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Multiple hatches with the same value on a line

ArnoldKuilman

After calibrating a route, I have some of the hatches showing multiple times. When zoomed in they show real close together as illustrated in the image below. Does anyone have seen this before, and know what the solution is to remove those multiple hatches, and make sure of a correct calibration?

Thanks in advance!

GIS for Hydrographic Surveying‌

multiple hatches.png

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Accepted answers

RiyasDeen

That explains your second image, Difference in measure between your calibration points is 0.00102 because of your tolerance (0.001) value there is no change in measure between these two calibration point. That's why you are getting measure between these points as 0.000

Try creating a new feature class with tolerance 0.00001 and resolution 0.000001. You should get different measure at your hatches.

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ArnoldKuilman

There are no points with the same measure on individual lines. But the amount of duplicate hatches varies if I reduce the amount of points for calibrating the line. Sometimes the number of duplicate hatches increase, other times they decrease. Really looks like a bug in ArcMap to me. Some trial and error might give a temporary solution.

Maybe some people at Esri Technical Support can have a look at this?‌

GeorgeNewbury

Start an edit session and look at the M values for the vertices along that line in that area.

RiyasDeen

Hi Arnold,

Setting looks good to me, probably its your calibration points. Most likely you are having a cluster of points with same measure.

ArnoldKuilman

These are the settings I used, if you recommend other settings, then please let me know:

Settings-Calibrate Routes.png

The files I use have a lot of calibration points close together, the lines are build up from the same points that I use for calibration. I will investigate if reducing the amount of calibration points will solve this problem.

RiyasDeen

Hi Arnold,

1) By any chance did you calibrate the route multiple times with extrapolate set to false? You may want to try calibrating the route again with extrapolate before and after set to true.

2) Double check to make sure that you don't have multiple calibration point in close proximity.

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