ESRI Js API 4.15：FeatureLayer 标签在所有要素上都不可见

Question

我试图在一个点 FeatureLayer 上显示标签，标签仅对一个特征不可见，但是当地图改变比例时它变得可见，有什么解释吗？

这是我的代码：

 "renderer": {
                    "type": "class-breaks",
                    "field": "nums",
                    "classBreakInfos": [
                        {
                            "minValue": 0,
                            "maxValue": 9,
                            "label": " < 10",
                            "symbol": {
                                "type": "picture-marker",
                                "url": "./assets/picto/nums/vert.png",
                                "width": 30,
                                "height": 50
                            }
                        },
                        {
                            "minValue": 10,
                            "maxValue": 19,
                            "label": " 10 à 19",
                            "symbol": {
                                "type": "picture-marker",
                                "url": "./assets/picto/nums/orange.png",
                                "width": 30,
                                "height": 50
                            }
                        },
                        {
                            "minValue": 20,
                            "maxValue": 1000000,
                            "label": " > 19",
                            "symbol": {
                                "type": "picture-marker",
                                "url": "./assets/picto/nums/rouge.png",
                                "width": 30,
                                "height": 50
                            }
                        }
                    ]
                },
"labelingInfo": [
                    {
                        "labelExpressionInfo": {
                            "expression": "$feature.nums"
                        },
                        "labelPlacement": "center-center",
                        "symbol": {
                            "type": "text",
                            "color": "black",
                            "haloColor": "white",
                            "xoffset": -2,
                            "yoffset": 13,
                            "font": {
                                "size": 7,
                                "family": "sans-serif",
                                "weight": "bolder"
                            }
                        }
                    }
                ]

我加入了FeatureLayer标签问题的图片：

Answer 1

根据您的定义，您正在使用默认的冲突消除策略（“静态”）。有时，当发生重叠时，重叠的标签不会显示。取决于这种策略是否有意义的情况。

您可以尝试使用“none”选项来关闭消除冲突，您应该不会遇到这个问题。看来这可能就是你要找的。

labelClass.deconflictionStrategy = "none";

ArcGIS JS API - LabelClass deconflictionStrategy

ESRI Js API 4.15：FeatureLayer 标签在所有要素上都不可见

ESRI Js API 4.15 : FeatureLayer labels are not visible on all features

label

layer

arcgis-js-api