ArcGIS Onlineで時間の経過に合わせてシンボルを変更する

LindsayRaabe

次のような動作をするポイントレイヤーの設定方法について、どなたか教えていただけませんか？

ポイントは最初に一度だけ作成し、時間対応を有効にします。フィーチャのステータスが「入居中」から「空室」、そして再び「入居中」へと変わるにつれて、シンボルもそれに合わせて変化させたいです。まだ使い始めたばかりで、色を変えるトリガーとして編集日を使ってみましたが、スライダーが最新の編集日時に達するまでポイントが表示されず、それ以前の表示もすべて隠れてしまいます。

CBD内の建物の入居状況と、その時間の経過に伴う変化を示そうとしています。

よろしくお願いします！

KellyGerrow

Hi Lindsay,

Modifying the value that your symbology is based off of will result in the symbology changing. If it isn't changing, please share your map so we can take a look as to why the symbology isn't updating.

How many features are in your layer?

If there are less than two thousand, then all of the data is requested in the initial request to the service to improve performance. The application doesn't make a new request for updated data unless the map is refreshed, so its possible if you have only a few features that your aren't seeing the updates due as there is no request for more information.

To confirm this, try making an edit and then refreshing your web map.  Does the symbology change? If it does, the above issue is probably what is causing the issue.

To work around this, you can set a refresh interval on the layer: Set refresh interval—ArcGIS Online Help | ArcGIS 

this ensures that new data is retrieved from the server depending on the setting. This is really helpful if you are frequently updating the data. If you are updating the data every once in a while, you may be fine to leave the map as is as each time someone navigates to the map, the new data symbology should be shown.

If there are more than 2000 features, the application makes a new request to the server for data each time a user pans and zooms, showing a refresh in the data.

Let me know if this is the issue.

-Kelly