similar to: using rasterImage within image

Hi R-help list What is the threshold for the `useRaster` argument of graphics::image() to decide whether a grid is "regular" or not (i.e. the usage of useRaster=T is allowed or not). My `dev.capabilities("rasterImage")$rasterImage` is "yes". I could not find this information in the internet. I also could not find the source code of the graphics::image() function (I

Hello, I have been exploring the possibility to transition some code that currently uses image() to use the new rasterImage(). To date, I haven't been able to specify a color look-up strategy that works. For example... nx <- 100 ny <- 100 m <- matrix(data = rep(seq(0,1, length = nx), ny), ncol = nx, nrow = ny, byrow = TRUE) plot(1:nx, 1:ny, type = "n") my.color

Dear all, This may be specific to Mac, I haven't had a chance to test another platform. Consider this, plot(1,1,t="n") rasterImage(matrix(1),1,1,1,1) library(grid) grid.rect(gp=gpar(fill="grey")) The grid.rect covers the full device window as expected. However, when I resize the window ever so slightly (interactive device) the rectGrob is suddenly clipped to the previous

I was pointed to the Cairo package for plotting PNG images on a device. I've been playing around with it, but found that after I use the rasterImage function, I can't add anything any more to the device, eg : img <- readPNG(system.file("img", "Rlogo.png", package="png")) r = as.raster(img[,,1:3]) r[img[,,4] == 0] = "white" CairoWin()

Hi, I have a plot and I would like to overlay a PNG image over it. I'm using the rasterImage function to do this, but the problem I'm facing is working out the coordinates of the upper right corner of the final image in user coordinates. That is I can place the image so the lower left is located at the bottom of the y-axis and the left end of the x-axis. Since my image is say 100px x

the details section of ?image says: > If useRaster is not specified, raster images are used when the > getOption("preferRaster") is true, the grid is regular and either > dev.capabilities("raster") is "yes" or it is "non-missing" and there > are no missing values. but in my experience this is never the case and

I noticed some undocumented and inconsistent behavior in device_Raster when a plot is produced with reflected axes such as: image(volcano, xlim = c(1,0), useRaster = TRUE) image(volcano, ylim = c(1,0), useRaster = TRUE) The `pdf` device will perform horizontal and vertical reflections, while `quartz` will ignore the transformations when plotting to the screen, but when plotting to a

Hello, I have a data frame which looks like > head(d) a1 a2 n j col 1 1 1 88341002 11 #E7E7E7 2 1 2 25094882 11 #E7E7E7 3 1 3 16916246 11 #E7E7E7 4 1 4 14289229 11 #E7E7E7 5 1 5 11945929 11 #E7E7E7 6 1 6 8401235 11 #E7E7E7 The values in 'j' run from 1 to 11. I would like to plot the point (a1,a2) with color given by j I tried mi <-

Hi, When R generates density plots and these are exported to postscript( a=matrix(1:100,10,10);image(a,col=rainbow(100);dev.copy2eps(file="image.eps") ) The result often looks bad when rendered on screen. The help page states that this is because programs use anti-aliasing. That seems to be true - turning off anti-aliasing for gs (-dGraphicsAlphaBits=1) of in OSX's preview makes

Hi, I have a matrix that I am displaying via image. I would like to obtain an image where the columns are 'grouped' (I have a grouping variable). But I am not sure how how I can draw the lines to indicate the grouping in the margin. I realize this is essentially waht heatmap does but as I have a set of custom breaks and colors I wanted to generate this via image. I can see that it is a

I am working on dumping raster data from R into PNG files using rasterImage(). I am working with a test matrix from the rasterImage() example and using it to produce a PNG image with the following code: # From the example for rasterImage(). A 3 pixel by 5 pixel b/w checkerboard. testImage <- as.raster(0:1, nrow=3, ncol=5) testImage [,1] [,2] [,3] [,4] [,5] [1,]

I am working on dumping raster data from R into PNG files using rasterImage(). I am working with a test matrix from the rasterImage() example and using it to produce a PNG image with the following code: # From the example for rasterImage(). A 3 pixel by 5 pixel b/w checkerboard. testImage <- as.raster(0:1, nrow=3, ncol=5) testImage [,1] [,2] [,3] [,4] [,5] [1,]

Dear R users, I have a desktop computer and a laptop, both of them with Ubuntu Lucid. The former has R2.10 installed from Ubuntu repositories (this is the most recent version in the repositories), while the latter has R2.13 from the CRAN repositories. I noticed that postscript files generated with R2.10 are "better" than files generated with the latest release of R, in particular for

> On 7 May 2018, at 11:01, Sedat Dilek via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On Mon, May 7, 2018 at 5:52 AM, Brian Cain <brian.cain at gmail.com <mailto:brian.cain at gmail.com>> wrote: >> The simplest way to run a clang test case that I know of is to clone both >> llvm and clang repos, run all the tests, then run an individual test. >>

The simplest way to run a clang test case that I know of is to clone both llvm and clang repos, run all the tests, then run an individual test. IIRC like so: git clone llvm ...... cd llvm/tools git clone clang ..... cd ../../ mkdir build cd build cmake ../llvm ninja check-clang ./bin/llvm-lit -v ./tools/clang/test/Sema/asm.c On Sun, May 6, 2018 at 7:10 AM, Sedat Dilek via llvm-dev <

Hi, while experimenting with llvmlinux on Debian/testing AMD64 I wanted to run some x86-64 ASM tests. I fell over [1] and wanted to run it. So, I cloned clang from Git... $ git clone https://github.com/llvm-mirror/clang.git I looked through some docs where I have seen I need "llvm-lit" or "lit.py". The Debian package llvm-7-tools from <apt.llvm.org> does ship

On Mon, May 7, 2018 at 5:52 AM, Brian Cain <brian.cain at gmail.com> wrote: > The simplest way to run a clang test case that I know of is to clone both > llvm and clang repos, run all the tests, then run an individual test. > > IIRC like so: > > git clone llvm ...... > cd llvm/tools > git clone clang ..... > cd ../../ > mkdir build > cd build > cmake

Hi I did a google search on this and came up with nothing. OK, in the latest release of R for windows, I want to change the gui to SDI mode. Edit -> GUI preferences Choose SDI Apply I get the message about properties not being able to be changed on a running console, and that I need to save. So I click Save, and am met with a "Save As" dialogue box with the default file called

I have tackled a major bug that affected sdi.c32 especially, but might at least theoretically have affected other formats as well. It *appears* to load the SDI image I managed to stitch together with XP Embedded Studio, but it doesn't actually boot neither on my system nor in simulation; then trying to upgrade it to SP2 caused it to corrupt itself, so I'm not all that keen to trying

configure.ac | 1 libswfdec/swfdec_audio_event.c | 1 libswfdec/swfdec_button_movie.c | 3 libswfdec/swfdec_color.c | 26 ++ libswfdec/swfdec_color.h | 2 libswfdec/swfdec_compiler.c | 5 libswfdec/swfdec_image.c | 26 --