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<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>Hi
all,</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012><FONT
face=Tahoma><SPAN class=518043109-26062012><FONT
size=2></FONT></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>I 've
created an Intersection layer with two shapefile layers
(polygons).</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>I
now want to update the new database (DBF) and feed 4 new
fields, say IN_AREA, IN_PERIM, IN_X and IN_Y :</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012></SPAN></FONT><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012>1) I wish I could specify the units. How could
I?</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>2) The
length button (Operators / 1.7.3) remains greyed-out though $perimeter as Field
calculator expression seems to work.</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>3) $x and
$y return NULL's : how do I extract X's and Y's of centroïds and feed IN_X and
IN_Y?</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012></SPAN></FONT> </DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012></SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>Using <FONT
face=Tahoma>1.7.3 and <SPAN class=518043109-26062012><FONT size=2>1.8 on Windows
7x64.</FONT></SPAN></FONT></SPAN></FONT></DIV></SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN class=518043109-26062012>Thanks in
advance for your help.</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012></SPAN></FONT> </DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012>Regards.</SPAN></FONT></DIV>
<DIV><FONT size=2 face="Trebuchet MS"><SPAN
class=518043109-26062012></SPAN></FONT> </DIV>
<DIV align=left><FONT size=2 face=Tahoma>Philippe de FRANCLIEU</FONT></DIV>
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