If you have coordinates and parameters of any geometry in some formats like a csv file, Microsoft Excel or Access and if you want to create that geometries in AutoCAD, here is an easy way: Convert the data structure to the format that has the same order which you will input when creating that geometry. Copy this in some text editor like Notepad. For example, if you want to create a line or polyline joining thousands of points, your contents will look like this:
line 1,1 2,2 3,5 3.02,5.5
Dont forget to add a blank line by pressing enter once at the end of file. Now,just copy-paste the contents of the text file into the AutoCAD command prompt and the geometry will be generated.
Another example: circle 2.2,4.5 10 circle 56.97,89.52 20
This will generate two circles with the inputs provided.