How to calculate the attack coordinates of irregular defensive buildings

Count more than half a grid, and round off less than half a grid, and want to calculate the points specifically.

Use the axis to mark the general outline... Then use the auxiliary shaft to help mark the comprehensive!

The same way as the rule, the same as the standard, the same modulus, the same method.

1. Method:

1. For irregular buildings, such as polygons, circular arcs, etc., generally in the form of elevation drawings when the building is expressed, it is often handled in the form of elevations, and for plane sizes, straight line segments, arc lengths, angles, and polar coordinates are combined to express the annotations.

2. More complex buildings, such as space grids, spiral buildings, saddle-shaped warped surfaces, etc., are generally expressed in three-dimensional space, and then divided into local enlarged details to cut and express.

Second, the method of external dimensions and internal dimensions of general building plans. ：

1. External dimensions.

Label three lanes in the horizontal and vertical directions. The outermost dimension indicates the total length and width of the house in the horizontal direction, which is called the total size; The middle dimension of the room and depth of the house is called the axis size (note: under normal circumstances, the distance between the two horizontal walls is called the "bay"; The distance between two longitudinal walls is called the "depth").

The innermost dimension marks the size of the wall segment and door and window openings of the exterior wall of the house, which is called the detail size. If the building plan is symmetrical, it is advisable to mark the dimensions on the left and bottom of the drawing, and if the drawing is asymmetrical, it is necessary to mark the dimensions in all directions of the drawing, or in the local asymmetrical part.

2. Internal dimensions.

The headroom size of the length and width of each room, the relationship between the wall thickness and the axis, the column section, the door and window openings in the house, and the door buttress should be marked.

Let the origin coordinates be (x,y), then the calculated coordinates (x1,y1) are x1=x+s·cos

Inner y1=y+s·sin

where is the bearing.

The capacitance angle, s is the distance.

Calculating azimuth and distance in CAD: The default world coordinate system in CAD is different from the coordinate system used for measurement. X in the world coordinate system is y in the survey coordinate system, and y in the world coordinate system is x in the survey coordinate system.

The calculation of building coordinates, first of all, is to be in a coordinate system. Hand calculations need to be on a grid.

Use the coordinate positive calculation to find the azimuth of the grid and find the distance.

The third or more coordinates you mentioned are actually coordinate conversion, for example, the relative coordinates (construction coordinates) are converted into geodetic coordinates, which can be solved by using 5800 programming.

Calculate the coordinates of the unknown bai point.

Strip required: one known.

coordinates, azimuth, distance.

A lot of known coordinates are given on the DAO engineering drawings, so it is necessary to use the coordinates to calculate the coordinate azimuth, and check the distance from the known point to the unknown point on the drawing. In this case, it is necessary to calculate the coordinates of the unknown point with the coordinates. As for how to calculate, then you need a program, there is a computer version of the calculation program and a Casio calculator program.

Buy a 5800 calculator. It's easy to calculate, mine is 4800 behind.

What coordinates are you going to calculate? Is it traverse or line coordinates?

The result of the two-coordinate point distance formula (see figure) is.

The distance from point 1 to point 2: (x2-x1) 2+(y2-y1) 2, where is the open square root and the symbol is square. The distance from point 1 to point 3, the distance from point 2 to point 3, and so on.

Knowing the three lengths, the angle can be calculated by analytic geometry, the angle: cos-1[(y2-y1) (x2-x1)]; In addition, if you are familiar with CAD, it is simpler, enter the three-point coordinates directly in CAD, and once you query, the distance and angle are out.

As soon as it is put out in the CAD, the difference distance in the X direction is 25634mm, the difference distance in the Y direction is 21493mm, and the distance between the two points is 33452mm. This is the basic stuff and the landlord is advised to take a closer look at the CAD.

The answers of landsea101230 and kssist are both correct. See how you like to do it.

The coordinates in the general plan of the building are represented by a uniform elevation of the Yellow Sea. The method of reading is that each coordinate point is labeled as the (x,y) axis. Take any point as the origin (generally take the lower left corner as the origin), set the coordinates of the origin as (0,0), and subtract the corresponding value of the origin coordinates from the values of other points, and subtract the number on x bits.

Draw the coordinate system, determine the quadrant of the point according to the positive and negative values of the obtained numbers, and intuitively express the relative position of each point, and the distance between each point can be directly calculated by the triangle principle.

You can ask for it directly with the CAD plug-in, but it will be troublesome if you use it once.

If you know the coordinates of a point, press F8 and make a 90-degree line on CAD. Then dist out the long line. Use the calculator to calculate the difference, which is the coordinate of the point.

What you can do is to input the latitude and longitude information in order, then import it into ArcGIS, add the projection information, and you can calculate it.

It's faster to use CAD, draw the point directly with the coordinates, and measure it directly in LI.

Go past the lowest point f to make a straight line x parallel to the x axis', through points A, B, C, D, and E to make a line perpendicular to the x-axis, and x'Handed over to A'、b'、c'、d'、e'dots (as shown in the upper left image).

According to the coordinates of each point, find the hexagon a'abcdd'Area = Sum of the areas of the three right-angled trapezoids (as shown in the upper right image).

Then find the right triangle AFA'、efe'and right-angled trapezoidal dee'd'(as shown in the image below left).

Subtracting the two is the area of the hexagonal abcdef.

It can be cut into triangles, and if the point coordinates are known, the distance between any two points, that is, the length of the bottom of the triangle, can be known, and the function expression of the bottom length can also be found, and then the function expression of the height can be found, and then the height can be found and the area can be found.

Break it into triangles and so you will find the area of the figure of the area, just sum it.