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| author | Kristian Evers <kristianevers@gmail.com> | 2019-12-09 11:46:53 +0100 |
|---|---|---|
| committer | Kristian Evers <kristianevers@gmail.com> | 2019-12-09 11:46:53 +0100 |
| commit | 9b3a80ada06d50feb5cd158dcb807d6942a7b9e4 (patch) | |
| tree | 5b17f21274244b7a2f9fa18ffa182a0157e16bdb /docs/source/operations | |
| parent | 9b66a948fe6e408b76d641fe96833616d6d6926f (diff) | |
| download | PROJ-9b3a80ada06d50feb5cd158dcb807d6942a7b9e4.tar.gz PROJ-9b3a80ada06d50feb5cd158dcb807d6942a7b9e4.zip | |
isea docs: Rewrite intro and reference to reflect actual projection
Previous version was describing oea by mistake. It is also a projection
by Snyder and the isea docs was based on the paper on the oea
projection. This commit fixes that.
Diffstat (limited to 'docs/source/operations')
| -rw-r--r-- | docs/source/operations/projections/isea.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/docs/source/operations/projections/isea.rst b/docs/source/operations/projections/isea.rst index 968d468b..adb703a1 100644 --- a/docs/source/operations/projections/isea.rst +++ b/docs/source/operations/projections/isea.rst @@ -4,16 +4,16 @@ Icosahedral Snyder Equal Area ******************************************************************************** -The Icosaheadra Snyder Equal Area projection is a series of equal-area map -projections. Lines of constant distortion follow approximately oval or -rectangular paths instead of the circles of the Lambert Azimuthal Equal-Area -projection or the straight lines of the Cylindrical Equal-Area projection. The -projection series permits design of equal-area maps of oblong regions with less -overall distortion of shape and scale than equal-area maps on other projections -:cite:`Snyder1988`. +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 | +| **Classification** | Polyhedral, equal area | +---------------------+----------------------------------------------------------+ | **Available forms** | Forward, spherical | +---------------------+----------------------------------------------------------+ |