Simplify Polygons

Parameter

Comments

Input features
<in_features>

Input polygon features to be simplified.

Output feature class
<out_feature_class>

New output feature class that will store simplified polygons.

Simplification algorithm
<simplify_alg>

There are two simplification algorithms available:

• POINT_REMOVE - this algorithm being selected removes redundant points from the polygon shape. The algorithm is faster but provides more coarse simplification output.

• BEND_SIMPLIFY - this algorithm removes minor bends along the polygons while preserving the main shape of the original polygons. The algorithm provides better and more appealing simplification output, although is known to be slower in most cases.

Handling topological errors
<handling_errors>

In some cases, the simplification operation may result in topological errors, these can be handled in the following ways:

• NO_CHECK - no check for topological errors will be made.

• FLAG_ERRORS - topological errors will be flagged, if any.

The new field SimLnFlag will be filled with: 0 – no errors, 1 – topological error.

• RESOLVE_ERRORS - topological errors will be resolved in the output polygons.

MinTol and MaxTol fields with minimum and maximum tolerance values will be added.

Simplification tolerance
<tolerance>

The degree at which the simplification operation may affect the input polygon features can be specified as simplification tolerance:

• For the POINT_REMOVE algorithm tolerance means maximum allowable offset.

• For the BEND_SIMPLIFY algorithm tolerance means length of the reference bend baseline.

Minimum area
{min_area}

Specify minimum area. All simplified polygons smaller than the specified minimum area will be removed from the output feature class.

Keep points
<keep_points>

When the simplification algorithm leads to the collapsed polygons with zero geometry there is an option to keep such collapsed polygons as points:

• KEEP - specifies to keep the collapsed polygons as points. The points will be stored in a point feature class at the output feature class location, taking the name of the output feature class plus a suffix _Pnt. This is default option.

• DROP - specifies not to keep the collapsed polygons as points even if they are found in the process.