Challenge #77: Extending Spatial Lines

[JoeM]

Happy Monday! Last week's solution can be found HERE!

In this week's challenge, a communications company is doing an analysis of fiber runs in the network. The current wiring needs to be extended a certain distance in each direction in a straight line. Take the provided lines and extend them 5 miles on each end. For more intermediate users, create a macro so the user can input the desired extension length for each run.

The output should include:
1. Name of the fiber
2. The original spatial line object
3. The new spatial line object
4. New length of line

[gnans19]

Here's my solution. Attached both workflow and macro

Spoiler

[alex]

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I went with finding the slope of the original line and extending it out.  I also decided to use the spatial tools vs. using the spatial formulas.

Good opportunity to practice with spatial tools that I rarely use.

[NicoleJohnson]

My solution! I started by going down a trigonometry black hole... that didn't work. (Yet.) So I ended up borrowing a few ideas from @gnans19 and @alex, and then focused on streamlining it once I got it working.

I'm convinced there's a trig way to do it though. Stay tuned. :)

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[Joe_Mako]

Here is a route to get slightly more accurate coordinates, I am sure the expressions could be improved to be even more accurate.

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I used https://stackoverflow.com/questions/2637023/how-to-calculate-the-latlng-of-a-point-a-certain-distanc... for my expressions to get the new points, and the average Earth radius in miles from https://en.wikipedia.org/wiki/Earth_radius#Mean_radius

[andre347]

Similar approach as one of the workflows above. Good challenge to play with the Spatial tools!

[Laurap1228]

My answer doesn't match exactly, I think it's cause my solution is missing the Smooth tool.

[EstherB47]

I started down a trig path too, and will get there (just struggling to remember trig!!).

When that wasn't working, found the same solution as many others, with circles and distances. I suppose that's more of a geometric/geospatial approach.

Still working on doing this with formulas.... to be continued.....

[LordNeilLord]

Like others I decided to try and figure this out using Trig &  Geometery and then I realised than I have no idea what I'm doing, so I stuck to what I know..

Spoiler

[patrick_digan]

I had a hard time with this one.