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# Weekly Challenge

Solve the challenge, share your solution and summit the ranks of our Community!

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## Challenge #84: Map Hurricane Harvey's Storm Evolution

9 - Comet

Solution attached. Took a while to get it perfect.

Spoiler

Seemed counter-intuitive to duplicate the rows where the segment changes but that way it allows you to have start and end points at the same location.

Thanks!

Luke - Keyrus UK

15 - Aurora

My stab at this.

Spoiler
To "connect the lines" and ensure that the average intensity is calculated for each segment including the end points that connect, I decided to generate a new row for each individual segment. It would take on one higher sequence number than the original highest sequence number per segment, and then copy in the first intensity and spatial object from the first sequence of the next segment.

14 - Magnetar

My solution for Harvey.

Spoiler
Thought I had it done in simple 3-4 tool workflow until I realized there were gaps between the segments... so I created new points for each segment that corresponded to the start point of the next segment.

7 - Meteor

16 - Nebula
Spoiler
Most of the tools are there to get the line segments fixed to match the solution which corrects for gaps.
9 - Comet

This was an interesting challenge, had to iterate on this one.

Spoiler
At first, it looked straightforward to me, but my lines had gaps between them. This happened because I treated each segments as completely separate line. Segment 4 had no line at all, as it consisted of one point only.

This made me think that I need to connect each segment with the previous one. The end point of one segment should be exactly the same as the beginning of the next segment. I duplicated first rows for all the segments (except the first one), adjusted segment and sequence number and then run all the rows through my original workflow.

15 - Aurora

Most of it was pretty straight forward except for getting the continuous line, I had the logic in my head but trying to implement it caused a few re-works of the workflow

Spoiler
17 - Castor

like @nick_ceneviva@David-Carnes & @lminors (and most of the other folk) I took a few more steps to make sure the lines all touched by backing a copy of the last point of segment 2 back into segment 1

@ChristineB 's solution does the same, but WAY more elegantly than me 🙂

Spoiler

11 - Bolide

Not sure I entirely agree that the solution provided satisfies the instructions given (adding that extra point to the segment). Fun nevertheless...

8 - Asteroid

Solution attached.