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| author | dalia2 <57895979+dalia2@users.noreply.github.com> | 2019-12-12 14:25:40 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-12-12 14:25:40 +0000 |
| commit | 1efec9523d21e7948db2d278635c8881409b9cf8 (patch) | |
| tree | 2ac7fde4db93e75c109d65f2c596275a02a3cc06 /docs/source/operations/projections | |
| parent | e9d6a0b2993c903c8932b68d2812dc02adb26014 (diff) | |
| parent | 5b4e60f4f9ec353f79fba01790a3b945c50cab8e (diff) | |
| download | PROJ-1efec9523d21e7948db2d278635c8881409b9cf8.tar.gz PROJ-1efec9523d21e7948db2d278635c8881409b9cf8.zip | |
Merge branch 'master' into update-grid-alternatives.sql-for-Icealnd
Diffstat (limited to 'docs/source/operations/projections')
| -rw-r--r-- | docs/source/operations/projections/isea.rst | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/docs/source/operations/projections/isea.rst b/docs/source/operations/projections/isea.rst index 1afedc30..adb703a1 100644 --- a/docs/source/operations/projections/isea.rst +++ b/docs/source/operations/projections/isea.rst @@ -4,6 +4,31 @@ Icosahedral Snyder Equal Area ******************************************************************************** +Snyder's Icosahedral Equal Area map projections on polyhedral globes for the +dodecahedron and truncated icosahedron offer relatively low scale and +angular distortion. The equations involved are relatively straight-forward, +and for certain instructional tools and databases, the projections are useful +for world maps. The interruptions remain a disadvantage, as with any low-error +projection system applied to the entire globe :cite:`Snyder1992`. + + ++---------------------+----------------------------------------------------------+ +| **Classification** | Polyhedral, equal area | ++---------------------+----------------------------------------------------------+ +| **Available forms** | Forward, spherical | ++---------------------+----------------------------------------------------------+ +| **Defined area** | Global | ++---------------------+----------------------------------------------------------+ +| **Alias** | isea | ++---------------------+----------------------------------------------------------+ +| **Domain** | 2D | ++---------------------+----------------------------------------------------------+ +| **Input type** | Geodetic coordinates | ++---------------------+----------------------------------------------------------+ +| **Output type** | Projected coordinates | ++---------------------+----------------------------------------------------------+ + + .. figure:: ./images/isea.png :width: 500 px :align: center |