search for: dist3

Displaying 4 results from an estimated 4 matches for "dist3".

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2004 Oct 01
3
Reading multiple files into R
...Reading individual files one by one requires writing enormous amount of code that will look something like the following. **************** maptools:::dbf.read("wb-01vc.dbf")->dist1 maptools:::dbf.read("wb-02vc.dbf")->dist2 maptools:::dbf.read("wb-03vc.dbf")->dist3 maptools:::dbf.read("wb-04vc.dbf")->dist4 maptools:::dbf.read("wb-05vc.dbf")->dist5 maptools:::dbf.read("wb-06vc.dbf")->dist6 maptools:::dbf.read("wb-07vc.dbf")->dist7 maptools:::dbf.read("wb-08vc.dbf")->dist8 maptools:::dbf.read(&quo...
2010 May 11
2
question about R
Hi, At each iteration in my program,I need to generate tree vectors,X1,X2,X3, from exponential distribution with parameters a1,a2,a3. Can you help me please how can I do it such that it take a little time? thank you khazaei
2006 Mar 08
1
function gdist, dist and vegdist in mvpart
...rownames, variables, varnames, extras, extranames, : Variable lengths differ When computing the matrices directly... ba12.dist1 <- gdist (ba12[,18:29], method="maximum", full=T, sq=F) ba12.dist2 <- vegdist (ba12[,18:29], method="jaccard", diag=T, upper=T) ba12.dist3 <- dist (ba12[,18:29], method="minkowski", p=1, diag=T, upper=T) and looking at them, there appears to be no difference though only ba12.dist1 works with mvpart. With the other two I get the same error message as above. What I am missing? Where is the problem? Thanks for helping....
2006 Nov 30
3
newbie: new_data_frame <- selected set of rows
Hello, this is probably trivial but I failed to find this particular snippet of code. What I got: my_dataframe (contains say a 40k rows and 4 columns) distances (vector with euclidean distances between a query vector and each of the rows of my_dataframe) What I do: after scaling data my_dataframe I calculate distances. order them then extract top five hits my_dataframe <-