Displaying 20 results from an estimated 70000 matches similar to: "How do u create a "virtual" map?"
2010 Jul 26
1
Creating a map .
Hello.
I would try to explain what I would like to implement so to suggest me what to
try out.
I would like to create an area of X*X km that would be used to "Simulate" an
area map (eg. city's area, suburban area).
-X would be a parameter so I do not want it to be fixed
-In this map I would like to place users (people), thus I do not know in advance
if in one place there would
2004 Jan 17
0
New sounds posted
So, per the discussion last week and generous donations, we have some
new sound files with which to work.
The sounds are located in:
http://www.loligo.com/asterisk/sounds/
For those of you who just want to download the _new_ sounds, please fetch:
http://www.loligo.com/asterisk/sounds/20040117.newsounds.tar
All of the sounds in that tarball are also in the main ../sounds/
directory in
2009 Jul 31
2
Preparing for multi-core CPUs and parallel processing applications
Hello
I am fortunate (or in really big trouble) in that the research group I work
with will soon be receiving several high end dual quad core machines. We
will use the Ubuntu OS on these. We intend to use this cluster for some
extensive modeling applications. Our programming guru has demonstrated the
ability to link much simpler machines to share CPUs and we purchased the
new ones to take
2013 Apr 26
1
[newbie] how to find and combine geographic maps with particular features?
SUMMARY:
Specific problem: I'm regridding biomass-burning emissions from a
global/unprojected inventory to a regional projection (LCC over North
America). I need to have boundaries for Canada, Mexico, and US
(including US states), but also Caribbean and Atlantic nations
(notably the Bahamas). I would also like to add Canadian provinces and
Mexican states. How to put these together?
General
2010 Apr 19
1
densCols: what are the computed densities and how to create a legend
Hi,
I'm using the densCols function for a scatterplot and cannot figure out 1) how to extract the computed densities, and 2) how to create a legend based that represents the upper and lower ranges of the densities.
For example:
movers.den <- densCols(move$x, move$y)
table(movers.den)
#08306B #083775 #083B7C #083D7E #3989C1 #3F8FC4
28 22 101 25
2006 Oct 08
1
Probability of exceedance function question
I'm trying to calculate a cumulative area distribution (graph) of drainage
areas. This is defined as P(A > A*). Simple in principle. I can do this in
excel, with "COUNTIF", which will count the number of cells in the row
"area" that have area A, then determine, for each cell in the row "area, how
many cells exceede that area, then dividing that number by the total
2011 Nov 18
1
Delete Rows Dynamically Within a Loop
Ok guys, as requested, I will add more info so that you understand why a
simple vector operation is not possible. It's not easy to explain in few
words but let's see. I have a huge amount of points over a 2D space.
I divide my space in a grid with a given resolution,say, 100m. The main loop
that I am not sure if it's mandatory or not (any alternative is welcomed) is
to go through EACH
2010 Jul 18
1
Reading files with varying number of columns
Dear R list,
I am trying to read files with a varying number of columns and can't figure out
how to get them in the proper format.? Some rows have five value and some have
seven.? Is there a way to read them in so that two empty columns are added to
every row that has only five values?? An example of the data follows.? Thanks!?
Tim
>46,B,00301,2004-02-03,11:59:16
2012 Aug 11
3
Problem when creating matrix of values based on covariance matrix
Hi,
I want to simulate a data set with similar covariance structure as my
observed data, and have calculated a covariance matrix (dimensions
8368*8368). So far I've tried two approaches to simulating data:
rmvnorm from the mvtnorm package, and by using the Cholesky
decomposition (http://www.cerebralmastication.com/2010/09/cholesk-post-on-correlated-random-normal-generation/).
The problem is
2013 Jul 07
0
bcmxcp: Now supports more ups variables, help needed on testing on hardware
Hi
I have now done some work to clean up the bcmxcp driver somewhat, and
then addede support for a number of more
ups variables, so if you have hardware supporting it, you should get
more output from "upsc" command, for example.
