search for: dxc13

...8 8 9 9 10 10 > diff(sort(x)) [1] 1 0 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 > min(diff(sort(x))) [1] 0 The minimum is given as zero, which is clearly true, but I am interested in only the positive minimum, which is 1. Can I find this by using only 1 line of code, like I have above? Thanks! dxc13 -- View this message in context: http://www.nabble.com/finding-the-minimum-positive-value-of-some-data-tf4417250.html#a12599319 Sent from the R help mailing list archive at Nabble.com.

...x [1] 1 2 3 4 5 > xk [1] 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 I want to do: abs(x-xk[i]) where i = 1 to length(xk)=13. It should result in a 13 by 5 matrix or data frame. Does anyone have a "quicker" solution than FOR loops or apply()? Much appreciation and thanks, dxc13 -- View this message in context: http://www.nabble.com/finding-a-faster-way-to-do-an-iterative-computation-tp18718233p18718233.html Sent from the R help mailing list archive at Nabble.com.

useR's, I want to randomly generate 500 numbers from the standard normal distribution, i.e. N(0,1), but I only want them to be generated in the range -1.5 to 1.5. Does anyone have a simple way to do this? Thanks, dxc13 -- View this message in context: http://www.nabble.com/simple-random-number-generation-tp18642611p18642611.html Sent from the R help mailing list archive at Nabble.com.

useR's I am trying to color the points on a scatter plot (code below) with two colors. Red for values 0.5 -1.0 and blue for 0.0 - .49. Does anyone know a easy way to do this? x <- runif(100, 0, 1) y <- runif(100, 0, 1) plot(y ~ x, pch=16) Thanks, dxc13 -- View this message in context: http://www.nabble.com/color-ranges-on-a-2D-plot-tp14893457p14893457.html Sent from the R help mailing list archive at Nabble.com.

...I know I can use "mat[,-1]" to delete the first column, but I have a much larger matrix where it is impossible to tell how many columns contain all missing values and which don't. Is there a function or something else that may be able to help me accomplish this? Thanks in advance. dxc13 -- View this message in context: http://www.nabble.com/Deleting-columns-from-a-matrix-tp23695656p23695656.html Sent from the R help mailing list archive at Nabble.com.

...would be the corresponding values for 2005. Even though values would be on the left side of the zero line, it doesn't mean they are negative, I just want to compare changes in time. >data 2005 2007 11.42 11.76 11.93 11.97 4.06 4.53 4.29 4.47 Hope this is clear, Thanks in advance. dxc13 -- View this message in context: http://www.nabble.com/A-variation-on-the-bar-plot-tp23374466p23374466.html Sent from the R help mailing list archive at Nabble.com.

...nt is one matrix of size 4x4 in which position [1,1] is the mean of position [1,1] of the given three matrices. The same goes for all other positions of the matrix. If these three matrices are given in separate text files, how can I write code that will get this result I need? Thanks in advance, dxc13 -- View this message in context: http://www.nabble.com/how-to-calculate-means-of-matrix-elements-tp23607694p23607694.html Sent from the R help mailing list archive at Nabble.com.

.... In general, I would like to find a way to do this for any number of given positions between the two vectors that satisfy this. If no positions satisfy this, then return '0' I would like to store the results as an object. If anyone has any ideas, I would greatly appreciate it. Thanks! dxc13 -- View this message in context: http://www.nabble.com/how-to-compare-2-numeric-vectors-tf4469582.html#a12743842 Sent from the R help mailing list archive at Nabble.com.

...ents of 5 degrees. If there are no temperatures available to be put into a grid cell, than that cell should get a missing value, NA, put into it. Also, could the gridded result for each time be written to a text file before processing the next time value? Hope this is clear. Thanks in advance. dxc13 -- View this message in context: http://www.nabble.com/gridding-values-in-a-data-frame-tp23319190p23319190.html Sent from the R help mailing list archive at Nabble.com.

...or scheme (low temperatures in light blue to higher temperatures in dark red) and plot the temperature colors in their respective grid cells on the map? Take this data matrix as some example data: T <- sample(-10:90, 2592, replace=TRUE) mat <- matrix(T, nrow=36, ncol=72) Thanks in advance, dxc13 -- View this message in context: http://www.nabble.com/Plotting-colors-on-a-world-map-tp23484524p23484524.html Sent from the R help mailing list archive at Nabble.com.

