Cartography
Re: Cartography
For me...
Contour lines give all the relief information I require, especially when combined with features like rivers. Shading merely duplicates the info (thus introducing unnecessary clutter) but in a less accurate way.
Contour lines give all the relief information I require, especially when combined with features like rivers. Shading merely duplicates the info (thus introducing unnecessary clutter) but in a less accurate way.
Re: Cartography
Nice thing about modern computer map display is you can set the degree of shading drawn so if you don't like it you can reduce it and if you love it you can have it more prominent - we can all be happy.
Ian
Ian
Re: Cartography
I happened upon a PDF (dated 2008) today that states "From Mid 2007 Rock features are being changed from Black to Grey" (http://apd.anquet.com/maplegends/unique ... apping.pdf) the grey lets the contours show through better. Here is Scafell Pike in the latest digital edition:-ChrisButch wrote: ↑7 Jan 2022, 6:12pmProblems arise when the general obscures the specific. This is one of the shortcomings of the current OS 1:25k series, which are often guilty of obscuring contour lines with generalised ground surface indications. Admittedly this is more of a problem for hillwalking than cycling. The South Harris sheet is an extreme example.
Former member of the Cult of the Polystyrene Head Carbuncle.
Re: Cartography
I was just looking at Google Earth and here, of course, the shadows are on the correct side.
Here's Glen Shiel. Doesn't look too inverted but it helps if you know the area.
Here's Glen Shiel. Doesn't look too inverted but it helps if you know the area.
Re: Cartography
I think 1:100000 is a better scale for cycling than 1:50000. For walking or local exploring, 1:25000 is great.
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Re: Cartography
I agree about the cycling especially for really long journeys. I am a paper map user so carrying less sheets helps. And planning ahead is handy and compact.
Less convinced about walking.
I like the size of the 1:50000.
It has sufficient info to be accurate while avoiding too much detail and large sheet size.
But when I buy a map (and they are now prohibitively expensive) I nearly always go for a 50000.
It's all just personal preference.
- Traction_man
- Posts: 327
- Joined: 10 Jan 2020, 5:30pm
- Location: Bangor NI
Re: Cartography
I like the 100k scale for planning routes but on the road prefer to have 50k and off road use 25k mapping scales.PDQ Mobile wrote: ↑8 Jan 2022, 11:14amI agree about the cycling especially for really long journeys. I am a paper map user so carrying less sheets helps. And planning ahead is handy and compact.
Less convinced about walking.
I like the size of the 1:50000.
It has sufficient info to be accurate while avoiding too much detail and large sheet size.
But when I buy a map (and they are now prohibitively expensive) I nearly always go for a 50000.
It's all just personal preference.
On cost, for GB the OS 50k Landranger series retails at £6.29 per map using Dash4It
https://dash4it.co.uk/catalog/category/ ... aps/id/47/
with further discounts periodically, worth signing up for their email news.
At this price OS maps represent good value for money these days, relative to other costs which seem to be getting worse and worse.
Cheers,
Keith
Re: Cartography
1:50k is fine for cycling on road – as long as you don't ride off the edge of the map, which is all too easy to do.
All moot now so many of us have maps of variable scale in our pockets and on our bars!
All moot now so many of us have maps of variable scale in our pockets and on our bars!
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- Posts: 4659
- Joined: 2 Aug 2015, 4:40pm
Re: Cartography
Thanks for that.Traction_man wrote: ↑8 Jan 2022, 11:41am
I like the 100k scale for planning routes but on the road prefer to have 50k and off road use 25k mapping scales.
On cost, for GB the OS 50k Landranger series retails at £6.29 per map using Dash4It
https://dash4it.co.uk/catalog/category/ ... aps/id/47/
with further discounts periodically, worth signing up for their email news.
At this price OS maps represent good value for money these days, relative to other costs which seem to be getting worse and worse.
Cheers,
Keith
Good deal.
Re: Cartography
Or use your We Are Cycling UK discount.
Re: Cartography
For planning (and printing if you have a decent printer), you can get access to the entire country at Landranger and Explorer detail levels for £20Traction_man wrote: ↑8 Jan 2022, 11:41am
On cost, for GB the OS 50k Landranger series retails at £6.29 per map using Dash4It
https://dash4it.co.uk/catalog/category/ ... aps/id/47/
A novice learning...
“the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible.”
“the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible.”
Re: Cartography
Mountain rescue advice is to use 1:50 OS maps in mountainous terrain - too much confusing clutter on 1:25
Showing rocky terrain doesn't actually tell you if it can be scrambled through or not
Showing rocky terrain doesn't actually tell you if it can be scrambled through or not
Cheers
J Bro
J Bro
Re: Cartography
It's interesting how important shading orientation can be. When I use it on my topomaps, I almost always light from the SW as any other orientation looks wrong to me. Here is a quick example using the Weald of SE England lit from the SW, NW, NE & SE. Only the lighting from the SW looks right to me. You may disagree. It seems to be very personal.
geomannie
Re: Cartography
The discussion of lighting direction is very interesting as it reminds of a definitely non terrestrial problem I had when doing a couple of Open University modules on planetary science. Part of the course involved studying and interepreting planetary landscapes from photos (the Moon, Mars, the Jovian satellites). There were times I really struggled to see craters and would persistently interpret them as round hills rather than depressions. That could have been due my years of experience with map shading (esp on Barts maps) (ie bumps are shaded anyway) or due to the direction of illumination. Eventually and with conscious will I was able to overcome it but it was really difficult! Few of the other students seemed to have quite the same problem. I should have asked how many were cyclists or hill walkers!