To teach you how to use Excel to draw curves in AutoCAD

First, enter the coordinate value in Excel. We put the X coordinate values into column A, y coordinate to column B, and then merge columns A and b into column C. Since the two-dimensional coordinates in AutoCAD are separated by commas, we enter =a2& in the C2 cell, and a pair of coordinate values appear in &B2 and C2. We use the mouse to drag the C2 formula to copy, you can get a set of coordinate values.

Then, select the coordinates of the points that you want to draw, and copy them to the Clipboard, that is, press the Copy button in Excel to do the work.

Finally, open AutoCAD, at the command line, type spline (Draw Curve command), appear prompted "object/:", and then click the right mouse button, pop-up menu, in the menu to select the Paste command, so that the coordinates in Excel is transferred to the AutoCAD, and automatically connect to curves. Click the right mouse button, cancel continue to draw the line state, the curve will be painted well.