How to distinguish and label coordinates and relative coordinates in AutoCAD2020

php Xiaobian Youzi brings you the distinction and labeling methods of AutoCAD2020 coordinates and relative coordinates. In AutoCAD drawing, coordinates and relative coordinates are concepts often used when drawing graphics. The correct understanding and application of these two coordinates is the key to the drawing process. This article will introduce the concepts and usage of coordinates and relative coordinates in detail to help you better master AutoCAD drawing skills and improve drawing efficiency.

As shown in the figure below, we take point O, point A, point B and related graphics as examples to explain the concepts of coordinates and polar coordinates in AutoCAD.

In the figure, point O is the coordinate origin in AutoCAD, the X-axis is horizontally to the right, and the Y-axis is vertically upward. The coordinate of the coordinate origin is (0.0). We can enter the coordinates of a point based on this coordinate to determine the location of the point.

Suppose we draw a straight line with the starting point coordinates (500, 400). The drawing method is: click the straight line command - enter the coordinates 500, 400 (note that the coordinate values ​​of the X-axis and Y-axis must be separated by commas; in the dynamic input box, press the Tab key to switch to the Y-axis input box) - press Enter key.

You can see the coordinates of the current point from the picture. This coordinate value is relative to the system origin.

Relative coordinates take a certain point specified in the figure as the reference origin, and the coordinates of the next point are relative to this point. For example, taking point A as the reference origin, the relative coordinates of point B are (50, 50).

Draw a straight line using relative coordinates: Select the straight line command - Specify the starting point as point A - Enter the end point coordinates (50, 50) (X and Y values ​​are separated by commas, If it is a fixed input box, it needs to be separated by commas) - The end point of the straight line is point B.

According to the above steps, we drew the remaining graphics at once, and the line segment dimensions can be obtained from the picture.

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