On Wed, 07 Aug 2013, Bruce wrote: > I'm looking for good ideas again I'm afraid. > > > I have an array of objects that can be best described as a set of > categories with an associated value. Something along the lines of > [Cat1:String, Cat2:String, Cat3:String, Value:Float]. > > The general idea is that the user would select one of the categories and > then the project would calculate a set of statistics across that > category. For example the categories could be "Age", "Sex", "Height" > and the Value may be, say, weight. > > What I am trying to do is develop a generic module/class accepting the > input array that will return another array of objects being the > statistical analysis of the input array across the specified category. > The statics are fairly basic (at this stage) being the average for each > category, the sample standard deviation and the sample standard error. > > Generally the input array length is reasonably short, ~30 to ~300 items. > Also the category domains are demonstrably short, between 3 and ~10 > identities. > > I could (and have done) use the database (postgresql) statistics > functions and re-query the entire dataset given the user category > selection. However, the time to execute this is unacceptably slow (the > full dataset is over 3,000,000 rows). Furthermore, I would have to > devise a generic way to build the specific query required each time. > > Another way could be to develop an interface to r or something but I am > hesitant to embark on that path given my knowledge of stats libraries > like that. > > So, just looking for a "good idea". >
Sorry, I don't understand... You want to give a Variant[] to a class, like: Public Sub btnGiveStats_Click() Dim hStats As Stats hStats = Stats.Give(["Age", "Sex", "Height", fWeight]) End Right? What is this array supposed to signify? On what data shall it operate? I mean: is there a table of persons (with fields Age, Sex, Height, ...) and the funtion shall count ... something? Is the "weight" used to weigh the average figure? Thinking about it further, I admit that I don't understand anything... at all. :-) Regards, Tobi ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
