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Restructure documentation folder (#589)
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* Rename docs directory to Documentation.

* Rename documentation folder, split into reference and specification.

* Update image links

* Move the evaluation doc from the wiki
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drinckes authored Jun 14, 2024
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348 changes: 348 additions & 0 deletions Documentation/Reference/comparison.adoc

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Expand Up @@ -184,7 +184,7 @@ used for formatting are referred to as "characters".
Open Location Codes are encodings of WGS84 latitude and longitude
coordinates in degrees. Decoding a code returns an area, not a point. The
area of a code depends on the length (longer codes are more precise with
smaller areas). A two-digit code has height and width<<height_width>> of 20
smaller areas). A two-digit code has height and width <<height_width>> of 20
degrees, and with each pair of digits added to the code, both height and
width are divided by 20.

Expand All @@ -199,7 +199,7 @@ to be truncated, resulting in a larger area.

[[fig_olc_area]]
.Comparing areas of four and six digit Open Location Codes
image::images/code_areas.png[width=400,height=350,align="center"]
image::../images/code_areas.png[width=400,height=350,align="center"]

The large rectangle in <<fig_olc_area>> is the Open Location Code 8FVC (1
degree height and width). The smaller rectangle is the code 8FVC22 (1/20
Expand All @@ -209,7 +209,7 @@ A 10 digit code represents a 1/8000° by 1/8000° area. (At the equator,
this is approximately 13.9 meters x 13.9 meters.)

.10 digit Open Location Code (1/8000 degree resolution), 10.5m x 13.9m
image::images/olc_10_character.png[width=406,height=272,align="center"]
image::../images/olc_10_character.png[width=406,height=272,align="center"]

A 10 digit code will be precise enough for many locations. However, in
areas where building density is high (such as informal settlements,
Expand All @@ -229,7 +229,7 @@ Using a single grid refinement step, we have an 11 digit code that
represents a 1/32000° by 1/40000° area (roughly 3.4 by 2.7 meters at the equator).

.A 10 digit code divided into its grid. In this location, each small square is approximately 2.6m x 2.8m
image::images/olc_11_grid.png[width=406,height=272,align="center"]
image::../images/olc_11_grid.png[width=406,height=272,align="center"]

The first approach (where a pair of digits is added for each step)
provides codes that can be visually compared, or alphabetically ordered to
Expand Down Expand Up @@ -326,7 +326,7 @@ Refer to link:specification.md[Open Location Code Specification].
[bibliography]
== Notes

- [[[poste_restante]]]Post restante (French: lit. post remaining or general
- [[[poste_restante]]] Post restante (French: lit. post remaining or general
delivery) is a service where a delivery is made to a post office that holds
the package until the recipient calls for it.
- [[[height_width]]] "Height" and "width" are used as a shorthand for north/south
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