[OpenStreetMap] #5018: what are the coordinates of a generated .PNG map

[OpenStreetMap]

#5018: what are the coordinates of a generated .PNG map
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  Reporter:  james_7114737  |      Owner:  rails-dev@…
      Type:  defect         |     Status:  new
  Priority:  minor          |  Milestone:
 Component:  website        |    Version:
Resolution:                 |   Keywords:  static map image coordinates
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Comment (by james_7114737):

 Greetings,

 The users of my app would be using the OpenStreetMap web interface above
 on their computer and then copying any generated static map image data to
 their mobile devices manually. The reason that my app is using static maps
 is for use in regions that do not have access to mobile data - i.e. no
 cell phone service...

 Presuming the underlying tile data is conveniently gridded: to ease
 computing resources, would an option would be to grow the requested map a
 bit to exactly match the underlying tile edges so that the coordinates are
 a more straightforward lookup? i.e. use 100% of all required tiles for the
 smaller requested area? I am typing in ignorance on this suggestion, but
 it is something I would check for if I was coding this as a quick and easy
 solution...

 CU,[[BR]]
 james

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Ticket URL: <https://trac.openstreetmap.org/ticket/5018#comment:5>
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