PointDeviation

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Surface Analysis	Analyze Surface > Point Set Deviation Panels PointDeviation	Point Deviation

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Point Set Deviation

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PointDeviation

Point Deviation

The PointDeviation command uses colored line hairs to visualize the distance between geometry objects.

Measured objects can be point objects, point clouds, curves, polylines, surfaces, polysurfaces, extrusions, and meshes.

Point objects, mesh vertices, and cloud points are directly used to measure. Analysis mesh vertices are used for other object types.
Target objects can be curves, surfaces, polysurfaces, extrusions, and meshes.

Steps

Select objects to measure, and press Enter.
Select the target objects.
Change options in the Point Deviation panel.

Point Deviation options

Start

Run the PointDeviation command to start a new measurement.

End

Stop measuring the current objects.

Options

Ignore

Points beyond this distance are ignored.

Bad point

Points beyond this distance are colored red or ignored.

Good point

Points closer than this distance are colored blue.

On surface

Points on the surface are colored blue.

Proximity angle

Points qualify for display if the hair line is this close to the normal direction on either the curve or the surface. Default is 1 degree. No points disqualify at 180.

Hair scale

The hair is exaggerated by this factor from the actual distance to the curve or surface. Default is 10.

Display hair

Display the hair line for each qualifying point.

Make hair permanent

Create a line object when the command terminates. Line objects are created on layers with names "Point Test <color>".

Automatically apply changes

Update the hair display interactively when options are changed.

Apply

Update the hair display manually when Automatically apply changes is disabled.

Statistics

Point count

The number of points.

Mean distance

The mean distance between the selected points and the target object.

Median distance

The median distance between the selected points and the target object.

Standard deviation

The standard deviation distance between the selected points and the target object.

Maximum distance

The distance from the farthest point to the target object.

Minimum distance

The distance from the nearest point to the target object.

Copy

Copies the statistics to Clipboard.

Command-line option

Visible (Yes / No / Toggle)

Displays or hides the Point Deviation panel, or change its visibility.

CurveDivisions (Curve-only)

Specifies how many sample points to spread along a measured curve to evaluate deviation.

If the curve to measure is pre-selected, this option will not appear. The previous setting is applied.
When a line or polyline is measured, segment endpoints are also evaluated.

PointDeviation

Steps

Start

End

Options

Ignore

Bad point

Good point

On surface

Proximity angle

Hair scale

Display hair

Make hair permanent

Automatically apply changes

Apply

Statistics

Point count

Mean distance

Median distance

Standard deviation

Maximum distance

Minimum distance

Copy

Visible (Yes / No / Toggle)

CurveDivisions (Curve-only)

See also