First of all, Veusz is an awesome plotting package, it's a great
environment to work in and is very intuitive to use. I am also very
impressed by how fast the package is evolving to meet the varied needs of
the users.
More to the point, I am having an issue using "Filter: Expression" with
Date type Data. The Filter: Expression tool works great with numerical
data, but it appears to be unable to perform Boolean operations with Date
type data.
With Date type data the Boolean expression appears to evaluate, but
generates zero length data sets for the result data.
Example:
Dataset: `Fail Date', Size: 500, Type: Date
Input Dataset: `Fail Date'
Filter Expression: `Fail Date` > 0 Also tried `Fail Date` <
0, `Fail Date` > 2008-09-01T00:00:00, etc... Some of the operations will
generate errors.
Output Dataset: Test_Data
Dataset: Test_Data, Size: 0, Type: FilterExpression
I am utterly stumped...
Can you provide an example of doing a Boolean operation with a Date Type
array using the Filter Expression Data Operation?
Thanks!!!!
Jay
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