-simple</artifactid> <version>1.1.1</version> </dependency> or add jar of dependency. 2.import...
Read more