Template:OSM Location map/sandbox/testcases

<<Template:OSM Location map/testcases Test of dateline functionality

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<mapframe>: Attribute "mapstyle" has an invalid value 10 000km 6,000miles Vancouver 6 Manila 4 3 1 Manila	<mapframe>: Attribute "mapstyle" has an invalid value 10 000km 6,000miles Vancouver 6 Manila 4 3 1 Manila

Pacific centric map -180

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<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles -123° Vancouver d=0 <div style="display:inline-block; position: absolute; line-height: 0.98; background-color: transparent; color:inherit;"> San Fran' 6 3	<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles -123° Vancouver d=0 <div style="display:inline-block; position: absolute; line-height: 0.98; background-color: transparent; color:inherit;"> San Fran' 6 Sidney 5 4 3 120° Manila d=-1 1

Pacific centric map 180

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{{OSM Location map}}	{{OSM Location map/sandbox}}
<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles -123° Vancouver d=1 <div style="display:inline-block; position: absolute; line-height: 0.98; background-color: transparent; color:inherit;"> San Fran' 6 Sidney 5 4 3 120° Manila d=0 1	<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles -123° Vancouver d=1 <div style="display:inline-block; position: absolute; line-height: 0.98; background-color: transparent; color:inherit;"> San Fran' 6 Sidney 5 4 3 120° Manila d=0 1

Try with mark coords to confirm new logic not working for marks more complex than labels

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{{OSM Location map}}	{{OSM Location map/sandbox}}
<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles Vancouver 3	<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles Vancouver 6: Another area across date line 5. Sidney 4: area across date line 3 Manila

First draft at instructions

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{{OSM Location map}}

{{OSM Location map/sandbox}}

<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles Eastern Hemisphere         Western Hemisphere If map centre has a negative Longitude, positive-lon marks (such as this one at 0,130) would need to set dateline=-1. Longitude 100   120   140   160   180  -160  -140  -120  -100 If map centre has positive Longitude (as here), any negative-lon marks (such as this one at 0,-150) need to set dateline=1. Map centre (0,160)    Coping with marks both sides of the dateline (180th meridian): The line of longitude that is both plus and minus 180° can be seen as a feint blue line through the Pacific on this map. It divides the Eastern and Western hemispheres. The 'map centre' longitude selects which hemisphere is the main one for any mark coordinates. Any marks in that hemisphere need no further clarification. However, to show a mark in the 'other' hemisphere, use the 'dateline=' parameter, otherwise it will end up in the 'wrong' direction relative to your map centre. Set it to -1 for positive (western hemisphere) longitude marks and to 1 for negative (eastern hemisphere) longitude marks, if the map centre is in the 'other' hemisphere. nb. There is no such problem on the Prime meridian. Marks either side of 0° longitude work as expected without any need for dateline to be set.

<mapframe>: Attribute "mapstyle" has an invalid value 5000km 3,100miles Eastern Hemisphere         Western Hemisphere If map centre has a negative Longitude, positive-lon marks (such as this one at 0,130) would need to set dateline=-1. Longitude 100   120   140   160   180  -160  -140  -120  -100 If map centre has positive Longitude (as here), any negative-lon marks (such as this one at 0,-150) need to set dateline=1. Map centre (0,160)    Coping with marks both sides of the dateline (180th meridian): The line of longitude that is both plus and minus 180° can be seen as a feint blue line through the Pacific on this map. It divides the Eastern and Western hemispheres. The 'map centre' longitude selects which hemisphere is the main one for any mark coordinates. Any marks in that hemisphere need no further clarification. However, to show a mark in the 'other' hemisphere, use the 'dateline=' parameter, otherwise it will end up in the 'wrong' direction relative to your map centre. Set it to -1 for positive (western hemisphere) longitude marks and to 1 for negative (eastern hemisphere) longitude marks, if the map centre is in the 'other' hemisphere. nb. There is no such problem on the Prime meridian. Marks either side of 0° longitude work as expected without any need for dateline to be set.