Am 07.02.2014 13:18, schrieb magerlin:
Are anybody able to get the right results when doing this calculation in
field calculator on a shape file:
FromToStop = 100000 * From_stop + To_stop
<http://osgeo-org.1560.x6.nabble.com/file/n5102486/Attribute_table.png>
I know there is a limit on 10 digits working with integers but using
integers (the two first columns) or real (the two next columns) makes only
one difference:
Using real gives the right results as a start, but when the file is saved
and reopened the results are wrong (negative number from adding two positive
numbers!). I have also tested both integer and real for the result column
FromToSTop with no luck.
A test file is here: Test.zip
<http://osgeo-org.1560.x6.nabble.com/file/n5102486/Test.zip>
I suppose it is some kind of overflow but I get no error messages or
warnings at all.
-----
Regards Morten
Qgis 2.0.1 OSGeo,
Windows 7, 64bit
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Hello Morten,
for me your target-field "FromToStop" seems to be an integer-field.
Maybe it's the reasen?
Wolf
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