Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Off-Topic Discussion
Off-Topic Discussion
Land Surveying Software/formula Suggestions
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Yamaha FJR Motorcycle Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Capt. Bob" data-source="post: 586542" data-attributes="member: 2851"><p>Coming in a little late but.....</p><p></p><p>This is what we use to convert lat. lon. to State Plane. <a href="https://www.ngs.noaa.gov/cgi-bin/spc_getpc.prl" target="_blank">Clicky</a></p><p></p><p>Once you have your coordinates (northings (Y) and eastings (X)) finding the distance between them (inversing) and the line direction(bearing) is usually done with a survey program but....</p><p></p><p>In the old days (think George Washington) this is what you did in the field.</p><p></p><p>Call your two points a & b</p><p></p><p>Now subtract the two northings from each other: Ya-Yb = the change (delta)Y</p><p></p><p>Subtract the two eastings from each other: Xa -Xb = the change (delta) X</p><p></p><p>Now divide: delta X /delta Y = tan of the bearing. Direction is arbitrary on paper (north/top, east/right) You can find the bearing from any good "Functions" book or math (trig) text. There's probably a conversion engine on the internet.</p><p></p><p>For distance you need to square the two (delta X and deltaY))then add those two answers together. Then take the square root of that total. Distance is expressed in feet.</p></blockquote><p></p>
[QUOTE="Capt. Bob, post: 586542, member: 2851"] Coming in a little late but..... This is what we use to convert lat. lon. to State Plane. [URL="https://www.ngs.noaa.gov/cgi-bin/spc_getpc.prl"]Clicky[/URL] Once you have your coordinates (northings (Y) and eastings (X)) finding the distance between them (inversing) and the line direction(bearing) is usually done with a survey program but.... In the old days (think George Washington) this is what you did in the field. Call your two points a & b Now subtract the two northings from each other: Ya-Yb = the change (delta)Y Subtract the two eastings from each other: Xa -Xb = the change (delta) X Now divide: delta X /delta Y = tan of the bearing. Direction is arbitrary on paper (north/top, east/right) You can find the bearing from any good "Functions" book or math (trig) text. There's probably a conversion engine on the internet. For distance you need to square the two (delta X and deltaY))then add those two answers together. Then take the square root of that total. Distance is expressed in feet. [/QUOTE]
Insert quotes…
Verification
Post reply
Off-Topic Discussion
Off-Topic Discussion
Land Surveying Software/formula Suggestions
Top