diff options
Diffstat (limited to 'docs/source/operations')
| -rw-r--r-- | docs/source/operations/projections/col_urban.rst | 49 | ||||
| -rw-r--r-- | docs/source/operations/projections/index.rst | 1 | ||||
| -rw-r--r-- | docs/source/operations/projections/tmerc.rst | 2 |
3 files changed, 51 insertions, 1 deletions
diff --git a/docs/source/operations/projections/col_urban.rst b/docs/source/operations/projections/col_urban.rst new file mode 100644 index 00000000..df2873dd --- /dev/null +++ b/docs/source/operations/projections/col_urban.rst @@ -0,0 +1,49 @@ +.. _col_urban: + +******************************************************************************** +Colombia Urban +******************************************************************************** + +.. versionadded:: 7.2 + ++---------------------+----------------------------------------------------------+ +| **Classification** | Miscellaneous | ++---------------------+----------------------------------------------------------+ +| **Available forms** | Forward and inverse ellipsoidal projection | ++---------------------+----------------------------------------------------------+ +| **Alias** | col_urban | ++---------------------+----------------------------------------------------------+ +| **Domain** | 2D | ++---------------------+----------------------------------------------------------+ +| **Input type** | Geodetic coordinates | ++---------------------+----------------------------------------------------------+ +| **Output type** | Projected coordinates | ++---------------------+----------------------------------------------------------+ + +From :cite:`IOGP2018`: + + The capital cites of each department in Colombia use an urban projection for large + scale topographic mapping of the urban areas. It is based on a plane through + the origin at an average height for the area, eliminating the need for corrections + to engineering survey observations. + + proj-string: ``+proj=col_urban`` + +Parameters +################################################################################ + +.. include:: ../options/lon_0.rst + +.. include:: ../options/lat_0.rst + +.. include:: ../options/ellps.rst + +.. include:: ../options/x_0.rst + +.. include:: ../options/y_0.rst + +.. option:: +h_0=<value> + + Projection plane origin height (in metre) + + *Defaults to 0.0.* diff --git a/docs/source/operations/projections/index.rst b/docs/source/operations/projections/index.rst index 169187cc..48420971 100644 --- a/docs/source/operations/projections/index.rst +++ b/docs/source/operations/projections/index.rst @@ -34,6 +34,7 @@ Projections map the spherical 3D space to a flat 2D space. cea chamb collg + col_urban comill crast denoy diff --git a/docs/source/operations/projections/tmerc.rst b/docs/source/operations/projections/tmerc.rst index 899c6ac0..3a18904f 100644 --- a/docs/source/operations/projections/tmerc.rst +++ b/docs/source/operations/projections/tmerc.rst @@ -122,7 +122,7 @@ to Krüger :cite:`Krueger1912` who gave the series expansions accurate to :math:`n^4`, where :math:`n = (a-b)/(a+b)` is the third flattening. These series were extended to sixth order by Engsager and Poder in :cite:`Poder1998` and :cite:`Engsager2007`. This gives full -double-precision accuracy withing 3900 km of the central meridian (about +double-precision accuracy within 3900 km of the central meridian (about 57% of the surface of the earth) :cite:`Karney2011tm`. The error is less than 0.1 mm within 7000 km of the central meridian (about 89% of the surface of the earth). |