Python ArcGIS MapImageLayer.create_dynamic_layer用法及代碼示例

本文簡要介紹 python 語言中 arcgis.mapping.MapImageLayer.create_dynamic_layer 的用法。

用法:

create_dynamic_layer(layer)

返回：

FeatureLayer 或無(如果未啟用)

create_dynamic_layer 方法創建一個動態層。動態圖層/表格表示由ArcGIS 服務器發布的Map服務或已注冊工作空間的單個圖層/表格。僅當Map圖像圖層支持動態圖層時才支持此資源，如Map圖像圖層屬性上的supportsDynamicLayers 所示。

Parameter

Description

layer

必需的字典。動態層/表源定義。 用法: { “id”: <layerOrTableId>, “source”: <layer source>, //required “definitionExpression”: “<definitionExpression>”, “drawingInfo”: { “renderer”: <renderer>, “transparency”: <transparency>, “scaleSymbols”: <true,false>, “showLabels”: <true,false>, “labelingInfo”: <labeling info> }, “layerTimeOptions”: //supported only for time enabled map layers { “useTime” : <true,false>, “timeDataCumulative” : <true,false>, “timeOffset” : <timeOffset>, “timeOffsetUnits” : “<esriTimeUnitsCenturies,esriTimeUnitsDays, esriTimeUnitsDecades,esriTimeUnitsHours, esriTimeUnitsMilliseconds,esriTimeUnitsMinutes, esriTimeUnitsMonths,esriTimeUnitsSeconds, esriTimeUnitsWeeks,esriTimeUnitsYears | esriTimeUnitsUnknown>” } }

例子：

# USAGE EXAMPLE

>>> from arcgis.mapping import MapImageLayer
>>> from arcgis.gis import GIS

# connect to your GIS and get the web map item
>>> gis = GIS(url, username, password)

>>> map_image_item = gis.content.get("2aaddab96684405880d27f5261125061")
>>> layer_to_add ={
                    "id": <layerId>,
                    "source": <layer source>
                    "definitionExpression": "<definitionExpression>",
                    "drawingInfo":
                    {
                      "renderer": <renderer>,
                      "transparency": <transparency>,
                      "scaleSymbols": <true>,
                      "showLabels": <true>,
                      "labelingInfo": <labeling info>
                    },
                    "layerTimeOptions":
                    {
                      "useTime" : <true,false>,
                      "timeDataCumulative" : <true>,
                      "timeOffset" : <timeOffset>,
                      "timeOffsetUnits" : "<esriTimeUnitsCenturies>"
                    }
                  }
>>> new_layer = map_image_item.create_dynamic_layer(layer= layer_to_add)
>>>type(new_layer)
<arcgis.features.FeatureLayer>