[mapserver-users] MapServer 6.4.1 OGR output error

[Eichner, Andreas - SID]

You can't use OGR output formats that way. Calling msPrepareImage() on them triggers a NULL pointer dereference (fixed in https://github.com/mapserver/mapserver/pull/5069). 

So using
	$image = $map->draw()
	$image_url = $image->saveWebImage()
is definitely the wrong way. The MapServer code hints to use msGMLWriteQuery() for that which seems to be exported as
	$map->savequeryasgml(string filename, string namespace)

Documentation is rare on that...

> Am I the only one having problems outputting OGR files ? Does anybody know
> what I could be doing wrong ?