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Re: [udig-users] Table Join and Area calcuate Extension?
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On Fri, Jul 16, 2010 at 2:15 PM, Yi Lik Tsang <yilik04@xxxxxxxxxxxx> wrote:
> Hi,
>
> I have recently started trialling uDig as an alternative Desktop GIS, and it
> seem like a solid and promising product.
>
> But as part of my evaluation, I have come to the conclusion that it is not
> possible to import an external table (e.g. csv, xls, dbf) into uDig, and
> then joining the table to a layer via a common field. Can anybody confirm
> that this is indeed the case, and if so, is there extensions out there that
> can do this kind of things?
The facility has recently been added to the library we use (ie
GeoTools) but we have not had the chance/funding to add it to the
application. If you are interested the module is called app-schema
(and is used to gather information into an expected standard output
structure).
An earlier workaround I have personally used is to make a "join"
function that does the "match" and then use the uDig ReShape operation
to perform the join. I did not really consider this a general purpose
solution however.
> Also, can anybody also tell me that if there are extensions out there that
> can auto update the Area and length of a feature?
The ReShapeOperation can calcualte the area / length etc .. see
walk-through 2 for the example. However it is not done automatically.
Jody
