IMAGINE Discussions

[Jens]

Hi,

How do I query an attribute table of a feature, for example:

Select row's of table where "Value >= 1 and Value < 10"

And then update the selected rows "Class" column in the attribute table with text:

"Class 1"

Please help!

[mvardovs]

Hello Jens,

You can get some ideas from this model:

Here I am adding a new Category column, where value 1 will have polygons with MEAN less-then-or-equal-to 0.4 and value 2 will have polygons with MEAN more-then 0.4. 

The operators above for getting 2D CRS are needed to make the output shapefile editable. You can find the description here.

Hope this will help.

Kind Regards,

Marina Vardovska
Post-Sales Engineer Remote Sensing

Hexagon Geospatial Division

attr_category.zip ‏3 KB

[mvardovs]

If you want to set the range of values from... to..., so you can use Equal operator, like below:

Regards,

Marina

[Jens]

Thank you, I will give this a try!

[Jens]

Another quick question. 

Can the Either/Or operators return a string "Bare" instead of a Value "1" and add that as the class? Or would you suggest another part that changes the values in the table to strings...and if so, how would this be done?

Thanks!

[mvardovs]

Jens,

Either/Or can return the table of strings. This can be done as you see below:

Just make sure that True/Otherwise ports of Either/Or operator consist strings, so there will be no conflict in output table format.

Regards,

Marina