[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
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  Reporter:  geografik    |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  new
  Priority:  normal       |  Milestone:  7.2.1
 Component:  Database     |    Version:  7.2.0
Resolution:               |   Keywords:  Line_height, v.in.db, kml
       CPU:  All          |   Platform:  All
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Description changed by martinl:

Old description:

> 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.

New description:

 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.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3286#comment:2>
GRASS GIS <https://grass.osgeo.org>