similar to: visualisation of Self organising map

I am trying to understand how the SOM algorithm works using library(class) SOM function. I have a 1000*10 matrix and I want to be able to summarize the different types of 10-element vectors. In my real world case it is likely that most of the 1000 values are of one kind the rest of other (this is an oversimplification). Say for example: InputA<-matrix(cos(1:10),nrow=900,ncol=10,byrow=TRUE)

Has the algorithm used by batchSOM for hexagonal topology changed in some way between R 1.9.1 and 2.0.1? In comparing between the two versions, I get identical results for rectangular topology, but very different results for hexagonal topology. (I tried to find release notes for the VR bundle that might explain the changes, but was unable to locate these anywhere.) Here's the script I

somfunc<- function (file) { aa_som<-scale(file) final.som<-som(data=aa_som, rlen=10000, grid=somgrid(5,4, "hexagonal")) pdf(file="/home/cdu/changbin/file.pdf") #output graphic file. plot(final.som, main="Unsupervised SOM") dev.off() } I have many different files, if I want output pdf file with the same name as for each dataset I feed to the function

I just finished posting an article on creating a lightweight but very functional web grid that does a slick job of live updating whatever content you put in. Much like Rails itself, I pulled the code from an active project effort, in the hopes that others would find it useful. http://unspace.ca/discover/datagrid Or, for the impatient, give the demo a shot: http://unspace.ca/datagrid Feedback

Hi! I''m writing a datagrid plugin and would like to render the datagrid using a .rhtml template. However, I''d like to avoid placing this template in app/views/shared, but it should reside somewhere within vendor/plugins/datagrid/... Any ideas? -- Posted via http://www.ruby-forum.com/.

Dear R experts I am looking for a package which gives me latin hyper cube samples from the grid of values produced from the command "expand.grid". Any pointers to this issue might be very useful. Basically, I am doing the following: > a<-(1:10) > b<-(20:30) > dataGrid<-expand.grid(a,b) Now, is there a way to use this "dataGrid" in the package

Hi, I'm trying to utilize the kohonen package to build SOM's. However, trying this on my data I get the error: "Argument data should be numeric" when running the som(data.train, grid = somgrid(6, 6, "hexagonal")) function. As you see, there is a problem with the data type of data.train which is a list. When I try to convert it to "numeric" I get the error:

Hi All, I am still learning R, but making, IMO, great strides. I learned about Kohonen/Self-Organizing Maps in class and I would like to try to replicate some of the things we have seen in class. Below is my code. I am trying to create a u-matrix. In the documentation on page 9 it appears the type of plot, dist.neighbours should do the trick, however, I am getting an error: (Error in

I have a data set with 10 variables, and about 8000 instances (or objects/rows/samples). In addition I have one more ('class') variable that I have about 10 instances for, but for which I wish to impute values for. I am a little confused how to go about doing this, mostly as I'm not well-versed in it. Do I train the SOM with a data object that contains just the first 10 variables

All, The kohonen predict function is returning NA for SOM predictions regardless of data used... even the package example for a SOM using wine data is returning NA's Does anyone have a working example SOM. Also, what is the purpose of trainY, what would be the dependent data for an unsupervised SOM? As may be apparent to you by my questions, I am very new to kohonen maps and am very grateful

HI, Dear R community, I am using the following codes to do the som. I tried to label the notes by the majority vote. either through mapping or prediction. I attached my output, the left one dont have any labels in the note, the right one has more than one label in each note. I need to have only one label for each note either by majority vote or prediction. Can anyone give some suggestions or

I would really like some or any advice on how I can improve (or fix??) the following analysis. I hope I have provided a completely runnable code - it doesn't produce any errors for me. The resulting plot at the end shows a pretty poor correlation (just speaking visually here) to the test set. How can I improve the performance of the mapping and prediction? Here are some of the data

Hi! I''m thinking of implementing datagrid like functionality for showing data (models) in grids so that I don''t have to re-invent the view/controller for each table I need. There are number of parameters that need to be customizable: column titles, row style depending on the data (i.e. showing all rows with balance<0 in red), is column sortable, sort-algorithm etc. To

I would love to get some feedback and test a patch to rev. 4380. First, the money shot - check out this demo of a scriptaculous DataGrid: http://development.finetooth.com/?p=13 I''m using the <tr> as a sortable with the <th>''s as the sortable elements. The Patch file: http://www.commoner.com/~lsimon/scriptaculous/delay_and_ignorePosition_forSortables.diff The patch

In a sortable list, is there a way to say, pass a className whereby some of the elements in the sortable element would not become draggables/droppables? If not, it seems like it could be implemented similarly to the handle option.. Any interest? Also - I submitted a patch that adds the option "delay" so that draggables in a Sortable won''t truly become activated until after the

hi, Im looking to build a live data grid, where you can add delete rows using dhtml. and was just wondering if anyone is aware of any plugin''s taht may help me. Ive found this example but if anyone is aware of any other plugin''s please let me know http://unspace.ca/datagrid/update thanks scott -- Posted via http://www.ruby-forum.com/.

Hey yall, I wanted to share some code I''ve been working on as it seems up the alley of folks on this list. It''s not rails, per se, but one day... DataGrid: http://development.finetooth.com/?p=6 This also showcases the option.delay perameter I''ve submitted into scriptaculous - hold down your mouse for one second on any column other than Vendor and then drag away ;) The

Hi, Anyone got some tips on how to design some sort of datagrid/calendar where the columns define a resource and the rows define the date. In the corresponding cells are activities that match the resource and date, ... Thanks! Steven. -- Posted via http://www.ruby-forum.com/.

Hello Rprofessionals, The SOM-Obj works very well, when i normalize my data and the plot-function, too ! But i miss or didn't find the possibility , extract the information from the SOMplot "clusterSize" and "mean" for every cluster as quantitative information ( i.e. the DataFrame with an additional column which define the calculate clusters from SOM)? My intention -

Dear Rusers, I am still an unexperienced builder of functions and loops, so my question is very basic: Is it possible to introduce a second variable (j) into my loop. To examplify: # This works fine: fn <- function (x) {if (x>46 & x<52) 1 else 0} res <-NULL for (i in 40:60) res <-c(res,fn(i)) res # But here, there is an error in the "for" expression: fn <-