重なり合うポリゴンに対するAGOLのシンボル描画順

Question

どうやらAGOLでは、重なり合うポリゴンの個別シンボルの描画順は反映されず、OIDの順にのみ描画されるようです。例を添付しました。ウェブマップ内にホスト フィーチャ レイヤーを配置し、属性に基づいて個別シンボルを設定しています。AGOLの編集ツールを使って地図にフィーチャを追加し、最初にタイプ「A」、次にタイプ「B」を追加する一方、次のポリゴンのセットでは逆の順序で追加しました。フィーチャはシンボルではなく、OIDの順に描画されているようです。

重なり合うポリゴンの描画順をどうすればよいか、教えていただけませんか。残念ながら、話を複雑にせずに、どちらか一方を必ず先に描画するようユーザーに伝えることはできません。

注：高度なシンボル設定を使用しない限り、ArcMapでも同じ動作になります。

ありがとうございます

AdrianWelsh · Answer

Could you try messing with transparencies to hopefully avoid any visual data loss (and avoid confusion)?

RobertMueller_Jr1 · Answer

Adrian-

Thanks for responding. I believe you could be right with the fastest wins or something very similar drawing is based on OID ordering. I say this as there have been several occurrences where the drawing order is "correct" at a given scale and then 1 LOD up or down and the drawing order is wrong. Very frustrating. I don't see any way around this other than to more or less have the user "hack" the feature by always adding the larger feature first and then the interior overlapping second, and hoping the OID order takes precedence over the "fastest wins", which is as far as you can get from a "best practice".

Thanks

AdrianWelsh · Answer

Robert,

I wonder if the drawing order of polygons is similar to how AGOL handles popup messages ordering. In this thread, it is stated that

there is no way to control popup ordering. The order comes from how fast layers can return their popup information. The fastest wins

Could it be similar to the "fastest" polygon wins too?

Since this is a feature service, is it possible for you to publish this as a map service to see if the same behavior happens?