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Mapping

Show Profile  Michael Posted: 20 December 2018, 3:12 PM  
Further to mcroxford's posts at the end of Oct, the Mapping Committee has written about the significance of this data for orienteering mapping. If you aren't on their mailing list see www.mapsport.co.nz/mapresources.html

Show Profile  Jymbo Posted: 23 December 2018, 10:45 AM  
Link doesn't work

Show Profile  Michael Posted: 23 December 2018, 11:59 AM  
Yep, mapsport website changing hosts. Email michael (dot) wood (at) mapsport.co.nz and I'll send the bulletin.

Show Profile  Michael Posted: 30 December 2018, 1:21 PM  
Svend Pedersen died yesterday. Throughout a long orienteering career he was a practical thinker and innovator.

When I started my commercial mapping Svend gave me a lightweight mapping board with two 5mm projecting pins, 80mm apart. You punched two holes in your tracing paper and basemap with a standard two-hole punch and they would always be registered. You could have two sheets, eg one just for vegetation. Thanks Svend, still using that mapboard.

Show Profile  Jenni Posted: 30 December 2018, 6:35 PM  
That's very sad news about Svend - he was amazing with everything he did for orienteering still on the sport ident system and the Southern O week events in Waikaia last year.

There was a great article written by Svend about how he started orienteering in the SOC July newsletter which unfortunately doesn't seem to be available with the other SOC newsletters
https://www.sporty.co.nz/SOC/Newsletters-and-Committee-Minutes
but hopefully will be made accessible some time...



Show Profile  Michael Posted: 3 January 2019, 11:25 AM  
Was chatting to Jim about Svend and a couple of other mapping anecdotes came up. When digital aerials were still new, I think he was using graphic software to enhance various colours, to help identify the various boundaries in forest. And way before that he was the one who first suggested to me using a multi-colour ball-point pen on tracing paper (and the type of eraser that goes with it). So glad to get rid of those pesky coloured pencil leads.

Show Profile  davenev Posted: 12 January 2019, 1:09 PM  
Adding the hospital to WHO city map. I will have to use Sprint symbols to cope with all the 'cliffs'. There are several 'canopy'. How high can a canopy roof be? These are one storey buildings built on pillars on a slope..
(Tsinghua University has an 8 storey canopy - the only interruption at ground level were the pillars and lift shafts)
Dave, Whangarei

Show Profile  davenev Posted: 12 January 2019, 1:20 PM  
Lidar Northland. NRC did start a couple of years ago but omitted rocks as they are 'temporary'...
NRC has started again...I have data for BargePark and will finish converting that this month.
I asked about a steep hill we use in town, Parahaki or Parihaka, 0-247m. The download was 12GB and it unzipped to 22GB.. it does cover 3 'sheets' so I may not need all of it. Dave, Whangarei

Show Profile  fraser Posted: 15 January 2019, 8:39 AM  
> I will have to use Sprint symbols to cope with all the 'cliffs'.

I'm curious what ISSOM provides over ISOM in this case? Plus ISOM2017 has the canopy symbol.


> How high can a canopy roof be?

I asked the same question a while back. There is no definitive answer but the general consensus was more towards feeling enclosed. https://maptalk.co.nz/forum/topic.cfm?t=526&page=64


> 22GB

You should definitely crop it down to the area you need. I've used QGIS to do this which is free software.

Show Profile  jeffg Posted: 20 January 2019, 8:17 PM  
On the subject of mapping canopies, what about pergolas that are not roofed but have wooden slats or beams. Feels like a canopy when you're under it, so is that good enough reason to map it?

Show Profile  davenev Posted: 21 January 2019, 9:07 PM  
Thanks Fraser,
Cliffs in black, with all roads/tracks in shades of brown.

The canopy is a building on a slope. From uphill it's a bldg, but has carparking under. From level/downhill it's an enclosed canopy.

The 22GB is in three folders so I'll start with one, to find out where it actually is :-) I suspect one will cover the area I want.
I used QGIS to show the shp so I can see the 0,5,10,15... m asl. The coastal map had negatives, either low tide or Lidar works through shallow water.
Dave


Show Profile  Michael Posted: 22 January 2019, 9:12 AM  
If it feels like a canopy I would map it as a canopy Jeff. Two mappers may come to a different conclusion, and that's OK. Runners will manage. Carpark on a slope is a more difficult problem and I think we may have to avoid mapping these areas with multiple running levels. Pity.

Show Profile  Michael Posted: 22 January 2019, 9:12 AM  
If it feels like a canopy I would map it as a canopy Jeff. Two mappers may come to a different conclusion, and that's OK. Runners will manage. Carpark on a slope is a more difficult problem and I think we may have to avoid mapping these areas with multiple running levels. Pity.

Show Profile  davenev Posted: 30 January 2019, 12:31 PM  
It's only 1 building among 30 so it's on the map. I decided to show it as building, with a strip of canopy along the downhill side/end. We use paper clues for that map, so the clue should start... "under the building.....'
Runners will manage :-)


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