街灯データのギャップを見つける

Question

街灯データのギャップを見つける必要がある問題を解決しようとしています。街灯は、すべてのポールのうち1本おき、交差点、および行き止まり／袋小路に設置する必要があります。ライトの有無にかかわらずすべてのポールのデータセット、ライト付きポールのデータセット、そして道路中心線と交差点のデータセットがあります。バッファツールを使用して、50フィート以内に街灯がないすべての交差点を見つけることができました。 <\/P> 1本おきのポールに街灯を設置する問題はどのように解決すればよいでしょうか？これは、道路の向こう側にポールや街灯がある場合も含みます。 <\/P>

RobertKrisher · Answer

Switch the order of input/near parameters in your GP tool. You want the poles to each find their nearest road (then use the near_x and near_y), doing it the other way around means that each road will only find its nearest pole 🙂 Specifying a reasonable threshold is always a good idea.

One of the biggest limitations of this approach is going to be how streetlights are captured in intersections (which street do they get assigned to?), but this approach will work well for long running stretches of road.

BenWilkerson89 · Answer

Thank you Robert for the suggestion! I did as you suggested but it didn't generate a point on the centerline for every pole as I thought it would. It only generated them at random intervals. As I hope you can see from the attached images, there are more poles that adjacent to the centerlines but it's not grabbing those. Do I need to set a search radius?

Snag_1baf02b8.png

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Brochure_Acueducto_Reduccion perdida agua_SPX_ESP.pdf

CNMOC Change Management Plan DRAFT.docx

NebraskaCounties-PopulationDensityAndTowns.pdf

RobertKrisher · Answer

You could use the generate near table tool to identify the street centerline closest to each pole, and by turning on the Location option it will include the location on the centerline. You can then create a point layer from the coordinates in your near table (remembering the ID of the line), and join in the information from your pole layer whether it has a streetlight or not. That should make it much easier to visually review the centerline data.