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Rotating a survey grid to suit another.
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Dave
May 21, 2004, 11:14:56 AM5/21/04
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Hi
I'm not a surveyor so bear with me. I'm trying to set out using a total
station certain points of a new building. I have coordinates of the
building corners in relation to the topographical survey. To set out the
building corners is not a problem. What I want to do is rotate the survey
grid to suit the design grid of the new building so as that at a later date
I can easily set out using the building layout drawings.
I'm not a surveyor so bear with me. I'm trying to set out using a total
station certain points of a new building. I have coordinates of the
building corners in relation to the topographical survey. To set out the
building corners is not a problem. What I want to do is rotate the survey
grid to suit the design grid of the new building so as that at a later date
I can easily set out using the building layout drawings.
Hope this makes sense!
Thanks
Dave
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Dave
May 23, 2004, 8:02:08 AM5/23/04
to
Not to worry. I found the following on Google
Z Rotation
Matrix: [ cos(theta) sin(theta) 0 0 ]
[ -sin(theta) cos(theta) 0 0 ]
[ 0 0 1 0 ]
[ 0 0 0 1 ]
Algebra: tempx = x * cos(theta) - y * sin(theta)
tempy = x * sin(theta) + y * cos(theta)
x = tempx
y = tempy
z unaffectedSeems to work."Dave" <da...@hasnoemail.com> wrote
in message news:40ae1cee$1...@mk-nntp-2.news.uk.tiscali.com...
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