JavaScript 的 HERE 地图 API 中的道路标签图层

Road Label Layer in HERE Maps API for JavaScript

我正在尝试使用 HERE Maps API for JavaScript 将矢量图添加到网页。我一直在使用下面的样式代码来呈现类似于 the 4th picture from the top at this link(只有道路和水域图层的样式)的超极简样式。

sources:
    omv:
        type: OMV
        max_zoom: 17
        min_display_zoom: 1
# global description of the map, in this example
# the map background color is white
scene:
    background:
        color: [1.000, 1.000, 1.000, 1.00]

# section contains the style information for the layers
# that are present on the map
layers:
    # user defined name of the rendering layer
    water_areas:
        # the section defines where the rendering layer takes
        # its data from source: omv is mandatory for the Vector Tile API
        # layer: water specifies what vector layer is taken
        # for the rendering see REST API documentation for the
        # list of available layers.
        data: {source: omv, layer: water}
        # section defines how to render the layer
        draw:
            polygons:
                order: 1 # z-order of the layer
                color: [0.055, 0.604, 0.914, 1.00]
    road:
        data: {source: omv, layer: roads}
        draw:
            lines:
                order: 2
                color: [0.561, 0.561, 0.561, 1.00]
                width: 15

不难弄清楚如何添加 geoshape 叠加层和 UI 控件和平移等内容,但我未能成功添加的一件事是道路标签。 (这似乎很容易。)

我试图从其他文档示例中获取道路标签层的代码,但它总是会破坏地图(只在白色背景上留下我的地理形状)。这可能是因为始终有全局变量附加到标签的语言或填充颜色,但是当我尝试引入所有全局变量设置和引用时,地图仍然损坏。

所以我的问题是,有谁知道 simple/foolproof 将道路标签添加到具有这种最小样式的 HERE 地图的方法吗?我想我正在寻找使该层可见所需的最少属性。谢谢!

为了更好地修改(删除 section/add 你的)矢量样式以使用在线编辑器 Map Style editor(它允许你立即看到更改)然后在你的网站上加载修改后的样式 yaml 文件应用如:

function setStyle(map) {
        // get the vector provider from the base layer
        var provider = map.getBaseLayer().getProvider();
        // Create the style object from the YAML configuration.
        // First argument is the style path and the second is the base URL to use for
        // resolving relative URLs in the style like textures, fonts.
        // all referenced resources relative to the base path https://js.api.here.com/v3/3.1/styles/omv.
        var style = new H.map.Style('URL/to/your.yaml',
            'https://js.api.here.com/v3/3.1/styles/omv/');
        // set the style on the existing layer
        provider.setStyle(style);
    }

请参阅 https://jsfiddle.net/qw64zL85/ 上的示例 将此 yaml 示例文件与 road_labels 一起使用:there only yaml text