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Strange Buffer Results - Looks like Pac-Man

Drew

Hello,
I am having strange results with specific buffers under 106 meters only.
See attached image.

[ATTACH=CONFIG]26360[/ATTACH]

Below are my buffer parameters..

bufferSR 102100
distances 100
f json
geodesic true
geometries {"geometries":[{"rings":[[[-8874155.9794,5583095.049000002],[-8874094.4103,5583035.197099999],[-8874113.6844,5583015.176399998],[-8874175.2541,5583075.027900003],[-8874155.9794,5583095.049000002]]]}],"geometryType":"esriGeometryPolygon"}
inSR 102100
outSR 102100
unionResults false
unit 9001

As mentioned: It only happens if the buffer is less than 106m...

Drew

buffer.png

sophered_0-1721760798603.png

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Accepted answers

All comments

RobertScheitlin__GISP

Drew,

What version of ArcGIS Server are you on? I just tested your inputs with 10.11 and did not get that issue.

Drew

Drew,

What version of ArcGIS Server are you on? I just tested your inputs with 10.11 and did not get that issue.

Rob,
I am using 10.11.
here is my returned geometry..

{
    "geometries": [{
        "rings": [
            [
                [-8874094.4103087876, 5583035.1970917983],
                [-8874113.684388062, 5583015.1764232805],
                [-8874175.2540852278, 5583075.0278742984],
                [-8874155.979449356, 5583095.0489886198],
                [-8874094.4103087876, 5583035.1970917983]
            ],
            [
                [-8873979.2474012524, 5583116.1079121269],
                [-8873972.6577326767, 5583105.7287005391],
                [-8873966.9946875442, 5583094.8127487144],
                [-8873962.301346492, 5583083.4431422055],
                [-8873958.6134430841, 5583071.7062581843],
                [-8873955.9591411445, 5583059.6916086953],
                [-8873954.3584781829, 5583047.4905864354],
                [-8873953.8235880286, 5583035.1959944777],
                [-8873954.3588121422, 5583022.9014192065],
                [-8873955.959809063, 5583010.7004464865],
                [-8873958.6145562734, 5582998.6860346738],
                [-8873962.3027936425, 5582986.9494172232],
                [-8873966.9963573385, 5582975.5799460914],
                [-8873972.6596251074, 5582964.6643078532],
                [-8873979.2495163251, 5582954.2854265394],
                [-8873986.7157145739, 5582944.5224636635],
                [-8873995.0015582331, 5582935.4494074332],
                [-8874004.0440404676, 5582927.1356999679],
                [-8874013.7741432022, 5582919.6441993844],
                [-8874024.1179502849, 5582913.0322772739],
                [-8874034.9966475219, 5582907.3499376858],
                [-8874046.3275245316, 5582902.6407576855],
                [-8874058.0243087113, 5582898.9401631542],
                [-8874069.9980557784, 5582896.2766828341],
                [-8874082.1575950775, 5582894.6705376487],
                [-8874094.4103087876, 5582894.1337974099],
                [-8874106.6630225033, 5582894.6705376487],
                [-8874118.8225618023, 5582896.2766828341],
                [-8874130.7963088695, 5582898.9401631542],
                [-8874142.4930930417, 5582902.6407576855],
                [-8874153.8239700515, 5582907.3499376858],
                [-8874164.7026672885, 5582913.0322772739],
                [-8874175.0464743786, 5582919.6441993844],
                [-8874184.7765771057, 5582927.1356999679],
                [-8874192.2325339615, 5582933.8827585531],
                [-8874253.8015632071, 5582993.7332021948],
                [-8874074.4655295797, 5582996.7147772368],
                [-8874076.4260884542, 5583115.4841558225],
                [-8874214.8002230134, 5583113.1828888897],
                [-8874195.526143739, 5583133.2040875405],
                [-8874190.2834409997, 5583138.3725446584],
                [-8874184.7786921784, 5583143.2589888796],
                [-8874175.0484781265, 5583150.750674394],
                [-8874164.7045597266, 5583157.3630835237],
                [-8874153.8256398458, 5583163.045579941],
                [-8874142.4944288805, 5583167.7552088434],
                [-8874130.7973107472, 5583171.4559131982],
                [-8874118.8233410362, 5583174.1194744222],
                [-8874106.663467776, 5583175.7258259123],
                [-8874094.4103087876, 5583176.2625828357],
                [-8874082.1571497973, 5583175.7258259123],
                [-8874069.9972765427, 5583174.1194744222],
                [-8874058.0231955145, 5583171.4559131982],
                [-8874046.3260773811, 5583167.7552088434],
                [-8874034.9949777275, 5583163.045579941],
                [-8874024.1160578541, 5583157.3630835237],
                [-8874013.7720281277, 5583150.750674394],
                [-8874004.0418140776, 5583143.2589888796],
                [-8873995.5468010977, 5583135.4479845138],
                [-8873991.5130280331, 5583131.319176889],
                [-8873986.7135995012, 5583125.8713734569],
                [-8873979.2474012524, 5583116.1079121269]
            ]
        ]
    }]
}
[/code

Sample using ESRI Service.. Should there be 2 rings?

CLICK HERE TO SEE SAMPLE

RobertScheitlin__GISP

Andrew,

I missed the geodesic part... I do get the same results. The question is do you need geodesic when the buffer is 100 meters?...

Drew

Andrew,

I missed the geodesic part... I do get the same results. The question is do you need geodesic when the buffer is 100 meters?...

Rob,
I allow the user to change the buffer distance through a textbox.
I might just wrap some code around and see if the distance is < 106 m and deal with it from there.

Thanks for taking the time to look at it.

Drew

DasaPaddock

This appears to be fixed in ArcGIS Server 10.2.

Drew

This appears to be fixed in ArcGIS Server 10.2.

Thanks, I hope to have 10.2 installed in the next 3 weeks. I will give it a test.

RobertScheitlin__GISP

Drew,

I can confirm that I see this fixed in 10.2.

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