To Create a Profile by Best Fit

1. Click Home tabCreate Design panelProfile drop-downCreate Best Fit Profile Find .
2. In the Create Best Fit Profile dialog box, under Input Data, specify the type of data from which to create the best fit alignment.
3. Next to Path 1, click .
   Note: If you selected COGO Points or Surface Profile as the Input Type, you can use a drop-down list to select a point group or surface profile.
4. In the drawing, select the objects from which you want to create the best fit profile. Press Enter.
   Note: You may only select objects that are the input type you selected in Step 2. You may not select multiple types of objects.
5. If you wish to create the best fit profile between two paths of objects, next to Path 2, click .
   Note: If you selected Surface Profile as the Input Type, you cannot use a second path.
6. In the drawing, select the objects from which you want to create the best fit profile. Press Enter.
7. If you chose AutoCAD 3D Polylines, Surface Profile, or Feature Lines as the Input Data, click Weeding Options.
8. In the Best Fit Profile Weeding Options dialog box, specify whether to either weed extraneous vertices or insert intermediate vertices. Click OK.
9. Under Best Fit Options, specify the following parameters:
   • Maximum Radius For Curve Detection—Specifies the largest acceptable radius of curves that are created from the input data.
     Note: This value is an estimate. For best results, specify a value that is slightly greater than the largest known radius in the input data.
   • Curve Type—Specifies the type of curve (either Parabola or Circular Arc) to create during the best fit regression.
   • Profile Draw Method – Specifies whether the best fit profile will be drawn above the levels of the input data, or above and below the levels of the input data.
10. Under Creation Settings, specify the following parameters:
    • Profile Name
    • Profile Style
    • Layer
11. Select the Show Report tick box to specify whether to show the Best Fit Profile Report Vista, which shows the results of the regression that was used to create the best fit profile.
12. Select the Label Offsets tick box to insert labels into the drawing that show the offset information that is displayed in the Best Fit Profile Report Vista.
13. Click OK.