<div dir="ltr">Hi Tom, dear friends,<div><br><div><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I'm not really sure what you mean by geographical scale?</blockquote><div><br></div><div>It would be helpful to have text like this:</div><div><br></div><div>"This image is 90.7 dpi, or 28 dots per cm. </div><div>If printed at this dpi, the scale will be 1cm to 25,000 cm."</div><div><br></div><div><div>Particularly if the formula is complicated, then it would be helpful to retrieve this information from the libraries.</div></div><div><br></div><div>The online map has a scale bar super-imposed - how is that produced? Maybe the relevant information could also be read as part of that.<br></div><div><br></div><div>Regarding the missing DPI information in the png: It would be great to add it. But with the above statement, at least the user is warned, esp. if that led to a wiki page with additional information. So not too bothered about getting it all right or make it all explicit, but it would be really helpful to provide a link so users don't have to hunt around (as I did, and I do a lot of work with OSM...).</div><div><br></div><div>Many thanks!</div><div>Bjoern</div></div><br></div></div></div></div>