similar to: Fidelity of lattice graphics captured to jpeg or png

I want to predict values from an existing lm (linear model, e.g. lm.obj) result in R using a new set of predictor variables (e.g. newdata). However, it seems that because my linear models was made by calling scale() on the target predictor that predict exits with an error, "Error in scale(xxA, center = 9.7846094491829, scale = 0.959413568556403) : object 'xxA' not found". By

Hi: Goal: use R to turn a matrix of 1's and 0's into a corresponding image (e.g. png) of black and white pixels. Why R: Yes, I can do this more efficiently and precisely with a perl module like Image::PBM. Been there, done that many times, etc. (Just humor me. I'm trying to do this with R for a number of reasons.) Problem:

Hi, I expect that if I change only the resolution of an image, although the image would have more pixels, if viewed in the same physical size, the elements in the image would have the same physical size but with more detail. However, when I use the "res" parameter of png() this is not what I see. Would someone show me how I can just "increase the resolution" without

Allow to skip testing the filesystem "foo" if the environment variable SKIP_TEST_CHARSET_FIDELITY_foo=1 is set. This way it possible to not test one or more filesystems without disabling the test altogether. --- tests/charsets/test-charset-fidelity.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/tests/charsets/test-charset-fidelity.c

I'm having a problem when using heatmap. Even though the diagonal of my matrix is all the same value, the diagonal of my heatmap is not all the same color. Any suggestions? Here is some reproducible code: ######################################### # Get data nba <- read.csv("http://datasets.flowingdata.com/ppg2008.csv", sep=",") # Reorder nba <-

Hello R-Help, I want to be able to read in a raster image, plot it with grid.raster or rasterImage and save the image with one pixel per a pixel element from my array. Saved preferably in a common image format. The real goal of my question is to eventually read in images with text on them, manipulate them with my controlled functions, save them without changing the image dimensions, and perform

I have two chromatograms I want plotted on the same axes. I would like the plots to be transparent, so the first chart is not obscured. I have tried adjustcolor(..., alpha.f=0.3), the problem is that my chromatogram is so dense with datapoints that they overlap and the entire graph just ends up a solid color. The second histogram still obscures the first. Consider this example: col1 <-

odfWeave is throwing up a cryptic error, after successfully processing a file with a large number of figures (~30) and many \Sexpr{} calls. The error is (at least to me) cryptic. I am not sure where to look to correct this problem. Here's the error: Post-processing the contents Error in .Call("RS_XML_Parse", file, handlers, endElementHandlers, as.logical(addContext), :

I have a simple graph (oode below) which looks fine on the screen but when I save it in png format the title (actually the last mtext line) is cut off. I am pretty sure that I am doing something very stupid but other than playing around with the png height and width commands which don't seem to help I have no idea of what to look for. Any suggestions or cures would be appreciated. Thanks

I'm trying to connect a sip call from sipgate to Asterisk A to Asterisk B. Both are behind NAT, but port forwarded. I get the connection, but no voice - either in or out. I can call on SIP from A to B (and from B to A). Do it all the time. Asterisk A receives SIP calls from Junction and Teliax. CLI on A looks right: == Using SIP RTP TOS bits 184 == Using SIP RTP CoS mark 5 ==

Do I recall correctly that there is an R package that can take an image, and help one estimate the x/y coordinates? I can't find the package, thought it was an R-tool, but would appreciate any leads. Thanks, Rob

Dear group, Here is my environment: > ls() [1] "DailyPL100419" "DailyPL100420" "DailyPL100421" "dd" "i" "l" "PLglobal" "Pos100416" "Pos100419" "Pos100420" "Pos100421" "position" [13] "result" "sel"

On Wed, Nov 06, 2019 at 10:01:49AM -0600, Michael Hennebry wrote: > On Wed, 6 Nov 2019, Michael Hennebry wrote: > > >On Sun, 3 Nov 2019, Jon LaBadie wrote: > > > >>Have you tried adding the Brother CUPS and/or generic LPR software? > >> > >> https://support.brother.com/g/b/downloadtop.aspx?c=us&lang=en&prod=hll2360dw_us > > >

Dear R-helpers, I am working with 'cph' models from 'rms' library. When I build simple survival models, based on 'Surv(time, event)', everything is fine and I can make nice plots using plot(Predict(f, time=3)). However, recently I tried to be more specific and used 'Surv(start, stop, event)' type model. Using this model 'plot(Predict(f))' works OK, but

I am having trouble showing the Greek symbol "beta" correctly in the y-axis label of bitmap plots. Specifically, on my system the top of the "beta" symbol is cut off using the following example: file.jpg <- paste(tempfile(), ".jpg", sep = "") jpeg(file.jpg, h = 3, w = 3, units = "in", res = 300, type = "Xlib") boxplot(rnorm(10),

Hello all: After I compile the R-1.7 with the follows in Linux7.3: configure --with-x --with-jpeglib --with-libpng --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib and make and make install. The R is able to generate PNG/JPEG files from the command line. However, when I put the same commands in a batch file and run: R --gui BATCH R.Batch.file It gave me a error in the

Hi everyone, I've been opening up R 2.0.1 from the dock and then starting the Mac OSX X11 server. After that I call >jpeg("test.jpg",plot(rnorm(10))) and r pops up a quartz window with the appropriate graph in it and puts a file called test.jpg into the HOME which is 0kb in size and is completely empty. There is no error message. I've tried >png("test.png",

Hello All, I am using library "party" and I have found a curious/strange behaviour when trying to save the output of a ctree in a file via jpeg/png command. If you use: ################ library(party) airq <- subset(airquality, !is.na(Ozone)) airct <- ctree(Ozone ~ ., data = airq) plot(airct, terminal_panel = node_boxplot, drop_terminal = FALSE) ############### you get a

Hi, When I want to output a png file, I have the following error message : Error dans X11(paste("jpeg::", quality, ":", filename, sep = ""), width, : inpossible de d?marrer le p?riph?rique JPEG De plus : Warning message: impossible d'ouvrir le fichier JPEG 'Test.jpeg' or in english Error in X11(paste("jpeg::", quality, ":",

Hi, I have some code that uses rJava. One of the Java side methods returns a byte[] representing the bytes from a PNG image. What I'd like to do is to be able to bring up the PNG on the R side (I can bring up a Swing window to show the PNG but I want to avoid that). I have looked at the pixmap and rimage packages but don't seem to be able to work out how I'd go about this (or if