Difference between revisions of "-0 Issue"

Latest revision as of 05:07, 22 May 2012

This issue is closed as the official tool has been updated and most "algebric notation" pages look to be updated to use "-0 notation." Page kept as history and explanation of the notations.

Graticule longitudes and latitudes are indexes that look like relative integers. They are the minimal value of all the points in the graticule if the values are positive, and they are the maximal value of all the points in the graticule if the values are negative.

So (-23.452365°,16.415222°) is located in the Graticule -23,16.

And (23.452365°,-16.415222°) is located in the Graticule 23,-16.

With this notation, 0 and -0 are different values (this rule will be called "-0 notation").

@@ Line 1: / Line 1: @@
-Granicule longitudes and lattitudes are indexes that look like relative integers. They are minimal value of all the points in the graticule if the values are positive, and they are the maximal value of all the points in the graticule if the values are negative.
+'''This issue is closed as the official tool has been updated and most "algebric notation" pages look to be updated to use "-0 notation."''' Page kept as history and explanation of the notations.
+----
-So (-23.452365°,16.415222°) is located in the Ganicule [[-23,16]].
+Graticule longitudes and latitudes are indexes that look like relative integers. They are the minimal value of all the points in the graticule if the values are positive, and they are the maximal value of all the points in the graticule if the values are negative.
-And (23.452365°,-16.415222°) is located in the Ganicule [[23,-16]].
+So (-23.452365°,16.415222°) is located in the Graticule [[-23,16]].
-With this notation, 0 and -0 are different values (this rule will be called "-0 notation").
+And (23.452365°,-16.415222°) is located in the Graticule [[23,-16]].
-== Issue with the official tool ==
-The official tool doesn't accept -0 as an input, which make it difficult to make automatic templates for graticules x -0 or -0 x.
+With this notation, 0 and -0 are different values (this rule will be called "-0 notation").
-The official tool can use "abs" to work this around. If given abs=1 on the url, the official tool will consider the values as being south/west coordinate of the graticule (while this only true for positive lattitude and longitude). (This rule will be called "algebric notation")
-But this workaround doesn't work for the <code>&lt;map</code>...<code>/&gt;</code> element, because the map element doesn't take the abs.
-Another workaround, involving -360 instead of -0 is described in [[Template_talk:Graticule/-0_long_workaround_in_action]]
-== Issue with the [[Active Graticules]]'s page ==
-The "abs workaround" leeds the [[Active Graticules]]'s page into chaos. While most of the graticules use the "-0 notation" (example [[Boston]] is refered as 42 -71), United kingdom mostly use the "algebric notation" (example [[Swindon, United Kingdom|Swindon]] is refered as 51 -2).
-This inconsistency leeds to wrong labels in the official tool.
+[[Category:Algorithm]]