search for: atan2

...ts.h | 3 +-- libswfdec/swfdec_debugger.c | 2 +- libswfdec/swfdec_movie.c | 2 +- libswfdec/swfdec_script.c | 2 +- libswfdec/swfdec_sprite_movie.c | 4 ++-- libswfdec/swfdec_tag.c | 4 ++-- libswfdec/swfdec_text_field.c | 4 ++-- test/trace/atan2-5.swf |binary test/trace/atan2-5.swf.trace | 6 ++++++ test/trace/atan2-6.swf |binary test/trace/atan2-6.swf.trace | 6 ++++++ test/trace/atan2-7.swf |binary test/trace/atan2-7.swf.trace | 6 ++++++ test/trace/atan2-8.swf |binary test/trace/...

Hi ?atan2 says that atan2(y,x)=atan(y/x) for x and y numeric or complex vectors. Well, I would expect atan2(1,1i) to be equal to atan(-1i), but > atan2(1,1i) Error in atan2(y, x) : Non-numeric argument to mathematical function > R.version _ platform powerpc-apple-darwin8.5.0...

Hi ?atan2 says that atan2(y,x)=atan(y/x) for x and y numeric or complex vectors. Well, I would expect atan2(1,1i) to be equal to atan(-1i), but > atan2(1,1i) Error in atan2(y, x) : Non-numeric argument to mathematical function > R.version _ platform powerpc-apple-darwin8.5.0...

Dear all, I've got a problem with the function atan2. For a couple of coordinates x and y, This function returns the angle between the vector of coordinates (x, y) and the abscissa axis, i.e. it is the same as atan(y/x) (as indicated on the help page). If we consider the vector with coordinates x = 0 and y = 0, we have the following result: &gt...

...perations. What is the criteria for adding an intrinsic or a built-in operation? For example, could the 'frem' instruction be an intrinsic? Could you remove it from LLVM entirely and make it an external function? What distinguishes 'frem' from 'sin', 'pow', 'atan2', etc.? Regards, Jon

.... library(grid) # function to draw curly braces in red # x1...y2 are the ends of the brace # for upside down braces, x1 > x2 and y1 > y2 Brack <- function(x1,y1,x2,y2,h) { x2 <- x2-x1; y2 <- y2-y1 v1 <- viewport(x=x1,y=y1,width=sqrt(x2^2+y2^2), height=h,angle=180*atan2(y2,x2)/pi, just=c("left","bottom"),gp=gpar(col="red")) pushViewport(v1) grid.curve(x2=0,y2=0,x1=.125,y1=.5,curvature=.5) grid.move.to(.125,.5) grid.line.to(.375,.5) grid.curve(x1=.375,y1=.5,x2=.5,y2=1,curvature=.5) grid.curve(x2=1,y2=0,x1=.875,y1=.5,curv...

...t is the criteria for adding an intrinsic or a built-in operation? > For example, could the 'frem' instruction be an intrinsic? Could you > remove it from LLVM entirely and make it an external function? What > distinguishes 'frem' from 'sin', 'pow', 'atan2', etc.? The main difference from my perspective between intrinsics and instructions is that intrinsics don't require bitcode format changes. If someone wants an atan2 intrinsic for example, it would be fairly easy, and we wouldn't have to worry very much about collisions with other peo...

..., e1=cbind(0, 0, 1), e2=cbind(1, 0, 0), sides=10 ) # ... rotate cylinder horizontally and scale it len=sqrt(sum(abs(end)*abs(end))) c=scale3d(c,0.1,0.1,len) c=rotate3d(c,-(pi/2),0,1,0) # ... rotation angles theta = atan2(end[2],end[1]) # angle in yx-plane for Z-achses rotation phi = atan2(end[3],sqrt(end[1]^2+end[1]^2)) # angle in zx for Y-achses rotation # ... rotation c=rotate3d(c,phi,0,1,0) # Y-achses rotation c=rotate3d(c, -theta,0,0,1) # Z-achses rotation shade3d(addNormals(c), col=mycol) } open3d() vector...

...orspace.c: In function ?XYZ_to_HLAB?: colorspace.c:170: warning: implicit declaration of function ?sqrt? colorspace.c:170: warning: incompatible implicit declaration of built-in function ?sqrt? colorspace.c: In function ?LAB_to_polarLAB?: colorspace.c:203: warning: implicit declaration of function ?atan2? colorspace.c:203: warning: incompatible implicit declaration of built-in function ?atan2? colorspace.c:207: warning: incompatible implicit declaration of built-in function ?sqrt? colorspace.c: In function ?polarLAB_to_LAB?: colorspace.c:216: warning: implicit declaration of function ?cos? colorspa...

