Create Isolines

Overview

Generate isolines (isophones) by linear interpolation on triangle edges (marching-triangles). One multilines map per PERIOD and per LEVEL is created. Main output table : ISOLINES_NOISE_MAP with : - PERIOD : receivers period label (VARCHAR). - LEVEL : isoline value (DOUBLE). - THE_GEOM : MULTILINESTRING/LINESTRING geometry. Additional output tables : one table per PERIOD, named L<PERIOD>_ISOLINES_NOISE_MAP, containing only the isolines of that PERIOD (same structure as above).

Arguments

Mandatory inputs

receiversTable — Receivers level table

Name of the receivers level table.Shall contain : IDRECEIVER, PERIOD, THE_GEOM, LAEQ (or any field to contour).

Type: String

trianglesTable — Triangles table

Name of the triangles table.Shall contain : PK, THE_GEOM, PK_1, PK_2, PK_3, CELL_ID.

Type: String

Optional inputs

fieldName — Field to contour

Receivers numeric field to contour (e.g. LAEQ).

Type: String

Default: LAEQ

isoClasses — Iso levels (dB)

Comma-separated levels.

Type: String

Default: 35.0,40.0,45.0,50.0,55.0,60.0,65.0,70.0,75.0,80.0,200.0

Output

result — Result output string

This type of result does not allow the blocks to be linked together.

Type: String