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<div class="moz-cite-prefix">Hi Denis<br>
<br>
>Regarding Marco’s use case, using the 50cm limit should be
equivalent in map units, no?<br>
<br>
The map units can be degrees and the layer units meters. Morover,
the distortion is not equal in x- and y- direction. So converting
the 50cm to degrees will be a different number depending where you
are on the map and in which direction. The same holds for
conversions between meter systems (e.g. google mercator <->
swiss grid). So the only more or less accurate thing is to use
layer units.<br>
<br>
Regards,<br>
Marco<br>
<br>
On 14.12.2014 14:20, Rouzaud Denis wrote:<br>
</div>
<blockquote
cite="mid:B06F52D2-A643-4BDA-8F3B-51EEEB6DF80B@gmail.com"
type="cite">
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Hi,
<div class=""><br class="">
</div>
<div class="">I would say +1 for map units.</div>
<div class=""><br class="">
</div>
<div class="">Regarding Marco’s use case, using the 50cm limit
should be equivalent in map units, no?</div>
<div class=""><br class="">
</div>
<div class="">From my point of view, the settings of snapping are
far too advanced for 95% of the usage. Let’s not make them even
more complicated, just for a very specific use case.</div>
<div class=""><br class="">
</div>
<div class="">My 2 ct.</div>
<div class=""><br class="">
</div>
<div class="">Denis</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 13 Dec 2014, at 07:02, Martin Dobias <<a
moz-do-not-send="true" href="mailto:wonder.sk@gmail.com"
class="">wonder.sk@gmail.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div dir="ltr" class="">Hi
<div class=""><br class="">
</div>
<div class="">Recently I have been working on some
snapping improvements (more about that later) and I
have found one slightly surprising thing about the
configuration of tolerances: if the tolerance unit is
set to "map units", it actually means "layer units" -
i.e. units in layer's CRS and not in project's CRS.
Recently there was even a bug report filed for that: <a
moz-do-not-send="true"
href="https://hub.qgis.org/issues/11634" class="">https://hub.qgis.org/issues/11634</a></div>
<div class=""><br class="">
</div>
<div class="">I would like to change the behavior so
that the "map units" in snapping config dialog would
mean units in project's CRS. Would there be any
objections?</div>
<div class=""><br class="">
</div>
<div class="">Alternatively we could just rename "map
units" to "layer units" to make it less surprising
(and eventually add a third option to use project's
units).</div>
<div class=""><br class="">
</div>
<div class="">Cheers</div>
<div class="">Martin</div>
<div class=""><br class="">
</div>
</div>
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class="">
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</blockquote>
</div>
<br class="">
</div>
<br>
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</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
<a class="moz-txt-link-abbreviated" href="mailto:marco.hugentobler@sourcepole.ch">marco.hugentobler@sourcepole.ch</a> <a class="moz-txt-link-freetext" href="http://www.sourcepole.ch">http://www.sourcepole.ch</a>
Technical Advisor QGIS Project Steering Committee </pre>
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