search for: trendlin

Dear all, I am using abline(lm ...) to insert a linear trendline through a portion of my data (e.g. dataset[,36:45]). However, I am finding that whilst the trendline is correctly displayed and representative of the data portion I've chosen, the line continues to run beyond this data segment and continues until it intersects the vertical axes at each side of...

How to add trendline (i.e. straight line passing through maximum points) in graph. I have worked on the data given below. Please tell me how to add trendline in the graph. The script is as follows =================================== start ==================================================== # The data is as follows...

Hi I would like to display the trendline and the R-square value in a xy scatter in R. For example if I want to plot f vs g I add the trendline using the commands below >library(quantreg) >plot(f,g) >abline(rq(g~f)) however I don't know how to display the R2 in the graph. Thank you in advance. Kind regards Maria [[alter...

Hi, Is there a way to plot trendline with quantmod package? There is addLines function in the package but I can't seem to figure out how to use it (not well documented): > args(addLines) function (x, h, v, on = 1, overlay = TRUE, col = "blue") NULL so arguments "h" and "v" add horizontal and vert...

Hi all, I have a dataset which consists of 2 columns. I'd like to plot them on a x-y scatter plot and fit an exponential trendline. I'd like R to determine the equation for the trendline and display it on the graph. Since I am new to R (and statistics), any advice on how to achieve this will be greatly appreciated. Many thanks, Chris -- View this message in context: http://n4.nabble.com/R-exponential-regression-tp10094...

I am hereby forwarding the data & method use to calculate the Kolmogorov-Smirnov goodness of fit test made manually by me in R launguage which deffers with the actual inbuilt formula as shown below. Further I have plot the graph in R. In that graph how to add trendline (i.e. straight line passing through maximum points in plot) to a Plot. R script is as follows please run this script to see the output in R. ========================= start ========================= # The data is as follows data <- c( 0.01, 0.02, 0.04, 0.13, 0.17 , 0.19 , 0.21 , 0.27 ,...

Dear all, I have data in the following format : X-axis Y-axis <0 10% 0-20 20% 20-40 30% 40-60 40% ......... and so on. I want to plot a bar graph of the above. Also I would want to add a trendline passing either through the center of each bar or through the top. Is it also possible to get the r-squared and p-values for this trendline? How do I all of the above? I would be extremely indebted by your help. Thanks in advance Regards, Anupam -- Graduate Student, Laboratory of Computationa...

Hi, I am trying to fit a logarithmic trendline to a scatterplot of a species accumulation curve. I've tried abline, lines, curve and scatter.smooth but none of these work. Can anyone help please, Kyran

...39;d throw in my thoughts. I'm no R expert! When you talk about an exponential trend line are you refering to: 1) y=ax^b or 2) y=ae^(bx) If 1) then take base10 logs of y and x and then fit them with simple linear regression. Then calculate the antilog of the residulas and plot these as your trendline. If 2) then take natural logs of y and x and follow the rest of the procedure described in 1). Hope this helps. Murray M Cooper, Ph.D. Richland Statistics 9800 N 24th St Richland, MI, USA 49083 Mail: richstat at earthlink.net ----- Original Message ----- From: "chrisli1223" <chris...

Hi everyone, I'm trying to determine the significance of a trendline. From my internet search months ago, I came across the following post. I modified tim and dat for simiplicity. tim <- 1:10 dat <- c(0.17, 1.09 ,0.11, 0.82, 0.23, 0.38 ,2.47 ,0.41 ,0.75, 1.44) fstat <- summary(lm(dat~tim))$fstatistic p.val <- 1-pf(fstat["value"],fstat["...

...e I have my problem - and I know its going to be something really silly! Look at my output: http://www.wittongilbert.free-online.co.uk/RGraph2.jpg the trend line is zig-zagging between y=0 and the value it should be. If you draw a line along the tips of the zig-zags I guess thats a reasonable trendline... Anyone able to help me on this? Also is it possible to get an R-squared type value for the fit of this curve from someplace? Finally (three questions in one!) the first two censored data points (1 in each group) are actually lost to follow-ups. Should they be marked differently from cens...

I have a simple plot: ggplot(polls, aes(x =Date, y = Popular_Support, colour=Party, shape=Source)) + stat_smooth(span=0.5) + geom_point() How can I get the smooth to only render along one of the scales? ie, I want to see regressions for each colour, but not each shape. Right now I get a trendline for each colour and and shape... resulting in an unreadable mess =D Thanks! -- View this message in context: http://www.nabble.com/ggplot-multiple-scales-but-a-stat-for-only-one-of-them-tp19699571p19699571.html Sent from the R help mailing list archive at Nabble.com.

...low 1172, before it bounced back. However, until we make a clean break and close above 1235 level, we aren't getting bullish. That area has been tested twice and failed. We have been trading within this 1174-1233 range for over a month now. NQ has same story. Even though it penetrated the upper trendline, it has resumed trend making a new low of 1582.50. A break of this level could leave us testing 1550 and 1500 levels. We need a close above 1800 to get bullish. Intraday Epit Targets Hit ES NQ 1174.50 1604 1188 1590 1195.75 1619...

...low 1172, before it bounced back. However, until we make a clean break and close above 1235 level, we aren't getting bullish. That area has been tested twice and failed. We have been trading within this 1174-1233 range for over a month now. NQ has same story. Even though it penetrated the upper trendline, it has resumed trend making a new low of 1582.50. A break of this level could leave us testing 1550 and 1500 levels. We need a close above 1800 to get bullish. Intraday Epit Targets Hit ES NQ 1174.50 1604 1188 1590 1195.75 1619...