level curves on google earth
geoet...@gmail.com
how to sort images to a standart scale ex: 1/2000.
Terry Pinnell
>please let me1/ to know how to btain level curves from ggogle earth.2/
>how to sort images to a standart scale ex: 1/2000.
With filters set to show me posts about 'google earth' (and a few
alternatives like 'GE' etc), I nearly missed that one! But I don't
understand what you mean anyway.
Suggest you post a more carefully-typed version in one of the GE
groups at http://groups.google.com/group/earth-help
--
Terry, West Sussex, UK
Happy Trails
I think he's French and his English is a bit odd. What he's asking
for is 1) to get contour lines from Google earth, which I think is a
no. You can add them to Google Earth displays, but afaik you cannot
derive them from GE. I have no idea what he's after in 2), in French
or English.
Terry Pinnell
I'm no GE authority, but I'm sure you're right.
>I have no idea what he's after in 2), in French or English.
I'm guessing wildly that maybe he/she wants to somehow have GE
automatically show views which are at a specific scale, such as the
example of 1:2000. If so, that would obviously have to be a view with
zero tilt. And maybe Terrain would have to be switched off too, for a
strict representation? Also begs question of what 'scale' means in
this context? For a map printed from GE it obviously depends entirely
on printer settings. So maybe he/she means a scale based on screen
dimensions. So that 1cm in the GE window should represent 20m on the
ground.
As to how to do it, once again I don't think there's any in-built
facility, but it shouldn't be hard to do manually. Taking that
example, here's a screenshot in which I drew a line of 20m with the
Ruler, and zoomed carefully until it occupied 1 cm of screen space.
http://www.terrypin.dial.pipex.com/Images/GE-Scale.jpg
Obviously that too depends on other factors, such as my monitor (hp
p930 19" CRT type, approx 4:3 aspect) and the resolution I'm using
(1024 x 768).
Once the zoom is correct, that control could be left untouched, while
any other location/view was displayed.
The grid shown in my screenshot isn't necessary for this, of course,
but it might help in some cases. I got it from the link 'GE Worldwide
MGRS Gridlines Layer' at Barry Hunter's site
http://www.nearby.org.uk/google.html#14