Approx Vector

This layer (approx_vector) approximates vector figures: lines and polygons.

The operation decreases number of vertices with Douglas-Peucker algorithm.

Example:

{
"action": "approx_vector",
"src": [
"$sample1"
],
"dst": "$sample2",
"settings": {
"classes": [
"my_line",
"interesting_poly"
],
"epsilon": 3
}
}

Settings

  • classes — list of classes to apply transformation. Only classes with shape "line" or "polygon" are allowed.

  • epsilon — approximation accuracy (maximum distance between the original curve and its approximation).

Example

Illustrated examples of usage may be found here.