The first version of Buffer "distance from attribute value" should be available in the nightly build. Please let me know if there are problems or suggestions. Currently it doesn't support the buffer selection or union options.
As a first step toward the proposed formula option, an option with *, /, +, - could be added that uses the distance entry. Larry On Thu, Jun 12, 2008 at 11:24 AM, Larry Becker <[EMAIL PROTECTED]> wrote: > I haven't forgotten about modifying Buffer to use an attribute. I'm > working on it at home when I find time. The formula thing is secondary to > getting the feature working. > > Larry > > > On Fri, Jun 6, 2008 at 1:43 PM, Larry Becker <[EMAIL PROTECTED]> > wrote: > >> When OJ moves to Java 1.6 (as SkyJUMP has) we could use the scripting API. >> See: >> http://java.sun.com/developer/technicalArticles/J2SE/Desktop/scripting/ >> >> Until then, however, it would probably involve parsing and executing, or a >> simple interface like Attribute Calculator or Simple Query. >> >> Larry >> >> >> On Fri, Jun 6, 2008 at 12:26 PM, Stefan Steiniger <[EMAIL PROTECTED]> >> wrote: >> >>> >>> >>> Martin Davis schrieb: >>> >>>> I was thinking that the easiest thing to do would be to set the buffer >>>> distance based on a single attribute value. Your idea of using a formula >>>> is >>>> even better. This seems like it would require defining a formula in some >>>> language, and being able to parse and execute it. Has anyone done anything >>>> like this before? (Apart from Beanshell - which is a different thing). >>>> >>> yes and no. >>> >>> Pirol has created a Attribute calculator that I moved over to Ojump. >>> see under /Tools/Edit Attributes/Attribute Calculator >>> >>> I am not sure how flexible that tool is (currently it does also only >>> basic math: + - * /). >>> >>> >>> >>>> Side comment: when I get JEQL bolted in to JUMP this kind of thing will >>>> be come very easy... soon, hopefully. >>>> >>>> Larry Becker wrote: >>>> >>>>> I agree that creating buffers based on the value of an attribute would >>>>> be useful. At my company, we do some buffer analysis that might benefit >>>>> from this capability. I might be able to justify the time to extend OJ's >>>>> buffer tool (which is currently in sync with SkyJUMP). >>>>> >>>>> Based on Ravi's past requirements for features that support "mineral >>>>> prognostication" (I love that term), his definition of buffers might be >>>>> more >>>>> complex than mine. :-) For our use, however, I can imagine needing the >>>>> capability to compute the buffer distance based on a formula entered by >>>>> the >>>>> user. >>>>> >>>>> regards, >>>>> Larry >>>>> >>>>> On Fri, Jun 6, 2008 at 10:50 AM, Martin Davis <[EMAIL PROTECTED]<mailto: >>>>> [EMAIL PROTECTED]>> wrote: >>>>> >>>>> Seems like a nice addition to the Buffer tool. Should be simple >>>>> to add.... >>>>> >>>>> RAVI KUMAR wrote: >>>>> >>>>> Hi all, >>>>> in an exercise for Mineral prognostication now am able to >>>>> achieve most after the 'Polygon Union Intersection' is added >>>>> and am very thankful for the same. >>>>> >>>>> However on linear features (Dykes in Geology) which are >>>>> supposed to receiving buffering as per another attribute, find >>>>> the going repititive. Buffering has to be done depending on an >>>>> attribute value of the same table. But am forced to split the >>>>> data into as many classes of the attribute for buffering them >>>>> and then add all of them (replicate selected features) into a >>>>> layer again. >>>>> >>>>> This can be solved if, Buffering can be done with an attribute >>>>> value than a constant we are asked to provide. >>>>> >>>>> Cheers >>>>> Ravi Kumar >>>>> >>>>> >>>>> ------------------------------------------------------------------------ >>>>> >>>>> _______________________________________________ >>>>> jump-users mailing list >>>>> [email protected] >>>>> <mailto:[email protected]> >>>>> http://lists.refractions.net/mailman/listinfo/jump-users >>>>> >>>>> -- Martin Davis >>>>> Senior Technical Architect >>>>> Refractions Research, Inc. >>>>> (250) 383-3022 >>>>> >>>>> _______________________________________________ >>>>> jump-users mailing list >>>>> [email protected] >>>>> <mailto:[email protected]> >>>>> http://lists.refractions.net/mailman/listinfo/jump-users >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> http://amusingprogrammer.blogspot.com/ >>>>> >>>>> ------------------------------------------------------------------------ >>>>> >>>>> _______________________________________________ >>>>> jump-users mailing list >>>>> [email protected] >>>>> http://lists.refractions.net/mailman/listinfo/jump-users >>>>> >>>>> >>>> >>>> _______________________________________________ >>> jump-users mailing list >>> [email protected] >>> http://lists.refractions.net/mailman/listinfo/jump-users >>> >> >> >> >> -- >> http://amusingprogrammer.blogspot.com/ > > > > > -- > http://amusingprogrammer.blogspot.com/ -- http://amusingprogrammer.blogspot.com/
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