...can't seem to get it to work. I want the length along x1 axis to be between 1 and 3 and the length along the x2 axis to be between 1 and 4. All z values for x1 should be equal (say, z=1) because this is a plane, not a cube. Below is my current code. Any help is appreciated Thanks in advance dxc13 x <- seq(from=1,to=3,by=.1) y <- seq(1,4,by=.1) f <- array(1,dim=c(21,1)) z <- as.matrix(cbind(x,y,f)) persp(x=x,y=y,z) -- View this message in context: http://www.nabble.com/help-with-%22persp%22-function-tp19235739p19235739.html Sent from the R help mailing list archive at Nabble.c...

...ue, 21 to 50 green color, 51-70 orange, 71+ red colored cells. For any NAs, they should be colored white. I know how to create a map of the world using map() and add a grid to it using map.grid(), but I can't color code the cells the way I need. Is there a way to do this in R? Thanks again. dxc13 http://www.nabble.com/file/p23514804/time1test.txt time1test.txt -- View this message in context: http://www.nabble.com/plotting-a-grid-with-color-on-a-map-tp23514804p23514804.html Sent from the R help mailing list archive at Nabble.com.

...(v3) + .5, .5) u <- do.call("expand.grid", list(uk1,uk2,uk3)) Here, there are 3 columns; instead of hard-coding this, can the function given above, which will restrict the u data frame to values within the ranges of each variable, be done with the apply function? Thanks in advance. dxc13 -- View this message in context: http://www.nabble.com/applying-a-function-to-data-frame-columns-tp15619657p15619657.html Sent from the R help mailing list archive at Nabble.com.

...nt to take the average of 10 and 13. Then repeat the same process for the second column. The data here is only a sample, but with the data I work with, there are many more columns in each matrix in the list. Does anyone know a efficient way to do this? Maybe using lapply()? Thanks in advance. dxc13 -- View this message in context: http://www.nabble.com/matching-values-in-a-list-tp14767170p14767170.html Sent from the R help mailing list archive at Nabble.com.

useR's, First, I would like to say thanks to John Fox for providing this segment of code to perform intersection for multiple sets: intersection <- function(x, y, ...){ if (missing(...)) intersect(x, y) else intersect(x, intersection(y, ...)) } I want to execute this function on the rows of a matrix I have: Ik.mat.test <- matrix(c(2,3,6,1,2,6,6,1,2),byrow=T,nrow=3) > Ik.mat.test

useR's, I am writing a program in which the input can be multidimensional. As of now, to hold the input, I have created an n by m matrix where n is the number of observations and m is the number of variables. The data that I could potentially use can contain well over 20,000 observations. Can a simple matrix be used for this or would it be better and more efficient to create an external

useR's, Does anyone know what function or package allows one to specify use of the Gaussian kernel to smooth a data set, or is this just the default for most functions? Thanks, dxc13 -- View this message in context: http://www.nabble.com/smoothing-with-the-Gaussian-kernel-tp19323294p19323294.html Sent from the R help mailing list archive at Nabble.com.

...a map('usa'). The image is basically a large rectangular of various colors. When I overlay the United States map, the full rectangle of the image plot is visible, but I only want to display the image WITHIN the United States boundary. Does anyone know a way to do this? Thanks in advance, dxc13 -- View this message in context: http://old.nabble.com/interior-and-exterior-colors-of-a-map-tp26507134p26507134.html Sent from the R help mailing list archive at Nabble.com.

...data for non-ASCII characters ... OK * creating kzs-Ex.R ... OK * checking examples ... ERROR Running examples in 'kzs-Ex.R' failed. I have no idea how to solve the first problem with references the tcltk package and I do not know why my examples won't run. Any help is appreciated. dxc13 -- View this message in context: http://www.nabble.com/Errors-in-R-CMD-check-for-R-2.8.0-tp20150565p20150565.html Sent from the R devel mailing list archive at Nabble.com.

...s condition needs to be satisfied for both points, not just one of them; i.e., if an x1 point satisfies this, but its corresponding x2 point does not, then this point should be removed. Does anyone know a way to do this, in general, for any data frame? Hope this is not confusing. Thanks in advance dxc13 -- View this message in context: http://www.nabble.com/restricting-points-in-a-data-frame-tp15184381p15184381.html Sent from the R help mailing list archive at Nabble.com.