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Distance markers from centre of shape

  • April 27, 2023
  • 5 replies
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I'm creating a cruciform for biodiversity monitoring and I'm having trouble setting the distances from the centre. I need to do this for 50+ areas so it would be good to get some batch processing going.

The inner nodes start at 5m from the centre. From then onwards, they are set at 10m intervals. Each arm of the cruciform is 45m long. So there are five nodes on each arm resulting in a 90m total length on the x & y axis.

Node labels are as follows: 5m, 15m, 25m, 35m, 45m.

The problem is, the southern, eastern and western arms are showing the distances backwards i.e. 45m label starts at the inner node and the 5m label is at the outer node.

The workbench works as follows:

  • Calculate centre point of area
  • Create vertices around centre point so LineBuilder can create 4 x arms of cruciform( N,S,E,W)
  • Create points on lines using DistanceMarker
  • Label points based on Counter

 

The northern arm always seems to come out correct so it must be something to do with line/point orientation. I have tried flipping the line direction with the Orientor but this doesn't affect the start position of the Distance Marker. The issue seems to be around where the Distance Marker starts plotting the points along the line. I have a feeling I need the NeighbourhoodFinder but not sure where to begin. Any help would be appreciated!

Best answer by ctredinnick

I'm sure people would have lots of suggestions for this. If I was building that shape from scratch I would do in the way the workspace I've attached. Offset the points along one line, then rotate copies about the centre. All you need is the x/y coordinates for the centre of each area

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5 replies

ctredinnick
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  • Best Answer
  • April 28, 2023

I'm sure people would have lots of suggestions for this. If I was building that shape from scratch I would do in the way the workspace I've attached. Offset the points along one line, then rotate copies about the centre. All you need is the x/y coordinates for the centre of each area


I'm sure people would have lots of suggestions for this. If I was building that shape from scratch I would do in the way the workspace I've attached. Offset the points along one line, then rotate copies about the centre. All you need is the x/y coordinates for the centre of each area

Thanks @ctredinnick​ . Good idea cloning each arm. It looks like a tidy way to do it. I will give it a crack this morning.


I'm sure people would have lots of suggestions for this. If I was building that shape from scratch I would do in the way the workspace I've attached. Offset the points along one line, then rotate copies about the centre. All you need is the x/y coordinates for the centre of each area

@ctredinnick​ Would you mind attaching an image of the workspace with Summary Annotations enabled?


ctredinnick
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  • April 30, 2023

@ctredinnick​ Would you mind attaching an image of the workspace with Summary Annotations enabled?

image


@ctredinnick​ Would you mind attaching an image of the workspace with Summary Annotations enabled?

Legend thank you 👌