<p dir="ltr">You probably have an official local coordinate system in sweden. Project (save as..) your data into one of this systems. Those systems have normally less distortions and probably will represent polygon as a square again (or at least near one)</p>
<p dir="ltr">Alexandre Neto</p>
<div class="gmail_quote">Em 27/06/2015 18:17, "Nicolas Cadieux" <<a href="mailto:nicolas.cadieux@archeotec.ca">nicolas.cadieux@archeotec.ca</a>> escreveu:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hi,</p>
<p dir="ltr">If you select a scr from a geographic coordinate sys (like wgs84) too a projected sys like utm, you should have the square back. You will need to figure in what zone you are.</p>
<p dir="ltr">Nicolas Cadieux M.Sc.<br>
Les Entreprises Archéotec inc. <br>
8548, rue Saint-Denis Montréal H2P 2H2<br>
Téléphone: <a href="tel:514.381.5112" value="+15143815112" target="_blank">514.381.5112</a> Fax: <a href="tel:514.381.4995" value="+15143814995" target="_blank">514.381.4995</a><br>
<a href="http://www.archeotec.ca" target="_blank">www.archeotec.ca</a></p>
<div class="gmail_quote">On Jun 27, 2015 12:27 PM, "Christer Andersson [via OSGeo.org] " <<a href="http:///user/SendEmail.jtp?type=node&node=5213237&i=0" rel="nofollow" link="external" target="_blank">[hidden email]</a>> wrote:<br type="attribution"><blockquote style="border-left:2px solid #cccccc;padding:0 1em">
<div dir="ltr"><p>Hi,</p>
<p>How to
solve this problem? </p>
<p>1. I
measure a square on the ground.</p>
<p>2. I take
latitude and longitude of all four corners with a precision-GPS.</p>
<p>3. I have
succeded in making a map where the four corners are marked and the coordinates
are along the sides of the A4-paper.</p>
<p>4. The
problem is that the square has been transformed to a rectangle because of the
latitude shortening.</p>
<p>Is there a
solution to multiplay only the longitude by 1/cos(latitude) to get back the square?</p>
<p>(I
understand that 1/cos(latitude) is only valid for a sphere (not spheroid) but I do not know a
better formula. The latitude is 60 deg.)</p>
<p>Regards</p>
<p>Christer</p>
<p>Sweden</p> </div>
<br>_______________________________________________
<br>Qgis-user mailing list
<br><a href="/user/SendEmail.jtp?type=node&node=5213234&i=0">[hidden email]
<br><a href="http://lists.osgeo.org/mailman/listinfo/qgis-user" rel="nofollow" link="external" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-user</a>
<br>
<br>
<hr noshade size="1">
<div style="color:#444;font:12px 'tahoma','geneva','helvetica','arial',sans-serif">
<div style="font-weight:bold">If you reply to this email, your message will be added to the discussion below:</div>
<a href="http://osgeo-org.1560.x6.nabble.com/meter-scale-tp5213234.html" rel="nofollow" link="external" target="_blank">http://osgeo-org.1560.x6.nabble.com/meter-scale-tp5213234.html</a>
</div>
<div style="color:#666;font:11px 'tahoma','geneva','helvetica','arial',sans-serif;margin-top:0.4em;line-height:1.5em">
To start a new topic under Quantum GIS - User, email <a href="mailto:ml-node%2Bs1560n4125267h38@n6.nabble.com" target="_blank">ml-node+s1560n4125267h38@n6.nabble.com</a> <br>
To unsubscribe from Quantum GIS - User, <a href="<a href="http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node&%2361;4125267&code&%2361;bmljb2xhcy5jYWRpZXV4QGFyY2hlb3RlYy5jYXw0MTI1MjY3fDYzNDQ4MjQxNg&%2361;&%2361" target="_blank">http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4125267&code=bmljb2xhcy5jYWRpZXV4QGFyY2hlb3RlYy5jYXw0MTI1MjY3fDYzNDQ4MjQxNg==</a>;">click here.<br>
<a href="<a href="http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id&%2361;instant_html%21nabble%3Aemail.naml&base&%2361;nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs&%2361;notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml" target="_blank">http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml</a>" style="font:9px serif">NAML
</div></blockquote></div>
<br><hr align="left" width="300">
View this message in context: <a href="http://osgeo-org.1560.x6.nabble.com/meter-scale-tp5213234p5213237.html" target="_blank">Re: meter-scale</a><br>
Sent from the <a href="http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html" target="_blank">Quantum GIS - User mailing list archive</a> at Nabble.com.<br><br>_______________________________________________<br>
Qgis-user mailing list<br>
<a href="mailto:Qgis-user@lists.osgeo.org">Qgis-user@lists.osgeo.org</a><br>
<a href="http://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-user</a><br></blockquote></div>