search for: elaine

Hello, This is Elaine. I am using R 3.0 to download package vegan but failed. The warning message is package ‘vegan’ successfully unpacked and MD5 sums checked Warning: unable to move temporary installation ‘C:\Users\elaine\Documents\R\win-library\3.0\file16c82da53b1b\vegan’ to ‘C:\Users\elaine\Documents\R\win-library...

...fferent bird species between Island B and E. In other words, I would like to find out bird species present (1) on Island B but absent (0)on island E, and vice versa (absent (0) on Island B but present (1)on island E). Please kindly advise how to code the purpose above. Thank you in advance. Elaine [[alternative HTML version deleted]]

....D0100 (100 species in total) The cell of the matrix describes presence (1) or absence (0) of the species in an island. Now I would like to search the species with absence (0) in all the islands (Island A to Island O.) Please kindly advise the R code for the search purpose. Thank you. Elaine [[alternative HTML version deleted]]

...latitude of each range midpoint ranges from 9 to 19. I would like to have the average range size of every degree of latitude. For example, the average range size of latitude degree 10 (10.0-10.99: Butterfly A2, B1, B2) Please kindly help with R code to calculate the average values. Thank you. Elaine The details are as followed. Butterfly A1 130.5 9.45 Butterfly A2 450.68 10.2 Butterfly A3 1102.38 9.3 Butterfly A4 893.34 16.4 Butterfly B1 820.2...

Hello, I am making a boxplot of 13 boxes. I tried to color the box using 13 colors but failed. Only red and brown were displayed. Green, blue, and grey disappeared. Please kindly advise modification after checking the code below. Thank you in advance. Elaine R code # data input dataN <-read.csv("H:/a_mig_distance_B_NB/R_data/Mig_bird_586_20120925.csv",header=T, row.names=1) dim(dataN) dataN[1,] str(dataN) # graph par(mai=c(1,1.03,0.4,0.4)) obs.group<-dataN$Diet_B par(new=T) boxplot(GE_distance~Diet...

Dear, I am a newbie to R. Now I am learning to draw boxplot using graphics(). I want to highlight the median position with a round point and the value left (or on the top of)to the point. Please kindly share the command and thank you. Elaine [[alternative HTML version deleted]]

Hello This is Elaine. I am using package lattice to generate boxplots. Using Richard's code, the display was almost perfect except the outlier shape. Based on the following code, the outliers are vertical lines. However, I want the outliers to be empty circles. Please kindly help how to modify the code to change t...

...s(defaultPackages = c(old, "Rcmdr","RODBC", "utils")) }) .First <- function() { library(utils) setwd("C:/Documents and Settings/Administrator/My Documents/R") connections <- read.csv("connections.csv", header=TRUE) cat("\n Welcome to R Elaine!\n\n") } ... When I launch R, it does not give me any error. The working directory appears to be set by the Rprofile.site file, but the connections object is not in my workspace: Welcome to R Elaine! Loading required package: tcltk Loading Tcl/Tk interface ... done Loading required pac...

...rence *â*^1-*â*^2 and bootstrap the slope coefficent step 3 find out the sampling distribution above and calculate the % =0 step 4 multiple the % by 2 However, I am new to the package boot. I wrote a code for step 1 and got a error message. Please kindly advise how to modify it and thank you. Elaine code require(boot) function.fit2 <- function(data){ #data <- data[indices,] # select obs. in bootstrap sample fit2 <-lm(logDIS~logBMN+I(logBMN^2)) coefficients(fit2) # return coefficient vector } boot.fit2 <- boot(dataN, funct...

Hello, I have a matrix (class matrix) composed of GridCell (row and column). The matrix value is the beta diversity index value between two grids. Now I would like to get the average value of each GridCell. Please kindly advise how to make the calculation. Thank you. Elaine The matrix looks like (cited from Michael Friendly) I would like to get the average value of each color. Obs stim RPur Red Yel Gy1 Gy2 Green Blue BlP Pur1 Pur2 1 RPur . . . . . . . . . . 2...

Dear list, I wanna select the significant variables relative to bird distribution, using stepwise method. However, the result is always the best-fit model. Please kindly suggest if it is possible to show the selection process. Thank you Elaine [[alternative HTML version deleted]]

Hello I have data of body length and body weight of people of different skin colors. I tried to write a code to plot body length and body weight according to the skin colors. (Thanks for Petr's advice so far.) A loop is used but an error shows up in the following code. It says: unexpected '}' in "

...uired to be generated using the same y-axis above but an x-axis on the left side of the y-axis. (The higher latitude in the south hemisphere, the left it would move) Please kindly share how to design the south plot and regression line for richness. Also, please advise if any more info is in need. Elaine [[alternative HTML version deleted]]

Dear List, This is Elaine, a postgraduate studying in bird distributions in East Asia. I want to calculate Simpson dissimilarity index, based on a presence/absence matrix of bird species in islands in East Asia. (matrix row: 36 islands/matrix column: species ID) (R package vegan to make NMDS and R package betapart)...

Dear List, I am using plot for homework. The x-axis covered from 0 to 80, with 4 intervals. However, the plot only showed 0, 40, 80. 20 and 60 disappeared. Please kindly advise how to show 0, 20, 40, 60, 80 for the axis interval. Thank you. Elaine [[alternative HTML version deleted]]

Dear List, I ran a regression model using lm and produced a regression line using abline. The line ranges from -20 to 20 in x axis, and the section I only want is from -20 to 0. Please kindly advise any function in abline () to set the range of x axes. Thank you Elaine [[alternative HTML version deleted]]

Hello, I drew a plot of weight and height of people and fitted it with a polynominal regression x^2. (using curve()) Now I would like to draw the confidence interval line for the fitted curve. Please kindly advise the code for the purpose. Thank you. Elaine [[alternative HTML version deleted]]

Dear List, I would like to obtain biplot containing arrows and variable labels. However, after checking the previous message and package CCA and function anacor, my attempt remains an open question. Please kindly advise code or package I might miss to achieve it. Thank you. Elaine [[alternative HTML version deleted]]

...wing data (response) were used to generated a simple regression. (using lm) Now some weight data are found but without wing data (B6, B7). I want to use the generated simple regression to produce wing data of B6 and B7 by their weight data. Please kindly advise R code to carry it out. Thank you. Elaine [[alternative HTML version deleted]]

Hello , I want to compare two quadratic regression models with non-parametric bootstrap. However, I do not know which R package can serve the purpose, such as boot, rms, or bootstrap, DeltaR. Please kindly advise and thank you. Elaine The two quadratic regression models are y1=a1x^2+b1x+c1 y1= observed migration distance of butterflies() y2=a2x^2+b2x+c2 y2= predicted migration distance of butterflies (based on body mass) x= body mass of butterflies null hypothesis: a1=a2 and b1=b2 and c1=c2 bootstrap to test if the coef...