search for: site7

...e to find the information from the links below please contact us again telling us you have not been able to find the information and restate as specifically as possible your question. Most general questions can be answered by referring to the A-Z section of our website: http://housing.lon.ac.uk/site7/AZ.htm Some specific areas of common enquiry: CAN WE HELP YOU? http://housing.lon.ac.uk/site7/College.htm I START NEXT SEPTEMBER CAN YOU HELP? As no suitable offers are published prior to MAY you should re-apply for a password at the end of APRIL. You will not be sent a password until then. Add...

..."), c("stage1","stage2","stage3"))) Y<- matrix(1:28, nrow=4, ncol=7, dimnames=list(c("A","B","C","D"), c("site1","site2","site3","site4","site5", "site6","site7"))) I would like to multiply first column of the "Y"matrix (site1) to the all of the columns in "X"matrix. Then, the product will be three new columns (for example:site1stage1, site1stage2 and site1stage3 or something like this) which I want to add to "Y"mat...

I want to gain thousands of random sampling data by randomizing the presence-absence data. Meantime, one important limition is that the row and column sums must be fixed. For example, the data "tst" is following: site1 site2 site3 site4 site5 site6 site7 site8 1 0 0 0 1 1 0 0 0 1 1 1 0 1 0 1 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 1 1 0 1 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 sum(tst[1,]) = 3, sum(tst[,1])=4, and so on. When I randomize the data, the first row sums must equal to 3, and the first column sums must equal to 4. The rules nee...

Dear r-users! I would like to cross two data frame which have the same row number but different in the number of column. Can anybody help me for this case ? Thanks a lot in advance -------------------------------------------------------------------------------- Majid Iravani PhD Student Swiss Federal Research Institute WSL Research Group of Vegetation Ecology Z?rcherstrasse 111

...0.44463 -17.818 < 2e-16 *** site2 1.38308 0.44463 3.111 0.00268 ** site3 3.86013 0.44463 8.682 8.18e-13 *** site4 3.55697 0.44463 8.000 1.53e-11 *** site5 4.10841 0.44463 9.240 7.48e-14 *** site6 4.30541 0.44463 9.683 1.13e-14 *** site7 4.91811 0.44463 11.061 < 2e-16 *** site8 5.69492 0.44463 12.808 < 2e-16 *** site9 7.06762 0.44463 15.896 < 2e-16 *** variety2 -0.46728 0.46868 -0.997 0.32210 variety3 0.07877 0.46868 0.168 0.86699 variety4 0.95418 0.46868 2.036...

Dear List, I often have to merge two or more data frames containing unique row names but with some columns (names) common to the two data frames and some columns not common. This toy example will explain the kind of setup I am talking about: mat1 <- as.data.frame(matrix(rnorm(20), nrow = 5)) mat2 <- as.data.frame(matrix(rnorm(20), nrow = 4)) rownames(mat1) <- paste("site",