I do not have hardware to test this, so I hope someone do have hardware
and are willing to test.
The changes should be ok, it is just add new mappings from
2012 Mar 26
1
Won't draw windows without virtual desktop
No (different) errors; Only window borders and message-boxes get drawn without emulating virtual desktop.
By the way, the largest VD that gets drawn is 1900x1100 (native resolution is 1920x1200). If I create a VD with dimensions of 1910x1110, then same problem occurs.
2010 Sep 09
2
See what is inside a matrix
Hello everyone.. Is there any graphical tool to help me see what is inside a
matrix? I have 100x100 dimensions matrix and as you already know as it does not
fit on my screen R splits it into pieces.
I would like to thank you in advance for your help
Best Regards
Alex
[[alternative HTML version deleted]]
2011 Nov 24
1
readGDAL or raster for reading bit map files
Dear all,
I have asked yesterday of how I can read a simple bitmap file in R cran.
I was suggest to use either readGDAL or raster for loading my bitmap
a. I have done it with readGDAL like
store<-readGDAL(fname='lena256.bmp')
and it works,... but it converts my matrix-like notion of a bitmap to a large vector
b. Raster also returns a class that I can not understand.
So 1,
2007 Apr 08
2
Plot symbols dimensions
I am writing some code to obtain publication-like plots (like the ones can be obtained with
SigmaPlot). I am not able to find the dimensions of a point. Parameters like cex make you able
to make it bigger or smaller but I need to know the exact dimension (in relative coordinates :
if my plot is 640x480 a dot plotted with cex=1.5 will be...)
Massimo Cressoni
2005 Jun 20
2
Fwd: How to sample from a linear mixed model
Thanks. I wonder if there is a general way of extracting var(u) and var(e), which would be needed to simulate u and e. Clearly, one can get the estimated parameters, but is there a clever way of 'setting up' the matrices??
Best
S??ren
On 6/19/05, S??ren H??jsgaard <Soren.Hojsgaard at agrsci.dk> wrote:
> I would like to draw a sample from a linear mixed model y=Xb+Zu+e which has
2011 Jun 09
0
(no subject)
> #
>> # Generate the figures (on screen)
>> #
>> # Image generation - function definition
>> pic_onscr<-function(matrix, title, cex_val=1)
> + {x11() + par(mgp=c(5,2,0), # axis margins + # (title,
> labels, line) + mar=c(7,4,4,2), # plot margins (b,l,t,r) +
> las=1) # horizontal labels + plot(matrix, # data to plot +
>
2020 Aug 29
20
[Bug 1461] New: [TRACKER] Issues concerning sets, maps and meters
https://bugzilla.netfilter.org/show_bug.cgi?id=1461
Bug ID: 1461
Summary: [TRACKER] Issues concerning sets, maps and meters
Product: nftables
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P5
Component: nft
Assignee: pablo at netfilter.org
2009 Apr 13
4
Physical Units in Calculations
Back in 2005 I had been doing most of my work in Mathcad for over 10 years.
For a number of reasons I decided to switch over to R. After much effort and
help from you folks I am finally "thinking" in R rather than thinking in
Mathcad and trying to translating to R. Anyway, the only task I still use
Mathcad for is calculations that involve physical quantities and units. For
example, in
2010 Dec 02
4
2D Random walk
I've wrote some code to simulate a random walk in 2 dimensions on a lattice.
Basically I want to add something in to make it plot it point by point so
you can see what is going on.
Heres my code for the random walk in 2d
RW2D<-function(N)
{
i<-0
xdir<-0
ydir<-0
xpos<-vector()
xpos[1]<-xdir
ypos<-vector()
ypos[1]<-ydir
for (i in 1:N-1)
2011 Dec 27
2
How to create a matrix with 3 dimensions from several 2 dimensional matrice?
Hi every one,
How is it possible to create a matrix with 3 dimensions from several 2
dimensional matrice?
Is it possible that each of "elementary/building block" matrices could be
called by its corresponding original name?
Thanks alot.
--
View this message in context: