Forum

Author Topic: Add Vertex to polyon without altering existing boundaries  (Read 1257 times)

DayGeckoArt

  • Jr. Member
  • **
  • Posts: 84
    • View Profile
Add Vertex to polyon without altering existing boundaries
« on: November 02, 2024, 06:58:59 AM »
I export my orthomosaics and open them in ArcGIS Pro so I can upload them to ArcGIS Online. The tile format in AGOL uses JPEG compression for rectangular areas, but if there's any transparency it has to be PNG. That means an edge that isn't vertical/horizontal creates a lot of PNG tiles.

Because of this, I usually use the rectangle tool to draw my boundary. But I often have to trim a corner or two from my orthomosaic. The problem is when you add a vertex, the vertex goes where your cursor is. No matter what, it won't be exactly aligned with the line, so the existing line becomes angled slightly. The pictures below show an exaggerated example.

I am requesting that the Add Vertex tool NOT add the vertex where the cursor, but instead adds it to the location along the edge that is closest to the cursor, so that the original boundaries are maintained perfectly.  This is what happens in ArcMap and ArcGIS Pro when you add a vertex so it would be consistent with GIS software.

Thanks!




JMR

  • Hero Member
  • *****
  • Posts: 521
    • View Profile
Re: Add Vertex to polyon without altering existing boundaries
« Reply #1 on: November 07, 2024, 01:26:53 AM »
Hello DayGeckoArt:
I sincerely do not want Agisoft to change the way the vertex addition works now. I understand your wish but there are many good reasons to keep it as is because it makes a lot faster and easier to densify a shape.
But there is a workaround to solve your problem.
1. draw your rectangle.

2. set snap mode to edge and draw a polyline with the shape you want to divert snapping on the edges that you want to keep

3. select again your rectangle and add as many vertices as required to copy the shape of the polyline. Don't care if they distort your rectangle.

4. set snap mode to vertex and drag your new vertices to the desired location snapping to the auxiliary polyline.


I hope the solution is good enough for you.
Regards,

José Martínez
Accupixel



DayGeckoArt

  • Jr. Member
  • **
  • Posts: 84
    • View Profile
Re: Add Vertex to polyon without altering existing boundaries
« Reply #2 on: November 12, 2024, 01:40:13 AM »
Thanks JMR, I was trying to find a workaround by clipping or something, but didn't think of that!

I guess if people find the existing method useful, there could be an additional "add vertex along edge" and the existing tool can be left alone