Specifying Relative Cartesian Coordinates AutoCad Help

For the next line segment, let’s try another method of specifying exact distances.

1. Enter @O,15.J.Metric users should enter @O,O.5.JA. short line appears above the endpoint of the last line.

Once again, the @tells AutoCAD that the distance you specify is from the last point picked. But in this example, you give the distance in x and y values. This distance, 0, is given first, followed by a comma, and then the y distance, 0.15. This is how to specify. “stances in relative Cartesian coordinates.

2. Enter @-3,O.J.Metric users should enter @-9,O.J.The result is a drawing that looks like this.

The distance you entered in step 2 was also in x,y values, but here you used a negative value to specify the x distance. Positive values in the Cartesian coordinate system are from left to right and from bottom to top. (You may remember this from your high school geometry class’) If you want to draw a line from right to left, you must designate a negative value.

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3. Now type C..J. This C stands for the Close command. It closes a sequence of line segments. A line connecting the first and last points of a sequence of lines is drawn, and the Line command terminates. The rubber-banding line also disappears, telling you that AutoCAD has finished drawing line segments. You can also use the rubber-banding line to indicate direction while simultaneously entering the distance through the keyboard. See the A Fast Way to Enter Distances sidebar.

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A Fast Way to Enter Distances

A third method for entering distances is to simply point in a direction with a rubber-banding line, and then enter the distance through the keyboard. For example, to draw a line 3 units long from left to right, click the Line tool from the Draw tool bar, click a start point and then move the cursor so the rubber-banding the points to the fight at some arbitrary distance. While holding the cursor in the direction you want; type 3-1. The rubber-banding line becomes a fixed Iine 3 units long.

Posted on November 7, 2015 in Creating Your First Drawing

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