Hei Michael, a long answer
I) Minority/Majority/Median: they are only applicable to integer or string values - end return the value that occurs the most = majority, or the least = minority* (i.e. by counting the occurence). The median is the value right in the middle if we build an ordered set of all values (makes sense for integer values, less sense for double). *) mmhm.. I should check what I actually do when there are several values that are only 1 times in II) "query" message I think it is best to schedule it for a new release... so no need to hury III) "do you think that i) count features with non null values, ii) concatenate all values, iii) concatenate distinct values - would be clearer for aggregation function names" not sure what you refer to by "function names"... ??? IV) Lecture available Unfortunately not - I have all the material but it is build for a complete course, i.e. 13x 1.5h hours. So definitively not working for a 2-3h tutorial V) giving a tutorial well.. It would require quite some time to prepare the stuff. However, I/we should look into Ravis Mock-Excersise. Which he is using for Geologist training. Maybe that would be an option? I am actually still pondering if I submit something. For instance: a) an article or abstract on OpenJUMP (an evaluation) ... Btw. do you know what actually the "Show Case" category means? Would fit a general presentation on OpenJUMP into that? b) or: an abstract for a talk on landscape pattern detection using buffer ops instead of raster morphology (but ... this is just an idea, and I am not sure if it makes sense. Because in the end I need to compare buffer and raster ops - which is not sooo easy) c) or: an abstract for a talk on "analysing the requirements to obtain geographical data from image segmentation objects" ... the latter two I was thinking about, since I hope we can push the conference a bit towards science, i.e. away from FOSS4G which is a mixture of business and science. But the problem is - for all talks I need time to prepare and I rarely have any research done on this (well on the latter I already have a presentation - but I should show some nice things). Nacho plans actually to submit his evaluation of JUMP forking. He wrote about this last year for a meeting, but it is all in spannish... so I don't really know by now what his conclusions are. stefan Michaël Michaud schrieb: > Stefan Steiniger a écrit : >> Hei Michael and others, >> >> I had a look on your aggregation plugin. It is a bit more advanced than >> my one. If we would add Minority/Majority/Median and try to get the >> "query" message fixed so that it doesn't exceed the box, > Hey, I did not notice that. I'll have a look to see if it can be fixed > easily. > I understand median, but I'm not sure what minority and majority means. > Should we authorize some of these functions for strings ? >> then I think we >> rather should use your plugin. Or we add both, calling my plugin "Simple >> Attribute Aggregation..." and your "Advanced Attribute Aggregation...". >> Of course some of the options need to be explained a bit (i.e. what is >> Count(non-null) and what is Concatenate-All and Concatenate-Distinct). >> > I think we should try to keep only one plugin, except if the one with > more capabilities is much more difficult to use. > It seems that my aggregation plugin needs some enhancements to be really > user-friendly (usable without the need of a user-guide). > One of my ideas was to build a dynamic illustration of the result based > on micro generic dataset (but it would need some more work...) > Any idea is welcome to improve use experience > Do you think that > - count features with non null values > - concatenate all values > - concatenate distinct values > would be clearer for aggregation function names ? (a bit long, but long > is better than not understandable) >> However, I have been looking for the source code and it is not included >> in the downloadable jar. >> > Peppe answered for me, thanks Peppe >> What is your opinion shall we integrate it or not? If yes - do you think >> we should add that for 1.3 or into a future 1.3.X / 1.4 release? >> > I think there is no hurry. > I'll have a look next week end to see how much work it would need to > improve it. > If we are not fully satisfied, we can let it as a plugin and wait for a > future release. >> cheers from Calgary >> stefan >> >> PS: I did a bit of experimenting with Sextante (the current version that >> works only with the Pirol Image lib). I used Sextante to vectorize a >> binary raster to obtain polygons. After applying on the resulting >> vectors OJ's Planar Graph function I got a pretty nice polygon cover. :) >> I now need to check if one could do with OJ the complete lecture we did >> in Zurich with ArcGIS. >> > Would be great (is this lecture available ?) > Erwan asked me if we considered preparing a lab on OpenJUMP for OGRS > spatial 2009. What do you think ? > > Michaël ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