When I run this code from an R-script: ddd = 360 + round ( atan2(-u,-v) / d2r ) print(class(ddd)) print(ddd) ifelse ( ddd>360, ddd-360, ddd ) print(ddd) I get this output: [1] "numeric" [1] 461 213 238 249 251 [1] 461 213 238 249 251 Why does ifelse not change the 461 to 101? I recreated the vector ddd an...

On 28/03/17 15:26, Charles C. Berry wrote: > On Mon, 27 Mar 2017, Rolf Turner wrote: > >> >> From time to time I get myself into a state of bewilderment when using >> apply() by calling it with FUN equal to a function which has an >> "optional" argument named "X". >> >> E.g. >> >> xxx <-

Dear r-helpers, Can one save a dynamic graphic produced by rgl, e.g.: open3d(); x <- sort(rnorm(1000)); y <- rnorm(1000); z <- rnorm(1000) + atan2(x,y); plot3d(x, y, z, col=rainbow(1000), size=2) as a dynamic figure that can be embedded in a pdf? _____________________________ Professor Michael Kubovy University of Virginia Department of Psychology USPS: P.O.Box 400400 Charlottesville, VA 22904-4400 Parcels: Room 102 Gilmer...

...vals for(i in 1 : numberOfIntervals) { distance = i * distance_slice ang_dist = distance / 6371.0 lon_1 = Radians(start_point.Long); lat_1 = Radians(start_point.Lat); lat_2 = Radians(end_point.Lat); lon_diff = Radians(end_point.Long - start_point.Long); # First calculate the bearing bearing = atan2( sin(lon_diff) * cos(lat_2), (cos(lat_1) * sin(lat_2)) - (sin(lat_1) * cos(lat_2) * cos(lon_diff)) ); # Then use the bearing and the start point to find the destination new_lat_rad = asin(sin(lat_1) * cos(ang_dist) + cos(lat_1) * sin(ang_dist) * cos(bearing)); new_lon_rad = lon_1 + atan2( sin(bear...

The following behaviour (in R 0.62.3) is disturbing: > (0+0i)^2 [1] NaN+NaNi Is it deliberate?? Laimonis Kavalieris -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:

The following behaviour (in R 0.62.3) is disturbing: > (0+0i)^2 [1] NaN+NaNi Is it deliberate?? Laimonis Kavalieris -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:

...am of a siso model using the 'bodeplot' command in the control package fail due to error in 'issiso' evaluation... Error in if (issiso(sys)) {: then I try by myself some retro-engineering :) the problem is when I use H <- freqresp(syst, w) mag = 20*log10(abs(H)) phase <- atan2(Im(H), Re(H)) * 180/pi if the order of the system is higher than 2 it is wrong (result will be only between -pi / pi) how to proceed ? for each evaluated point take a derivative and evaluate the order to add the proper number of pi ? Thanks for the help ! Best Fr?d?ric

I am wondering if anyone knows how to change or rotate the default axes on a 3D scatterplot. I would like to change which sides of the cube the 3 axes are displayed on. Many thanks, Leah Gerber [[alternative HTML version deleted]]

...med "X", "FUN", "USE.NAMES", etc. and perhaps make use of R's lexical scoping to avoid having to use many arguments to the function. E.g., instead of sapply(1:5, sin) use sapply(1:5, function(theta) sin(theta)) or instead of myY <- 3 sapply(1:5, atan2, y=myY) use myY <- 3 sapply(1:5, function(x) atan2(myY, x)) Bill Dunlap TIBCO Software wdunlap tibco.com On Tue, Mar 28, 2017 at 2:30 PM, Rolf Turner <r.turner at auckland.ac.nz> wrote: > On 28/03/17 15:26, Charles C. Berry wrote: >> >> On Mon, 27 Mar 2017, Rolf T...

Deemed colleagues I would appreciate your help with a sentence to calculate the linear distance between 2 geographical points (coordinates in UTM). In advance thnks for your attention, -- Ricardo Bandin Llanos rbandin@udec.cl Estudiante - Magíster Cs. m. Pesquerías Universidad de Concepción, Región del Bio-Bio, Chile Celular: (0056-41) 97949957 [[alternative HTML version deleted]]

...riteria for adding an intrinsic or a built-in operation? >> For example, could the 'frem' instruction be an intrinsic? Could you >> remove it from LLVM entirely and make it an external function? What >> distinguishes 'frem' from 'sin', 'pow', 'atan2', etc.? > > The main difference from my perspective between intrinsics and instructions > is that intrinsics don't require bitcode format changes. If someone wants an > atan2 intrinsic for example, it would be fairly easy, and we wouldn't have > to worry very much about c...