[GRASS-dev] [GRASS GIS] #3286: Add Line_height as a valid attribute in v.to.db

[GRASS GIS]

#3286: Add Line_height as a valid attribute in v.to.db
---------------------------------------+-------------------------
 Reporter:  geografik                  |      Owner:  grass-dev@…
     Type:  enhancement                |     Status:  new
 Priority:  normal                     |  Milestone:  7.2.1
Component:  Database                   |    Version:  7.2.0
 Keywords:  Line_height, v.in.db, kml  |        CPU:  All
 Platform:  All                        |
---------------------------------------+-------------------------
 Imported kml files that include elevation data are structured generally as
 shown below in GRASS (this is an example of a contour line):

 east, north: -79.7630759471, 39.0874586371
 DBT at corH:
  Type: Line
  Id: 885
  Length: 275.746
  Line_height: 698.602997
  Layer: 1
  Category: 885
  Driver: sqlite
  Database: /Users/sesMacBook/grassdata/KML/corH/sqlite/sqlite.db
  Table: DBT
  Key_column: cat
  Attributes:
    cat: 885
    cat_: 885
    tessellate: -1
    extrude: -1
    visibility: -1

 Elevation data is maintained in the Line_height field which is not a
 recognized attribute, and therefor precludes any further use of these data
 in GRASS - beyond simple display and labling.  3D analysis, for example,
 is not possible.  The suggested improvement to v.to.db would add
 Line_height to the list of attributes considered in this module so that
 the elevation data could become part of the recognized feature attributes
 and be useful in other modules.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3286>
GRASS GIS <https://grass.osgeo.org>