search for: azimuth

Hello I will make an interpolation of data which represents azimuth direction ( angle from north in clockwise direction) values. But there is a problem. Say, for instance, while 1 and 359 indicate somewhat same direction, interpolation puts values in the range from 1 to 359. What can I do to solve the problem ? Anything you offer ? thanks in advance Ahmet T...

...J. Epidemiol. Commun. H. 54, 367-374. ++++++++++++++++++++++++++++++ + A specific example from my research:+ ++++++++++++++++++++++++++++++ Cold stressed cows maximize surface area exposed to the sun. Therefore on cold sunny days they will increasingly orient to a 90o angle to the sun's azimuth. We want to build a regression model orientation vs. temperature and wind, but cows in a group all walk (and therefore orient) more or less in the same direction. Methods A small herd of twelve cows (ID) was observed in the field, and individual orientations (orid) noted (compass; 0o = north...

...side of each sector interval be open, to include values such as my 45 in the example? Also, why does the angle 180 in my input apparently not result in a count of 1 for the output for 180? The $data$theta value of 180 refers to a sector centered at 180 whose angle is 90, correct? library(oce) # azimuths <- c(22.5, 45, 90, 180, 270) # 0 and 360=north, 90=east, 180=south, 270=west angles <- c(67.5, 45, 0, 270, 180) # geometric equivalents of azimuths radians <- angles * pi /180 x <- round(cos(radians), 6) y <- round(sin(radians), 6) w <- as.windrose(x, y, dtheta = 90) # make a w...

Hi all, I would like to know a way of calculating the distance between 2 points when I already have the longitude and latitude of the points. For example : Point 1 : 52? 9'54.00"N 4?25'8.40"E Point 2 : 52?27'46.80"N 4?33'18.00"E Distance between point 1 and point in km .... Is there any functions already available for this ? Any help will be much

...this using 1. a spherical-to-Cartesian conversion like pracma::sph2cart(tpr) http://cran.r-project.org/web/packages/pracma/ 2. a geographical-to-spherical conversion. This seems to involve (in roughly increasing order of difficulty or error-prone-ness) * converting longitude (units=?) to an azimuthal angle (units=rad) * converting latitude (units=?) to a polar angle (aka inclination) (units=rad) * converting elevation (usually, distance above mean sea level) to radial distance (i.e., distance from earth center). Ideally this should be done using a user-chosen coordinate reference syst...

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...- do we have any access to _other_ header metadata which might allow us to offer a simpler channel map (or are we limited to Mapping = 1?) Lastly, and optionally: - we would ideally like to include a "producer's suggestion for best stereo decode". This would be in the form of angle/azimuth for the 3 axis ... and would act as a 'hint' for ambisonic aware players to offer a stereo decode recommended by the producer. (this kind of thing is really leveraging the power of ambisonics). We originally thought that this could be done in the comment headers, but it has been suggested...

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

...th a projection, get locations with locator(), and then inverse-project them to get back to lat-long coordinates. That's all the good news. The bad news is that there's a few problems here and there, mainly related to lines that cross the +180/-180 boundary and to certain projections - an azimuthal projection (i.e. as you would see the earth from space) of the world map doesn't do hidden-line removal of the far side, it just crashes! So I'm looking for interested parties to have a play with the code. Preferably people with some experience of the S/Splus maps library, or anyone wi...

...m^2 or 1.13m radius, 4m^2), these are the label data points plotted below, later to have the 1m^2 or 4m^2 rplt outline added. Later, each individual tree will be plotted across each oplt in the views below and each rplt in expanded views. All locations (rplt centers, tree positions) are recorded as azimuth and distance from their respective plot centers, hence my inclination to use polar coordinates. Thanx, DaveT. ************************************* Silviculture Data Analyst Ontario Forest Research Institute Ontario Ministry of Natural Resources david.john.thompson at ontario.ca http://ontario.ca/...

Hello R-helpers, What I have: I am working with vectors not matrice: #Basic equations A <-c(-20,-9,-2) x <-c(0.17,0.22,0.61) B <- crossprod(A,x) # R matrix multiplication works with vectors A%*%x==B # Is true... Question: If x is unknown and A and B are known, how do I solve for x in R? solve(A,B) won't work because A is not a square matrix solve(A,B) Error in solve.default(A,

...oad.rb:84 I''ve got all kinds of crazy stuff going on in my virtual host record. Individual RBX and RHTML files can be made to work but Rails seems like it always throws some kind of error. Here''s my virtual host record: <VirtualHost 65.172.243.112:80> ServerAdmin day@azimuthinternet.com DocumentRoot /srv/www/htdocs/bget.org/www ServerName www.bget.org ServerAlias bget.org *.bget.org ErrorLog /var/log/apache2/error_log CustomLog /var/log/apache2/access_log common <IfModule mod_dir.c> DirectoryIndex index.html index.htm index.php ind...

...arriers to ongoing compile-time increases, c) gives the improvements. Michael’s work on SCEV [1] is an example of this. This (and similar work by others, eg. the refs in this mail thread) shows that clang can get ahead of the game and improve compile-time significantly. It is now time to shoot the azimuth and see where future improvements can come from and where they can take clang compile-time. Some ideas are in Michael’s mail thread, but with additional analysis and insight including from compiling clang itself more opportunities should become apparent. Expect most of the issues to take many weeks...

Hi, Could any one point me to the projection, and parameters if necessary, that would show each country/continent with it's area accurately refelcted on the plot? E.g. aitoff vs. albers vs. bonne vs. cylequalearea vs. guyou - they don't all look the same to mee but some of the documentations suggests they are equal area? Of course this isn't my field, so I am largely guessing and am

...entation of the function twiddle to get started. * VecStatGraphs2D (1.1) Juan Carlos Ruiz Cuetos http://crantastic.org/packages/VecStatGraphs2D This package performs a 2D statistical analysis, both numerical and graphic, of a set of vectors. Since a vector has two components (module and azimuth) vector analysis is performed in three stages: modules are analyzed by means of linear statistics, azimuths are analyzed by circular statistics, and the joint analysis of modules and azimuths is done using density maps that allow detecting another distribution properties (I.e. anisotropy) a...

Hi, It's been a while since I sent the last compile time report [1], where it was shown that LLVM was getting slower over time. But now I'm happy to bring some good news: finally, LLVM is getting faster, not slower :) *** Current status *** Many areas of LLVM have been examined and improved since then: InstCombine, SCEV, APInt implementation, and that resulted in almost 10% improvement