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authorjulien2512 <moquet.julien@gmail.com>2016-12-07 23:17:47 +0100
committerKristian Evers <kristianevers@gmail.com>2016-12-07 23:17:47 +0100
commite479f92c3948e2deca63455cb25890811711bc5e (patch)
tree762e8716eed69bd2ec18d0daf977c640ed729717 /docs
parente379fc8e69afb351f39f45b894e29f3b0114273d (diff)
downloadPROJ-e479f92c3948e2deca63455cb25890811711bc5e.tar.gz
PROJ-e479f92c3948e2deca63455cb25890811711bc5e.zip
Improved layout in documentation rst-files
Diffstat (limited to 'docs')
-rw-r--r--docs/source/projections/calcofi.rst31
-rw-r--r--docs/source/projections/cass.rst4
-rw-r--r--docs/source/projections/eqc.rst3
-rw-r--r--docs/source/projections/tmerc.rst4
4 files changed, 20 insertions, 22 deletions
diff --git a/docs/source/projections/calcofi.rst b/docs/source/projections/calcofi.rst
index 6588bcca..3c1e5f7a 100644
--- a/docs/source/projections/calcofi.rst
+++ b/docs/source/projections/calcofi.rst
@@ -5,8 +5,7 @@ Cal Coop Ocean Fish Invest Lines/Stations
********************************************************************************
The CalCOFI pseudo-projection is the line and station coordinate system of the
-California Cooperative Oceanic Fisheries Investigations program, known as CalCOFI,
-for sampling offshore of the west coast of the U.S. and Mexico.
+California Cooperative Oceanic Fisheries Investigations program, known as CalCOFI, for sampling offshore of the west coast of the U.S. and Mexico.
+---------------------+----------------------------------------------------------+
| **Classification** | Conformal cylindrical |
@@ -29,31 +28,25 @@ for sampling offshore of the west coast of the U.S. and Mexico.
:alt: Cal Coop Ocean Fish Invest Lines/Stations
The coordinate system is based on the Mercator projection with units rotated -30
-degrees from the meridian so that they are oriented with the coastline of the Southern
-California Bight and Baja California. Lines increase from Northwest to Southeast.
+degrees from the meridian so that they are oriented with the coastline of the Southern California Bight and Baja California.
+Lines increase from Northwest to Southeast.
A unit of line is 12 nautical miles. Stations increase from inshore to offshore.
-A unit of station is equal to 4 nautical miles. The rotation point is located at
-line 80, station 60, or 34.15 degrees N, -121.15 degrees W, and is depicted by
-the red dot in the figure. By convention, the ellipsoid of Clarke 1866 is used to
-calculate CalCOFI coordinates.
+A unit of station is equal to 4 nautical miles.
+The rotation point is located at line 80, station 60, or 34.15 degrees N, -121.15 degrees W, and is depicted by the red dot in the figure.
+By convention, the ellipsoid of Clarke 1866 is used to calculate CalCOFI coordinates.
The CalCOFI program is a joint research effort by the U.S. National Oceanic and
-Atmospheric Administration, University of California Scripps Oceanographic Institute,
-and California Department of Fish and Game. Surveys have been conducted for the
-CalCOFI program since 1951, creating one of the oldest and most scientifically
-valuable joint oceanographic and fisheries data sets in the world. The CalCOFI
-line and station coordinate system is now used by several other programs including
-the Investigaciones Mexicanas de la Corriente de California (IMECOCAL) program
-offshore of Baja California. The figure depicts some commonly sampled locations
-from line 40 to line 156.7 and offshore to station 120. Blue numbers indicate line
-(bottom) or station (left) numbers along the grid. Note that lines spaced at
-approximate 3-1/3 intervals are commonly sampled, e.g., lines 43.3 and 46.7.
+Atmospheric Administration, University of California Scripps Oceanographic Institute, and California Department of Fish and Game.
+Surveys have been conducted for the CalCOFI program since 1951, creating one of the oldest and most scientifically valuable joint oceanographic and fisheries data sets in the world.
+The CalCOFI line and station coordinate system is now used by several other programs including the Investigaciones Mexicanas de la Corriente de California (IMECOCAL) program offshore of Baja California.
