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Hi Germán,<br><br>
maybe I discover why the system crash...<br><br>
my plugin have a form that work on the active layer.<br>
On the OK button these operations will be done:
<ul>
<li>get the properties of the active layer that is based on a pg view
(like sql, name, ...)
<li>remove the layer from QGis using the removeMapLayer function
<li>perform some filter on the data
<li>create a new view based on the filter
<li>load a layer based on the view using addMapLayer function
</ul>This last command, addMapLayer, togheter with second one
removeMapLayer, create a crash!<br><br>
I solve the problem in this way: instead of remove the layer, I replace
my view with the new sql but with the same name. <br>
To view the new result it is easy to refresh the MapCanvas.<br><br>
Michele.<br><br>
At 18.21 08/10/2009, Germán Carrillo wrote:<br>
<blockquote type=cite class=cite cite="">Hi Michele.<br><br>
I guess you must update the canvas layer set after remove a layer from
QgsMapLayerRegistry.<br><br>
<br>
Germán Carrillo<br><br>
<br>
2009/10/8 Michele Mammini
<<a href="mailto:mamminim@yahoo.it">mamminim@yahoo.it</a>><br>
<dl>
<dd>Like in the subject I solved a part of my problem.<br><br>
<dd>The correct code to remove the layer from QGis is:<br>
<dd><font face="Courier New, Courier">
currentLayer = self</i>.iface.activeLayer()<br>
<dd> RegIns = QgsMapLayerRegistry.instance()<br>
<dd>
RegIns.removeMapLayer(currentLayer.getLayerID())<br><br>
</font>
<dd>but it working if i use it in Python Console, while QGis crash if I
use it in my plugin code<br><br>
<br><br>
<br>
<dd>Dear All,<br><br>
<dd>i have a problem with QgsMapLayerRegistry class when i try to remove
a Layer from QGis.<br><br>
<dd>i use this two code line:<br>
<dd><font face="Courier New, Courier"> RegIns =
QgsMapLayerRegistry.instance()<br>
<dd> RegIns.removeMapLayer(layerName)<br><br>
</font>
<dd>where layerName is set with this command line:
<font face="Courier New, Courier">layerName =
self</i>.iface.activeLayer().name()<br><br>
</font>
<dd>Do someone know how to solve it?<br><br>
<dd>Thank you Michele.<br><br>
<dd>_______________________________________________<br>
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<dd>
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</dl>-- <br>
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