Nice to release these libs. UNAVCO has a nice free tool called teqc, but does not release the source.
Also found that link with many interesting things with source code:
http://www.ngs.noaa.gov/gps-toolbox/exist.htm
Admitedly, all this is not very useful for geocaching;)
do lines of latitude get closer together as you go closer to the poles..?
Nope, still one degree.
Which also defines 60 nautical miles. A nautical mile (a minute of latitude) is usually accepted to be constant at 1852 metres (or meters). But due to the flattening at the poles, I am pretty sure this is not true. So the answer is yes, they get closer from the equator to the pole.
Doing the maths on a modern datum, I found 1854 m at the equator and 1850m at the poles.
You are so right. I think there are two reasons for that. First, the knowledge of positions has been and is somewhat still considered a military secret.
Many mapping agencies (all?) come from a military background, so they are naturally reluctant to reveal the data. Second, they are making loads of green by selling the information to professionals who need them (e.g. surveyors).
That is actually a good question, but difficult to implement. Google is getting closer with that local thing.
I also read that some people were taking pictures of the streets and geo-reference them (forgot where). You could virtually check how a street or a whole town looks like.
Some places forbid waterbeds for risks of water damage. This shouldn't be a problem with this liquid as long as the envelope is opaque. If it leaks, it will simply evaporate.
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Nice to release these libs. UNAVCO has a nice free tool called teqc, but does not release the source. Also found that link with many interesting things with source code: http://www.ngs.noaa.gov/gps-toolbox/exist.htm Admitedly, all this is not very useful for geocaching ;)
Nope, still one degree.
Which also defines 60 nautical miles. A nautical mile (a minute of latitude) is usually accepted to be constant at 1852 metres (or meters). But due to the flattening at the poles, I am pretty sure this is not true. So the answer is yes, they get closer from the equator to the pole.
Doing the maths on a modern datum, I found 1854 m at the equator and 1850m at the poles.
Anyone concur?
You are so right. I think there are two reasons for that. First, the knowledge of positions has been and is somewhat still considered a military secret. Many mapping agencies (all?) come from a military background, so they are naturally reluctant to reveal the data. Second, they are making loads of green by selling the information to professionals who need them (e.g. surveyors).
That is actually a good question, but difficult to implement. Google is getting closer with that local thing. I also read that some people were taking pictures of the streets and geo-reference them (forgot where). You could virtually check how a street or a whole town looks like.
gcc -D_BSD_SOURCE ping.c omni.c vers.c -o ping
Some places forbid waterbeds for risks of water damage. This shouldn't be a problem with this liquid as long as the envelope is opaque. If it leaks, it will simply evaporate.
One question:
On a dual boot machine, can I see the other ext3/Reiser etc. partitions and mount them with these tools?
What about cygwin?