[Qgis-developer] QgsComposerMap zoomToExtent problem

[James Stott]

Hi,

I have a QgsComposerMap that I want to zoom to the extent of a feature in a
vector layer.

geomBBRect = geometry.boundingBox()
myComposerMap.zoomToExtent(geomBBRect)

I am trying to use zoomToExtent to make the map show the correct area.
However, I get a blank map when I run my code. If I check what the current
scale is, its returned as 'nan'.

I tried using setNewExtent() before, but this alters the size of my
QgsComposerMap. I want to keep the same map size each time.

After doing a little bit of checking, it seems that:

myComposerMap.currentMapExtent().xMinimum()))
myComposerMap.currentMapExtent().xMaximum()))

both return 'nan' but yMinimum and yMaximum return coordinates.

I can not figure out why. Can anyone help shed any light on the problem? I
can provide more code if needed.

James
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