13er LiDAR Elevations + Checklists

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Chicago Transplant
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Re: 13er LiDAR Elevations + Checklists

Post by Chicago Transplant »

Scott P wrote: Mon Nov 20, 2023 11:00 am
Chicago Transplant wrote: Mon Nov 20, 2023 10:51 am Seems to be a mixed bag as to what has been corrected on the maps here. Looking at the ones in my post above Whitney and the one near Pyramid are located correctly but Flora and the one near San Luis are not. Not sure how many other map errors were or were not picked up so I definitely recommend tagging anything you think might be higher and not just relying on maps when it's that close.
I don't think I could call Flora an error. The spot elevation isn't on the highest point, but the map never says that it is and still indicates by contour lines that the north summit may be higher.

It's pretty common for maps to show a spot elevation on a point that isn't the highest in the vicinity. It doesn't mean the spot elevation wasn't surveyed correctly. Here's another random example where the spot elevation isn't as high as the highest point in the vicinity.
You are correct that in the Flora and Perkins examples the same number of closed contours are shown, and the spot elevation is just not on the high point. I guess it depends on the intent of the surveyors, did they intend to have the spot elevation be the highest point, or were they using a point that was more visible from where they surveyed and hence why they missed the actual high points? In either case, the spot elevation is not the summit so it makes sense to explore the other closed contours as a climber if you want to make sure you got the true summit.

There are other examples where a closed contour is clearly missed, or in the case of a saddle incorrectly closed to imply a higher saddle i.e. North Maroon. Those are clearly map errors.
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Re: 13er LiDAR Elevations + Checklists

Post by Scott P »

Chicago Transplant wrote: Mon Nov 20, 2023 11:28 am I guess it depends on the intent of the surveyors, did they intend to have the spot elevation be the highest point, or were they using a point that was more visible from where they surveyed and hence why they missed the actual high points?
The latter. It's pretty common, depending on where the benchmarks are.

I'm sure you already know this, but points marked with a triangle with a dot are benchmarks and the survey points, x's such as on the south summit of Flora were shot points (not always the highest one, but the one most visible from the benchmark), and ones that are simply close contours, but still have a spot elevation (such as 7491 on Perkins) are simply done after the fact by telemetry. Some maps show these with a "T" as well.
There are other examples where a closed contour is clearly missed, or in the case of a saddle incorrectly closed to imply a higher saddle i.e. North Maroon. Those are clearly map errors.
Yes, many errors. Sopris is another example similar to North Maroon. I know of some 200'+ vertical or overhanging cliffs that don't show up on the maps at all.
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Re: 13er LiDAR Elevations + Checklists

Post by mtngoatwithstyle »

Thank you so much, Bill, for all you do to keep it on track with all the changes. I can imagine your computers spitting smoke with so many changes :)
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Re: 13er LiDAR Elevations + Checklists

Post by bdloftin77 »

Ditto! Thanks for all your work, Bill!
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Re: 13er LiDAR Elevations + Checklists

Post by BillMiddlebrook »

Thanks!
I'm still fishing down in FLA so it will be another couple of weeks before I get back to the LiDAR 13er changes. Sorry it's taking so long.

I have to finish coding how the checklists will display those who finished the ranked 13ers prior to the LiDAR changes, then I can flip the switch.
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Re: 13er LiDAR Elevations + Checklists

Post by Phill the Thrill »

Jealous!
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Re: 13er LiDAR Elevations + Checklists

Post by BillMiddlebrook »

Phill the Thrill wrote: Wed Nov 29, 2023 11:05 am Jealous!
:)
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Re: 13er LiDAR Elevations + Checklists

Post by BillMiddlebrook »

I activated the 13er LiDAR elevations. Thank you again to John Kirk and company for all of the time-consuming work involved to get these elevations? Peak pages will show the LiDAR elevation as well as the previously used elevation. For member checklists, climbers who already completed the list of 584 ranked 13ers, they will still show as finishers.

If you see anything that seems off, please post in this thread.

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Re: 13er LiDAR Elevations + Checklists

Post by HikerGuy »

My old total was 357 and it now shows 355. It should be 356. I have not found the issue yet, but will let you know when I do.

EDIT: I think I know what happened. It was the summit move for 13,656. I had the previous summit (13,660 A) checked but it looks like that one was deleted and not transferred to the new peak, not unexpected I guess. So, folks may need to recheck that one.

EDIT #2: Okay. 13,660A was moved to 13,654, a new unranked peak. If you climbed the new lidar summit, you did not have a checkbox to check before the update, that's why I was one short.

Thanks for pushing out the update!!
Last edited by HikerGuy on Sat Dec 09, 2023 11:44 am, edited 3 times in total.
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Re: 13er LiDAR Elevations + Checklists

Post by HikerGuy »

Bill,

There are some peak labeling issues with some UNs where the elevation changed.

UN 13,708 should be UN 13,715
UN 13,660 should be UN 13,654
Another UN 13,660 should be UN 13,645
UN 13,517 should be UN 13,533
UN 13,510 (near Telluride Peak) should be UN 13,509 (near Telluride Peak)
UN 13,401 should be 13,403
UN 13,300 (near Lookout Peak) should be UN 13,307 (near Lookout Peak)
UN 13,300 (near La Plata Peak) should be UN 13,288 (near La Plata Peak)
UN 13,230 should be UN 13,228
UN 13,220 should be UN 13,221
UN 13,180 should be UN 13,179
UN 13,145 should be UN 13,148
UN 13,140 (near "Weminuche Peak") should be UN 13,144 (near "Weminuche Peak")
UN 13,140 (near Coney Benchmark) should be UN 13,138 (near Coney Benchmark)
UN 13,123 should be UN 13,128
UN 13,100 should be UN 13,068
UN 13,060 (near Peters Peak) should be UN 13,058 (near Peters Peak)
UN 13,060 (near Silver Mountain) should be UN 13,040 (near Silver Mountain)
UN 13,020 (near Baldy Cinco) should be UN 13,030 (near Baldy Cinco)
UN 13,030 should be UN 13,027
UN 13,020 should be UN 13,015
UN 13,020 (near San Luis Peak) should be UN 13,005 (near San Luis Peak)
UN 13,010 should be UN 12,992

Thanks!
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Re: 13er LiDAR Elevations + Checklists

Post by bdloftin77 »

Thank you, Bill!!
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Re: 13er LiDAR Elevations + Checklists

Post by BillMiddlebrook »

Thanks! Sorry you had to spend time gathering those missed changes. I ran the query to update "Unnamed" peak names, etc. but only ran it for unranked peaks. Duh

Should be set now.
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