<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><font size="3" id="yui_3_16_0_ym19_1_1463269278584_7129"><span id="yui_3_16_0_ym19_1_1463269278584_6269">Hi </span><span style="font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_5500">Janneke, you are right. The simplification process is executed just when the original geometry is read from data source and it can create invalid geometries. These invalid geometries will be used in subsequent processes using geometry calculations.</span></font></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;"><font size="3"><br></font></span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_6220"><font size="3" id="yui_3_16_0_ym19_1_1463269278584_7135">You can disable the simplification of a layer from its options menu -> properties -> rendering -> uncheck the "simplify geometry" CheckBox. </font></span><span style="font-size: medium; font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_7221">Or you can disable the simplification by default from -> settings -> options -> rendering -> uncheck the "Enable feature simplification by default ..." CheckBox.</span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;"><font size="3"><br></font></span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_6729"><font size="3" id="yui_3_16_0_ym19_1_1463269278584_7136">This pull request moves the simplification just when the geometry is rendered, the geometry remains unchanged from the data source in order to avoid these problems. </font></span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;"><font size="3"><br></font></span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_6221"><font size="3">Kind regards</font></span></div><div id="yui_3_16_0_ym19_1_1463269278584_5497" dir="ltr"><span style="font-family: Arial;" id="yui_3_16_0_ym19_1_1463269278584_7051"><font size="3" id="yui_3_16_0_ym19_1_1463269278584_7132">Alvaro</font></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1463269278584_5496"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1463269278584_5451" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1463269278584_5450"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1463269278584_5449"> <div dir="ltr" id="yui_3_16_0_ym19_1_1463269278584_5448"> <font size="2" face="Arial" id="yui_3_16_0_ym19_1_1463269278584_5447"> <hr size="1" id="yui_3_16_0_ym19_1_1463269278584_5446"> <b id="yui_3_16_0_ym19_1_1463269278584_5482"><span style="font-weight:bold;" id="yui_3_16_0_ym19_1_1463269278584_5481">De:</span></b> Janneke van Dijk <janneke.qgis@gmail.com><br> <b id="yui_3_16_0_ym19_1_1463269278584_5480"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1463269278584_5479">Para:</span></b> A Huarte <ahuarte47@yahoo.es>; "qgis-developer@lists.osgeo.org" <qgis-developer@lists.osgeo.org> <br> <b><span style="font-weight: bold;">Enviado:</span></b> Sábado 14 de Mayo de 2016 20:30<br> <b><span style="font-weight: bold;">Asunto:</span></b> Re: [Qgis-developer] GEOS error Exception: IllegalArgumentException: Invalid number of points in LinearRing found 3 - must be 0 or >= 4<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1463269278584_5454"><br><div id="yiv7691646922"><div id="yui_3_16_0_ym19_1_1463269278584_5453">
<div class="yiv7691646922moz-cite-prefix" id="yui_3_16_0_ym19_1_1463269278584_5452">Hi Alvaro,<br clear="none">
<br clear="none">
How do I disable the on-the-fly simplification?<br clear="none">
Do I understand it correctly that the error causes problems with a
virtual field with a geometry calculation in it? Would that also
be solved by disabling on-the-fly simplification? Or should I
avoid the issues by not making it a virtual field - if I know that
the polygons won't be edited? <br clear="none">
<br clear="none">
Thanks for your insights,<br clear="none">
Janneke<br clear="none">
<br clear="none">
On 13/05/2016 11:08, A Huarte wrote:<br clear="none">
</div>
<blockquote type="cite">
</blockquote></div><div class="yiv7691646922yqt6259149778" id="yiv7691646922yqt90602"><div id="yui_3_16_0_ym19_1_1463269278584_5502"><div id="yui_3_16_0_ym19_1_1463269278584_5501">
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14010"><span id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14070">Hi, I think this
pull </span><a rel="nofollow" shape="rect" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14012" target="_blank" href="https://github.com/qgis/QGIS/pull/2900">https://github.com/qgis/QGIS/pull/2900</a> fixes
the error.</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14010"><br clear="none">
</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14305">But it
is pending to merge, It needs to fix some tests to be accepted
finally.</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14306">Meanwhile
you can disable the on-the-fly simplification of the layer.</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14306"><br clear="none">
</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14306">Kind
regards</div>
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14306">Alvaro</div>
<div class="yiv7691646922qtdSeparateBR" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14011"><br clear="none">
</div>
<div class="yiv7691646922yahoo_quoted" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14350" style="display: block;">
<div id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14349">
<div id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14348">
<div dir="ltr" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14347">
<hr id="yui_3_16_0_ym19_1_1463269278584_6637"> <b><span>De:</span></b> Janneke van Dijk <a rel="nofollow" shape="rect" class="yiv7691646922moz-txt-link-rfc2396E" ymailto="mailto:janneke.qgis@gmail.com" target="_blank" href="mailto:janneke.qgis@gmail.com"></a><a rel="nofollow" shape="rect" class="yiv7691646922moz-txt-link-rfc2396E" ymailto="mailto:janneke.qgis@gmail.com" target="_blank" href="mailto:janneke.qgis@gmail.com" id="yui_3_16_0_ym19_1_1463269278584_6638"><janneke.qgis@gmail.com></a><br clear="none">
<b><span>Para:</span></b> <a rel="nofollow" shape="rect" class="yiv7691646922moz-txt-link-abbreviated" ymailto="mailto:qgis-developer@lists.osgeo.org" target="_blank" href="mailto:qgis-developer@lists.osgeo.org"></a><a rel="nofollow" shape="rect" class="yiv7691646922moz-txt-link-abbreviated" ymailto="mailto:qgis-developer@lists.osgeo.org" target="_blank" href="mailto:qgis-developer@lists.osgeo.org" id="yui_3_16_0_ym19_1_1463269278584_6639">qgis-developer@lists.osgeo.org</a>
<br clear="none">
<b id="yui_3_16_0_ym19_1_1463269278584_6643"><span id="yui_3_16_0_ym19_1_1463269278584_6642">Enviado:</span></b> Viernes 13 de Mayo de 2016
9:53<br clear="none">
<b><span>Asunto:</span></b> [Qgis-developer] GEOS error
Exception: IllegalArgumentException: Invalid number of
points in LinearRing found 3 - must be 0 or >= 4<br clear="none">
</div>
<div class="yiv7691646922y_msg_container" id="yiv7691646922yui_3_16_0_ym19_1_1463119430554_14352"><br clear="none">
Dear list,<br clear="none">
<br clear="none">
Using QGIS 2.14.2 on Windows 7 I get the following error
message when <br clear="none">
zooming out on a shapefile layer that has labels
switched on:<br clear="none">
<br clear="none">
GEOS<br clear="none">
Exception: IllegalArgumentException: Invalid number of
points in <br clear="none">
LinearRing found 3 - must be 0 or >= 4<br clear="none">
<br clear="none">
It seems to be an old bug (<a rel="nofollow" shape="rect" target="_blank" href="https://hub.qgis.org/issues/9375">https://hub.qgis.org/issues/9375</a>)
that was <br clear="none">
fixed 2 years ago.<br clear="none">
<br clear="none">
It doesn't seem to cause any problems otherwise. Anyone
else have this <br clear="none">
issue? Should I file a new bug report?<br clear="none">
<br clear="none">
Regards,<br clear="none">
Janneke<br clear="none">
<br clear="none">
_______________________________________________<br clear="none">
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