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calculating areas from co-ordinates

calculating areas from co-ordinates

calculating areas from co-ordinates

(OP)
i recently had an exercise where i had to calculate the cross sectional area at a road cross section. The information i had was in the form of levels and widths.

i had the following data,

eg: (x,y format)

(0, 103.21)
(0, 103.25)
(3, 103.32)
(6, 102.22)
(6, 102.27)

So basically its a trapezoidal shape taht i need to calculate area for. i solved this problem by creating a lisp in autocad, which could generate points which were in a text file. then i joined up and used area command. this was tedious and im sure there muist have been a way to do in excel.

RE: calculating areas from co-ordinates

Use yakpol's famous spreadsheet for defining an area by co-ordinates. http://yakpol.net/SectProp.html

corus

RE: calculating areas from co-ordinates

Check out a surveying book. There are a couple of different methods of calculating land areas from a closed traverse. The same methods may be used for cross sections.

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