For my use cases, yes.
-Jukka-
________________________________
Landon Blake wrote:
So it sounds like adjacency will be important too? In other words...we don't
want to merge features that aren't adjacent or topologically connected?
Landon
On Wed, Sep 10, 2014 at 1:43 PM, Landon Blake
<sunburned.surve...@gmail.com<mailto:sunburned.surve...@gmail.com>> wrote:
Interesting use case Jukka. Let me think about how this might work as a plug-in.
Landon
On Sun, Sep 7, 2014 at 1:47 PM, Rahkonen Jukka (Tike)
<jukka.rahko...@mmmtike.fi<mailto:jukka.rahko...@mmmtike.fi>> wrote:
Hi Landon,
My case last week was about parcel IDs and landuse codes and aim was to union
areas so that polygons with same landuse and belonging to same owner would make
one polygon.
For another use see attached images and source data in Jump JML format. Data
could present two highways with ref. IDs "100" and "200". Both highways have
sections with speed limits "60" and "80". Aim is to merge segment of highway
"100" with speed limit "80" together etc.
Image one: Original segmented data
Image two: Desired end result. Notice an extra: Highway "100" has speed limit
"60" in two distinct places. I do not want them to be combined into
multilinestring. OJ can handle this case with two subsequent operations: Merge
selected features + Explode selected features.
-Jukka Rahkonen-
________________________________
Lähettäjä: Landon Blake
[sunburned.surve...@gmail.com<mailto:sunburned.surve...@gmail.com>]
Lähetetty: 7. syyskuuta 2014 22:10
Vastaanottaja: OpenJump develop and use
Aihe: Re: [JPP-Devel] Union/dissolve by several attributes
Jukka:
Can you give me some more details on the actual union you are trying to
accomplish? What do you integer attributes represent?
Thanks.
Landon
On Wed, Sep 3, 2014 at 4:21 AM, Rahkonen Jukka (Tike)
<jukka.rahko...@mmmtike.fi<mailto:jukka.rahko...@mmmtike.fi>> wrote:
Hi,
I would like to union features by two or perhaps more attributes. I wonder if
the current Union/Dissolve/Merge tool could be developed to support the use of
combined classes. In my use case I have two integer attributes which define the
classes and it is a bit tricky to calculate a new concatenated field from
those. Perhaps it is possible to do with the Beanshell Attribute Calculator but
it is not obvious for me how. An example: I have two integer attributes and I
would like to concatenate their values to one field which I would like to use
for merging later. If the attribute values are A=80 and B=20, how could I
conbine them into "80-20" or something like that? Well, in this case I could do
(100xA)+B=8020 but what to do if I had also strings to concatenate as A=80 and
B=true? I can do the task fine with Spatialite but it would be a bit more
fluent to do everything with OpenJUMP.
-Jukka Rahkonen-
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