Question 1: Just calculate the distance between two points by calculating the coordinate deviation!

Or x-x, y-y.

Question 2: As a math problem, how to calculate the deviation value of coordinates?

Question 3: Highway coordinates are used to calculate the lateral deviation and longitudinal deviation of the highway. How to calculate and set m 1 as the longitudinal observation error and m2 as the lateral observation error, then the total mean error is m = sqr (m12+m2 2) and m is the point mean error. The error of longitudinal observation comes from side length observation, and the transverse median error comes from angle observation, so let μ be the median error of unit length of side length observation and mβ be the median error of angle measurement. In seconds (), then m 1=μ*S and m2=mβ *S/ρ are brought into the above formula, and the formula of the median error of polar coordinates is: m = sqr (. However, this formula does not take into account the possible systematic errors and initial azimuth errors in side length measurement. If this effect is considered, the formula should be written as: m = sqr ((μ 2+λ 2) 2+((mβ 2+mα 2)/ρ) 2) * s (where λ is the systematic error of ranging.

Question 4: The coordinates have been measured in the coordinate measurement. How to calculate the offset between the measured coordinates and the known coordinate points in the drawing? 1 species, directly say how much is the distance difference,

Two kinds, the rectangular coordinate system of drawing axis is the subtraction of two coordinates, X error value and Y error value.

The professional point is the x error value and y error value of the building coordinate system.

Generally speaking, there are two kinds, which are easier to understand by comparing with drawings.

Question 5: in the same coordinate system, some points are biased according to the coordinates, please answer them by experts! 50 points is normal, there will be some systematic errors!

Question 6: Ask for help. There are many formulas for calculating the error in coordinate measurement.

There are errors in elevation, points, edges and angles.

This problem must be specific, not general, brother.