similar to: abline

Dear whom it may concerns, I am Jia Xu, a summer intern analyst at Citi Research. I am also a graduate student studying Financial Engineering at Cornell. I am running regression analysis with Rstudio now. I have been experiencing difficulty with the abline function. No matter I call it directly in linear regression or call it through residual plots, or plot results from lasso regression, it

Hello, I was trying to import data from an Excel file. After I imported the data, I was trying to make a scatter plot. The X axes variable is a time variable, which occupies two columns, one is date, another one is time. Example 21-Apr-03, 4:10 PM. My qestion is: 1. How can I access the data of certain column? I mean how can I refer it in R? 2. How can I make the two column character

Dear R-users, I am using R(a package igraph) to calculate certain topological features of networks. When I try to draw a plot between these features I get an error. Following is the code I am using : *> plot(met_eco_deg,met_eco_bet) > lmout<-lm(met_eco_bet ~ met_eco_deg) > abline(lmout) Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : plot.new

Full_Name: Stephen Eglen Version: 1.4 OS: Redhat Linux 7.1 Submission from: (NULL) (128.252.204.36) abline() produces a spurious line in addition to the correct line, at least with the X11 driver. The postscript file generated also has nan values in it, which causes an error under ghostscript. xs <- c(0, 150, 300) ys <- c(75, 40, 23) par(mfrow=c(1,2)) plot(xs,ys, log="")

In R, How to read Excel file and access the data item? Thank you. --------------------------------- [[alternative HTML version deleted]]

Hello, I am not having success in a simple task. Using the effects package, I would like to add reference lines at probability values of 0.1 – 0.6 on a plot of the effects. The plot command works, but following up with an abline command produces the message “plot .new has not been called yet”, and of course the reference lines were not added. Looking through past R help lists, there was a

I am trying to plot the results of a random effects model where each subject is allowed to have his, or her, own intercept. I use xyplot to plot the data, lme to compute the regression and then try to put a summary regression line on the xyplot. As can be seen by the output pasted below, I am getting an error message, Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : (list)

Hello, I'm trying to plot a fitted lm() line on a plot when the one explanatory variable is log transformed and log="x". I get different lines using abline and predict.lm(). #Example x <- 1:100 y <- rnorm(100) plot(y ~ x, log="x") abline(lm(y ~ log(x))) lines(x, predict(lm(y ~ log(x))), lwd=2) I'm sure I'm missing something but could someone tell me which

Hi, I want to have a horizontal line on a mosaic plot with "vcd" package. This would give me an idea where is 0.5 proportion in a cell. Using "mosaicplot" function of "graphics" package, I can draw a line using "abline." But, with "mosaic" function of "vcd" package, I have tried to use "abline" function, which complains

I really want to do this: abline( a=tan(-kT*pi/180), b=kY-tan(-kT*pi/180)*kX ) where kX,kY and kT are vectors of equal length. But I can't do that with abline unless I use a loop, and I haven't figured out the least unelegant way of writing the loop yet. So is there a way to do this without a loop? Or if I am to resort to the loop, what's the best way of doing it considering that I

I would like to add two horizontal lines representing acceptible drug levels to a trellis plot. I tried using abline and I get an error that "plot.new has not been called." See below. xyplot(FK~WEEK|Event1/MRN, data=FKdat.o1) abline(h=5) abline(h=10) Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : plot.new has not been called yet Any help that can be provided

Hi folks, Win7 64bit R 1.12.0 I run following command on R:- > ToothGrowth > attach(ToothGrowth) > plot(dose,len) > matrics=lm(len~dose) > abline(metrics) Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : plot.new has not been called yet Only a grey diagram is displayed without content > plot(abline(metrics)) Error in int_abline(a = a, b = b, h = h, v

ABCD are four matrix. A * Inverse((Transpose(A)*Tranpose(B)*B*A+C)) * Transpose(A) * Transpose(B) * D how to write in R in an efficient way? --------------------------------- [[alternative HTML version deleted]]

Hello, if I do: x <- c(0.5,1,3,6,10,20,40) y <- 10-log(x)+rnorm(7,0,0.05) r1 <- lm(y ~ log(x)) plot(log(x),y) abline(r1) # I get a nice plot with the regression line almost over the points. but: plot(x,y,log="x") abline(r1) gives me exactly the same plot for the points but the regression line is completely off ! I would like the plot with the real values of X on

How can I deal with missing values in the excel file? I used read.csv to imports data, how ever there are missing values in the csv file. When I use names(), it turns out a error message: " names attribute must be the same length as the vector" What can i do with the missing values? Thanks --------------------------------- [[alternative HTML version deleted]]

Hello, I have a basic question. Sorry if it is so evident.... I have the following data file : http://ekumen.homelinux.net/mydata.txt I need to model Y~X-1 (simple linear regression through the origin) with these data : load(file="mydata.txt") X=k[,1] Y=k[,2] aa=lm(Y~X-1) dev.new() plot(X,Y,log="xy") abline(aa,untf=T) abline(b=0.0235, a=0,col="red",untf=T)

Thanks in advance, I have searched and read the archives extensively and have been unable to find a question (solution) exactly mimicking my problem. I have created a scatterplot simulation of data through which I have drawn a linear regression in this manner: points(y~x, pch="*", col="black") lm(y~x) fm=lm(y~x) abline(fm, col="red") This works. The problem

I'm working over an ssh connection without X11 graphics. I'm making a plot, the first stage of drawing which takes a long time. I want to experiment with adding details. Here is what I was hoping to do, which results in error. ## Draw the master plot on png dev 2 png(file="master.png") plot(1:10) ## Save a copy on png dev 3 png(file="copy1.png") dev.set(2)

Hello, I've some questions concerning log-transformations and plotting of the regression lines. So far as I know is it a problem to log-transform values smaller than 1 (0-1). In my statistics lecture I was told to do a log(x+1) transformation in such cases. So I provide here a small example to explain my questions: # Some example data for testing a1

Hello. I am trying to get my axis label to read as follows (The symbol) Delta AUC blah blah... then below it...(some other text) The problem is the Delta symbol shows up beside the "(some other text)" rather than the "AUC". Does any one know how I can get the Delta to remain beside AUC? Here is the actual command should you care to look at it. par(mar=c(8,8,4,4))