[TexasARDF] [ARDF] 1:10000 vs. 1:150000

[Jennifer Harker]

The scale at Bastrop, at least what the OCAD file uses, is 1:15000.  For the last several years, the o-meet shorter courses have been at 1:10000, and I've appreciated it in some of the more complex areas.  I think the map has too much detail in some places for 1:15000.

That said, I think the level of detail needed for ARDF, as long as you have an idea of where you are, is less than that of an orienteering course where you've got to find just the right ditch junction.  You won't get lost at 1:15000, but you might have trouble keeping close contact with the map here and there.  All the detail is there - I printed out a map at Kinko's today to check the process - it's just very cramped in spots.


The map actually fits very nicely, shapewise, on 8.5x11 at 1:10000 with little free space for titles and legends, but the longest course I seem to be able to plan on it is about 6.5K.  We have some constraints we've made, like having the start and finish near bathrooms and parking.  Unfortunately, the shorter courses were winding up between 4K and 6K, which is just a bit too short.  And on 2m, it wasn't as technically challenging as it could be if I had a little more space to play with.

This is subject to change (as is most stuff at this point), but we're
inclined to go with 1:15000 and 8.5x11.  It's still readable.  Y'all
won't have too much trouble determining what's a trail or road, and the
overall terrain, from the map at that scale.

I promise that it won't be at 1:150,000 like the subject says.  ;-)



---Jen

----- Original Message ----
From: Matthew Robbins <cedarcreek at gmail.com>
To: Kenneth E. Harker <kenharker at kenharker.com>
Cc: ardf at kkn.net; texasardf at texasardf.org
Sent: Saturday, January 26, 2008 3:08:03 PM
Subject: Re: [ARDF] [TexasARDF] 1:10000 vs. 1:150000

My 
question 
back 
to 
you 
would 
be: 
What 
scale 
is 
usually 
used 
at
Bastrop?  
A 
lot 
of 
times 
the 
map 
is 
made 
for 
one 
or 
the 
other 
scale.
There 
is 
a 
convention 
that 
the 
1:10000 
printed 
map 
is 
supposed 
to 
be 
a
pure 
150% 
print 
of 
the 
1:15000 
map, 
but 
that's 
often 
not 
the 
case,
especially 
for 
older 
maps.

If 
there 
is 
a 
lot 
of 
detail, 
1:10000 
is 
really 
nice.

Another 
thought 
is 
that 
maps 
usually 
have 
border 
information, 
like 
a
title, 
legend, 
copyright, 
mapper, 
revision 
dates, 
etc.  
Any
experienced 
competitor 
can 
just 
cut 
away 
the 
entire 
border 
and 
leave
only 
the 
actual 
map.  
I'd 
propose 
that 
a 
1:10000 
map 
only, 
no 
title,
legend, 
etc, 
should 
preferably 
fit 
on 
8.5x11.  
If 
that 
overly
constrains 
your 
course, 
then 
the 
two 
options 
are 
(1) 
jump 
to 
1:15000,
or 
(2) 
tell 
everyone 
how 
big 
the 
mapboard 
needs 
to 
be 
at 
1:10000.
(Typically 
a 
map 
of 
the 
border 
only 
is 
posted, 
with 
the 
map 
itself 
cut
out).

Matthew
Cincinnati

On 
Jan 
26, 
2008 
12:53 
PM, 
Kenneth 
E. 
Harker 
<kenharker at kenharker.com> 
wrote:
>  
  
  
The 
organizing 
committee 
for 
the 
2008 
USA 
ARDF 
Championships 
is 
having
> 
an 
internal 
debate 
about 
the 
map 
scale 
to 
use 
for 
the 
competition.  
We 
would
> 
like 
to 
have 
the 
maps 
fit 
on 
an 
8.5" 
x 
11" 
sheet 
of 
paper.
>
> 
1:15000: 
Same 
scale 
as 
used 
in 
World 
Championships.  
We 
can 
probably 
get
>  
  
  
  
  
slightly 
longer 
courses 
on 
the 
maps, 
but 
that 
might 
involve 
slight
>  
  
  
  
  
overlap 
in 
terrain 
from 
day 
1 
to 
day 
2.
>
> 
1:10000: 
Easier 
to 
read, 
including 
some 
terrain 
detail 
(principally 
dry
>  
  
  
  
  
ditch 
markings) 
that 
tend 
to 
get 
lost 
at 
1:150000.  
Courses 
would
>  
  
  
  
  
necessarily 
be 
shorter 
in 
order 
to 
fit 
entirely 
on 
the 
map 
- 
some
>  
  
  
  
  
classes 
would 
probably 
have 
an 
optimal 
course 
length 
< 
6 
km.
>
>  
  
  
I 
would 
like 
to 
get 
a 
sense 
of 
what 
everyone 
would 
prefer.  
In 
2006
> 
in 
North 
Carolina 
we 
used 
1:15000.  
In 
2007 
in 
California 
we 
used 
1:10000.
>
> 
--
> 
Kenneth 
E. 
Harker 
WM5R
> 
kenharker at kenharker.com
> 
http://www.kenharker.com/
>
> 
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> 
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> 
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