similar to: Inconsistency in grid::grid.polyline

Hi You could also look at dev.capture(), depending on which screen device you are using. Paul On 16/10/23 05:24, Duncan Murdoch wrote: > On 15/10/2023 12:05 p.m., Shu Fai Cheung wrote: > > Let me clarify my question: > > > > plot.new() > > polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5)) > > > > If the device is an on-screen device, can I check

Hi I am unaware of any Wayland display support. One useful way forward would be an R package that provides such a device (along the lines of 'Cairo', 'tikzDevice', et al) Paul On 27/10/23 23:16, quentin.thorne via R-devel wrote: > Hello, > > I'm interested in understanding the current state of Wayland display > support in R plot, and I was wondering if any

Hi On 8/03/23 15:27, Rusty Travis wrote: > On 3/7/23 13:12, Paul Murrell wrote: >> Hi >> >> I think the main issue here is that you are *drawing* text on the >> graphics device, so I would only expect to see literal XML text output >> in the result. >> ''' >> >> Hope that helps > > Thank you for your consideration of the

Hi I don't think this is an R issue (it is separate from the Cairo Symbol font problem). For PDF output, R actually relies on the Symbol font having the Adobe Symbol Encoding (Appendix D of the PDF Reference https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/pdfreference1.7old.pdf) and just outputs the font as "Symbol", which relies on it being one of the Standard

I see. Peter, you are right about the font that causes the issue. Paul, thanks for your insights. I'll bring this to the Fedora font experts to see if we can arrive at a more permanent fix. I'll report back with any conclusion. @Martin: Meanwhile, at least you have options. One is to embed the fonts, either as Peter suggested or using cairo_pdf instead. Alternatively, Peter also has shown

Hi guys at mapstraction, I made a change in the Polyline.toMicrosoft() function, in order to have all the power that a VEShape has, for instance fill color. Below is the new code, if you want to use it, change it, or whatever. Cheers, Beta /** * toMicrosoft returns a Microsoft polyline * @returns a VEShape */ Polyline.prototype.toMicrosoft = function() { var mpolyline; var mpoints

I like to use complex numbers for 2-dimensional geometry. E.g., > polyAngles2 function (xV, yV) { stopifnot((length(xV) == length(yV)) && (length(xV) >= 3)) z <- complex(re = xV, im = yV) c(NA, diff(Arg(diff(z))), NA) # radians, positive is counter-clockwise } > x <- c(0:3) > y <- c(0,0,1,1) > polyAngles2(x,y) / pi * 180 [1] NA 45 -45 NA Bill

A polyline by definition has many angles, so your question is ill-formed. And this is a question about math, not R, so is off topic here. I suggest reading Wikipedia. -- Sent from my phone. Please excuse my brevity. On January 29, 2018 11:10:02 PM PST, javad bayat <j.bayat194 at gmail.com> wrote: >Dear R users >I am trying to find a formula to calculate the angle of a polyline. Is

Assuming your polyline is defined by two vectors, one for the x coordinates, one for the y coordinates, you can try the following library(NISTunits) polyangles <- function(xV,yV) { stopifnot( (length(xV)==length(yV)) && (length(xV) >= 3)) v <- function(i) { c( xV[i]-xV[i-1], yV[i]-yV[i-1])} vlen <- function(v) { sqrt(sum(v*v)) } lV <- rep(NA_real_,length(xV)) for

This was actually the first thing that ChatGPT debugged for me. The issue was that I was able to click on the link when I displayed the raw SVG in the browser (you can use that to test whether the syntax is even correct), but not when the svg displays inside a html page with the <img ...> tag. ChatGPT correctly identified the issue and suggested a solution using <object ...> tags

Dear R users I am trying to find a formula to calculate the angle of a polyline. Is there a way to do this? Many thanks. -- Best Regards Javad Bayat M.Sc. Environment Engineering Alternative Mail: bayat194 at yahoo.com [[alternative HTML version deleted]]

Hello, I'm interested in understanding the current state of Wayland display support in R plot, and I was wondering if any progress or discussions have taken place regarding this matter. As Wayland continues to gain popularity as a display protocol on modern Linux systems, having Wayland support for R's plotting capabilities would be a significant enhancement. Could anyone provide

On 16.08.2024 13:46, Iago Gin? V?zquez wrote: > Hi all, > > On one hand, I wanted to ask if there is some place where I can check a changelog / NEWS for the grid package, as it is not on CRAN. And in that case, where can I find it? Grid is part of R, hence you can look at R's NEWS, e.g. at <https://cran.r-project.org/doc/manuals/r-devel/NEWS.html> or directly in the svn

Hi Paul Is there a concrete working example somewhere that shows how to use these to do an animation on Windows (R Gui &/or RStudio) using base R plot() and friends? I have several old examples somewhere that used to work (R < ~ 3), but now no longer work as before. Date: Mon, 25 Mar 2024 10:43:29 +1300 From: Paul Murrell <paul at stat.auckland.ac.nz<mailto:paul at

Also see the "arctext" function in the plotrix package. Jim On Fri, Mar 31, 2023 at 11:12?AM Jim Lemon <drjimlemon at gmail.com> wrote: > > Hi Jinsong, > Maybe "srt" will do what you want. As you noted non-orthogonal > rotations may not work on some devices. You may be able to download > mirror fonts from places like fontmirror.com, but it more

ggplot2 ------------------------------------------------------------ ggplot2 is a plotting system for R, based on the grammar of graphics, which tries to take the good parts of base and lattice graphics and avoid bad parts. It takes care of many of the fiddly details that make plotting a hassle (like drawing legends) as well as providing a powerful model of graphics that makes it easy to produce

ggplot2 ------------------------------------------------------------ ggplot2 is a plotting system for R, based on the grammar of graphics, which tries to take the good parts of base and lattice graphics and avoid bad parts. It takes care of many of the fiddly details that make plotting a hassle (like drawing legends) as well as providing a powerful model of graphics that makes it easy to produce

The R-help listserv deletes most attachments (as security risks) and your attachments (I assume) did not come through. Provide code for a minimal reprex or a site from which those interested in helping can get your plots instead if no one who already knows about this issue responds. You might also try posting on the Posit/ggplot Help site, as someone there may be able to help. Cheers, Bert

Hello: I want to present a sequence of plots as an animation. As a toy example consider the code function(n){for (i in 1:n){ plot(1:100,sin(i*(1:100)),type="l") title(paste("n=",i)) segments(0,0,100,0,col=2) }} This sort-of works on a MacOS platform, but the rendering of the plots is a bit choppy. Inserting a sleep function allows the plots to evolve smoothly.

Hello, my name is Mario and I''m new to Mapstraction (and to Javascript too). I''d like to know how can I remove a listener previously added with the method addEventListener. I found nothing on the documention so I coded a removeEventListener method. If you think it will be useful I can post it (but as i said I''m a newbie to both Javascript and Mapstraction so it can be