User:J. Johnson/Sandbox3

{{Infobox landform}}; {{Location map}}; {{OSM Location map}}

As of early 2019: OSM overlays fail to properly overlay for mobile devices. See how this page is rendered for mobile devices via https://en.m.wikipedia.org/wiki/User:J._Johnson/Sandbox3 (note the "m."). Note that first image, invoked prior to the first section header, displays okay.

And we note that adding "{{Graph:Chart||type=pie||width=0||height=0||x=0||y=0}}" anywhere in the section/article seems to fix the problem. See WP:Village_pump_(technical)#Odd_blank_map_bug_with_OSM_location_template.

• As of 5 May: seems to be fixed. See User_talk:RobinLeicester#OSM_Location_Map_problem.

Apparently "An explicit width needs to be added on the graph img tag." See https://phabricator.wikimedia.org/T216431, and also https://phabricator.wikimedia.org/T216318.

50km
30miles

B24

B23

B22

B1

  

First marker test (above the section header)

small test

75km
50miles

VIII

VII

VI

C

B

A

Tangshan

Sea of Bohai

Qinglong

Zunhua

Changli

Ninghe

Qinhuangdao

Tianjin

Beijing

  

• • Zoom = 7 **

50km
30miles

B24

B23

B22

B1

  

Second marker test (below the section header)

Bigger test

Tangshan earthquake

45km
30miles

Sea of Bohai

Changli

Ninghe

Qinglong

Qinhuangdao

Zunhua

Tianjin

Beijing

Tangshan

  

• • Zoom = 8; too big. ** 2018-09-05: red: GTE, black: EHB, blue: ANSS

OSM overlay tests

500m
550yds

Leicester Castle

  

• Original: zoom = 14 *

200m
220yds

Leicester Castle

  

• Zoom = 15. Scale mismatch. Doubling the overlay size scales up, but thickens the lines. *

500m
550yds

Leicester Castle

  

• Base map centered at a different lat/lon, overlay at original location.*

More tests

100km
62miles

  

Pumpkin Vine Railroad The "Pumpkin_Vine_Railroad_route.svg" overlay seems to work (following a reasonable course from the Mississippi River to Louisville via Indianapolis) if it is cut-down to quarter size (150 px high) with the map centered on the NE corner of the overlay, and zoom = 6. (Though that doesn't seem right.) At quarter size the line is too narrow, hard to see. However, the line was only 25 miles long, so the image is still over-size.