Random Sampling Points

Parameter

Comments

Output feature class
<out_feature_class>

New feature class where new random points will be stored.

Constraints
<random_input_type>

Select constraints for the new random points, these can be:

• FEATURES - selected points, polylines or polygons will be used to constrain random points.

• EXTENT - specified extent will be used to constrain random points.

Extent
<extent>

Specify extent to constrain random points. The extent can be defined using a template dataset or entered manually by specifying the coordinates:

• Left - XMin value

• Right - XMax value

• Bottom - YMin value

• Top - YMax value

Features
<reference_features>

Select feature class to constrain random points, this can be points, polylines or polygons.

Type of sampling
<randomization_type>

Select type of sampling, the following options are available:

• Random - constraining features are randomly filled with the points.

• Quasi-random - constraining features are filled with the points not randomly, but by a regular grid.

Randomization level (0-100%)
<randomization_level>

Specify randomization level. Levels may vary from 0% to 100%. That is, at 0% the points are distributed by the regular grid. Higher sampling randomization level results in higher deviation from the regularity level. At 100% the regularity of sampling points is not visible.

Number of points
<in_points_number_type>

Number of points can be:

• TOTAL - total number of points to be created.

• PER_FEATURE - maximum number of points per feature, if constraining polyline or polygon layer selected.

• PERCENTAGE - percentage from constraining feature count, if constraining point layer selected.

Source of number
<in_points_number_source>

Select source for number of points, this can be:

• CONSTANT - constant number of points will be created.

• FIELD - values of selected field of the constraining polyline or polygon layer will be used as number of points, in this case for each constraining feature there will be generated as many points as given in the selected field for this feature.

Total number of random points
{in_point_number}

Specify total number of random points to be created.

Field with number of points
{in_point_field}

Select a field of the constraining polyline or polygon layer with values to be used as number of random points.

Minimum distance source
<min_distance_source>

Select source for minimum distance allowed between random points, this can be:

• CONSTANT - constant minimum distance between points will be used.

• FIELD - values of selected field of the constraining point, polyline or polygon layer will be used as minimum distance between points.

Minimum distance
{min_distance}

Specify minimum distance allowed between random points and distance units.

Field with minimum distance
{min_distance_field}

Select a field of the constraining point, polyline or polygon layer with values to be used as minimum distance between random points.

Minimum distance units <min_distance_units>

Select units for minimum distance values taken from selected field.

Excluding features
{excluding_features}

Select excluding features for random points. The output random points won't be created at the points, on the polylines or within polygons of the selected excluding feature class.