mapbox | 易学教程

MapBox: How to remove a shape and draw another shape?

阅读更多关于 MapBox: How to remove a shape and draw another shape?

问题 I created annotation for shape _path = [RMAnnotation annotationWithMapView:_mapView coordinate: _userLocation.coordinate andTitle:@"Path"]; [_mapView addAnnotation:_path]; in delegate I wrote - (RMMapLayer *)mapView:(RMMapView *)mapView layerForAnnotation:(RMAnnotation *)annotation { if ([annotation.title isEqualToString:@"Path"]) { _lineBetweenTwoBeacon = [[RMShape alloc] initWithView:mapView]; _lineBetweenTwoBeacon.lineColor = [UIColor redColor]; _lineBetweenTwoBeacon.lineWidth = 10.0f;

Mapbox Android SDK crash - “java.lang.Error: Vertex shader fill failed to compile”

阅读更多关于 Mapbox Android SDK crash - “java.lang.Error: Vertex shader fill failed to compile”

问题 After upgrading my Android Studio version to 2.1.3, my application crashes every time I launch it. More precisely, it crashes when trying to load my Mapbox View (that was perfectly working before that). I did some research, and it seems to be a known issue, but I couldn't find any workaround to pass through it... I think it MAY be a problem with the Emulator only, but for now I couldn't try on a lot of physical devices, so I'm not sure about that. But anyway, I really need to use the emulator

Do embedded GeoJSON styles work with Mapbox GL?

阅读更多关于 Do embedded GeoJSON styles work with Mapbox GL?

问题 Is it possible to utilize the built-in properties attribute of a GeoJSON data source to automatically style a Mapbox GL map without having to pre-specify a style? I have a use case where I dynamically load in GeoJSON LineString data that needs to be a particular color and it already has style data built in: {"properties": {"color": "#ffff33"... Right now, I have a rather inelegant setup where the relevant color is parsed out, translated into a style, and added to the map upon every load:

Xcode build error clang failed

阅读更多关于 Xcode build error clang failed

问题 Something's missing in my iPhone application. I do not success to fix this error, that seams to be a martian error for me... I do not understand at all, even after many searches... ProcessPCH /Users/xyz/Library/Developer/Xcode/DerivedData/IntraMuros-cqmesmesegqjxofftymiymllpzow/Build/Intermediates/PrecompiledHeaders/IntraMuros-Prefix-etlohrlrqzwcjicedfazzdvoaqbq/IntraMuros-Prefix.pch.pth IntraMuros/IntraMuros-Prefix.pch normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler cd "

Missing MapBox CSS using React

阅读更多关于 Missing MapBox CSS using React

问题 I'm trying to work with MapBox using React. I've created the project with create-react-app, added mapbox-gl ("mapbox-gl": "^0.46.0-beta.1"), but I have a problem with css file. It shows me this warning: This page appears to be missing CSS declarations for Mapbox GL JS, which may cause the map to display incorrectly. Please ensure your page includes mapbox-gl.css, as described in https://www.mapbox.com/mapbox-gl-js/api/ I've followed all steps: 1 - Install the npm package: npm install --save

Open a Mapbox map in QGis

阅读更多关于 Open a Mapbox map in QGis

问题 I'm looking for a way to display one of my Mapbox map in QGis (baselayer edited on mapbox.com & data uploaded from tilemill). Did someone here already find a way ? Is there a feature or a plugin to do that ? Thanks for your future answers ! Adrien 回答1: Yesterday, I found two solutions by myself : 1) the pretty official "TileLayer Plugin" QGis plugin You'll have to write a TSV file (Tab Separated Values) with, at least, the name, the credits and the URL of your Mapbox map. The URL should look

How to convert a map location (lat, lng) pair to a screen position (x, y) pair in mapbox

阅读更多关于 How to convert a map location (lat, lng) pair to a screen position (x, y) pair in mapbox

问题 I am using mapbox javascript API to do some cool stuff on a map. Now I have a map location (latitude, longitude) pair and I want to set the view to this location then use javascript to simulate a click at this location. The problem is that I need to find out the screen position (x, y) pair of this location after setting the view. But how do I do that? It seems there is an API L.ICRS. I tried but it returned NaN for both x and y -- please check my example javascript codes below. var latlng =

setBounds to two different featureGroups at once mapbox leaflet?

阅读更多关于 setBounds to two different featureGroups at once mapbox leaflet?

I am working on a map where I have two feature layers. var myFeatureGroup1 = L.featureGroup().addTo(map); var myFeatureGroup2 = L.featureGroup().addTo(map); I am setting bounds like: map.fitBounds(myFeatureGroup1.getBounds()); map.fitBounds(myFeatureGroup2.getBounds()); But for obvious reasons, myFeatureGroup2 is set bounds on. Is ther a way by which I can fit bounds to multiple layerGroups? Like both of them at once? Is there a way I can merge them into a third layerGroup and fit bounds on it? map.fitBounds(myFeatureGroup1.getBounds().extend(myFeatureGroup2.getBounds())); See the LatLngBounds

leaflet.js: too slow with custom svg markers (and a lot of points)

阅读更多关于 leaflet.js: too slow with custom svg markers (and a lot of points)

问题 I am trying to use some user defined svg icons for markers on leaflet but I think the whole task gets too heavy for my browser. Until now I was using L.circleMarker but I now have to use markers like asterisks, arrows, stars etc instead so I decided to do them as svg path and then plug them in instead of my circleMarkers. To make things more complicated I have more than 300K points. With the circleMarkers I was able to make a workable chart, not lightning fast but quite acceptable especially

JupyterLab安装地图插件

阅读更多关于 JupyterLab安装地图插件

JupyterLab安装地图插件（本文所述软件还在发展之中，欢迎加入开源项目，提供建议、测试和开发。）在 Jupyter 中进行数据分析时，往往需要将数据叠加到地图上。简单的地图需求可以利用matplotlib/echarts/bokeh的地图显示功能，更为复杂的可以使用SuperMap/Leaflet/GMaps提供的地图插件，实现交互的地图操作，可以显示和操作大比例尺的专业级地图，甚至调用专业GIS服务进行空间分析，当然这操作起来也会更复杂一些。上图来自于Kubernetes和JupyterLab支持， https://github.com/openthings/iclient-python 1、iClientPy iClientPy是由超图软件公司（http://www.supermap.com）开发的一个开源项目，可以将SuperMap iServer和Online服务通过python API访问，并支持Jupyter的编程和集成化分析。目前该项目还在开发之中，尚未形成发布版本（预计2018年底发布）。项目地址如下：文档， http://iclientpy.supermap.io/geticlientpy.html 源码， https://github.com/SuperMap/iclient-python 由于conda安装国内访问较慢，可以加入镜像站