+The figure depicts some commonly sampled locations from line 40 to line 156.7 and offshore to station 120. Blue numbers indicate line (bottom) or station (left) numbers along the grid. Note that lines spaced at approximate 3-1/3 intervals are commonly sampled, e.g., lines 43.3 and 46.7.
Usage
###############################################################################
A typical forward CalCOFI projection would be from lon/lat coordinates on the
-Clark 1866 ellipsoid. For example::
+Clark 1866 ellipsoid.
+For example::
proj +proj=calcofi +ellps=clrk66 -E <<EOF
-121.15 34.15
diff --git a/docs/source/projections/cass.rst b/docs/source/projections/cass.rst
index e8abfac7..3fadd737 100644
--- a/docs/source/projections/cass.rst
+++ b/docs/source/projections/cass.rst
@@ -27,7 +27,9 @@ Although the Cassini projection has been largely replaced by the Transverse Merc
Usage
#####
-There has been little usage of the spherical version of the Cassini, but the ellipsoidal Cassini-Soldner version was adopted by the Ordnance Survey for the official survey of Great Britain during the second half of the 19th century [Steers1970]_. Many of these maps were prepared at a scale of 1:2,500. The Cassini-Soldner was also used for the detailed mapping of many German states during the same period.
+There has been little usage of the spherical version of the Cassini, but the ellipsoidal Cassini-Soldner version was adopted by the Ordnance Survey for the official survey of Great Britain during the second half of the 19th century [Steers1970]_.
+Many of these maps were prepared at a scale of 1:2,500.
+The Cassini-Soldner was also used for the detailed mapping of many German states during the same period.
Example using EPSG 30200 (Trinidad 1903, units in clarke's links)::
diff --git a/docs/source/projections/eqc.rst b/docs/source/projections/eqc.rst
index 06998c75..be431977 100644
--- a/docs/source/projections/eqc.rst
+++ b/docs/source/projections/eqc.rst
@@ -29,7 +29,8 @@ The simplest of all projections. Standard parallels (0° when omitted) may be sp
Usage
########
-Because of the distortions introduced by this projection, it has little use in navigation or cadastral mapping and finds its main use in thematic mapping. In particular, the plate carrée has become a standard for global raster datasets, such as Celestia and NASA World Wind, because of the particularly simple relationship between the position of an image pixel on the map and its corresponding geographic location on Earth.
+Because of the distortions introduced by this projection, it has little use in navigation or cadastral mapping and finds its main use in thematic mapping.
+In particular, the plate carrée has become a standard for global raster datasets, such as Celestia and NASA World Wind, because of the particularly simple relationship between the position of an image pixel on the map and its corresponding geographic location on Earth.
The following table gives special cases of the cylindrical equidistant projection.
diff --git a/docs/source/projections/tmerc.rst b/docs/source/projections/tmerc.rst
index f2a85f96..03aa2830 100644
--- a/docs/source/projections/tmerc.rst
+++ b/docs/source/projections/tmerc.rst
@@ -31,7 +31,9 @@ Usage
#####
-Prior to the development of the Universal Transverse Mercator coordinate system, several European nations demonstrated the utility of grid-based conformal maps by mapping their territory during the interwar period. Calculating the distance between two points on these maps could be performed more easily in the field (using the Pythagorean theorem) than was possible using the trigonometric formulas required under the graticule-based system of latitude and longitude. In the post-war years, these concepts were extended into the Universal Transverse Mercator/Universal Polar Stereographic (UTM/UPS) coordinate system, which is a global (or universal) system of grid-based maps.
+Prior to the development of the Universal Transverse Mercator coordinate system, several European nations demonstrated the utility of grid-based conformal maps by mapping their territory during the interwar period.
+Calculating the distance between two points on these maps could be performed more easily in the field (using the Pythagorean theorem) than was possible using the trigonometric formulas required under the graticule-based system of latitude and longitude.
+In the post-war years, these concepts were extended into the Universal Transverse Mercator/Universal Polar Stereographic (UTM/UPS) coordinate system, which is a global (or universal) system of grid-based maps.
The following table gives special cases of the Transverse Mercator projection.