Displaying 20 results from an estimated 8000 matches similar to: "Fw: solving a linear equation"
2009 Nov 04
2
solving a linear equation
Hi all,
I've a linear equation of the form:
0.95=2 ( [3+ln(x/3)]^-13  + 4 [3+2ln(x/3)]^-13  + [3+4ln(x/3)]^-13 )
and I want to solve it for x, can I do this using R? 
Thanks in advance.
Maram.
      
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2016 Nov 28
2
Strange behavior when using progress bar (Fwd: Re: [R] The code itself disappears after starting to execute the for loop)
I first answered to the email below in r-help, but as I did not see any 
response, and it looks like a bug/unwanted behavior, I am also posting 
here. I have observed this in RGui, whereas it seems not to happen in 
RStudio.
Similar to OP, I sometimes have a problem with functions using the 
progress bar. Frequently, the console is cleared after x iterations when 
the progress bar is called in a
2009 Oct 14
2
axis label
Hi all,
I want the y-axis label to be ( in symbols)
g(sigma given alpha)
where given is the conditional sign.
I've tried
ylab=expression(g(sigma|alpha)))
but it gave me
g(|(sigma,alpha))
where the sigma and alpha are in greek but the conditional sign is misplaced (before the bracket)
Any help would be appreciated.
Maram.
      
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2016 Nov 03
2
The code itself disappears after starting to execute the for loop
Hi all,
I've a question concerning the R 3.3.1 version. I have a long code that I used to run on versions earlier to the 3.3.1 version, and when I copied the code to the R console, I can still see the code while the loop is executing , along with the output printed after each iteration of the loop. 
Now, on the 3.3.1 version, after I copy the code to the console, it disappears and I only see
2016 Nov 03
2
The code itself disappears after starting to execute the for loop
Hi all,
I've a question concerning the R 3.3.1 version. I have a long code that I used to run on versions earlier to the 3.3.1 version, and when I copied the code to the R console, I can still see the code while the loop is executing , along with the output printed after each iteration of the loop. 
Now, on the 3.3.1 version, after I copy the code to the console, it disappears and I only see
2009 Aug 19
1
Hist & kernel density estimates
Dear All,
Attached are the codes of a histogram & a kernel density estimate and the output they produced.
In fact the variable q is a vector of 1000 simulated values; that is I generated 1000 samples from the pareto distribution, from each sample I calculated the value of q ( a certain fn in the sample observations), and thus I was left with 1000 values of q and I don't know the
2020 Oct 06
0
Solving a simple linear equation using uniroot give error object 'x' not found
On 06/10/2020 11:00 a.m., Sorkin, John wrote:
> Colleagues,
> I am trying to learn to use uniroot to solve a simple linear equation. I define the function, prove the function and a call to the function works. When I try to use uniroot to solve the equation I get an error message,
> Error in yfu n(x,10,20) : object 'x' not found.
> 
> I hope someone can tell we how I can fix
2020 Oct 06
4
Solving a simple linear equation using uniroot give error object 'x' not found
Colleagues,
I am trying to learn to use uniroot to solve a simple linear equation. I define the function, prove the function and a call to the function works. When I try to use uniroot to solve the equation I get an error message,
Error in yfu n(x,10,20) : object 'x' not found.
I hope someone can tell we how I can fix the problem
 
2009 Oct 13
3
cdf
Dear all,
I have the cdf of the following power fuction distribution:
F(y)=(y/350)^a               ,0<y<350,
where " a " is some parameter with range a>0.
I want to use it as the argument of the discretize function of the actuar package.
So I think I need to define this function to R so that if I entered a=1, I get the following
F(y)=(y/350)
and if I entered a=4.5, I get the
2009 Sep 07
2
finding the minimum value
Hi all,
I'm using a certain  procedure to calculate the value of some variable(Bayes risk),B.
So I got the values B1, B2, ........, B1000, each under certain input values and using a long procedure.
Now, I want to put the values I got in a nummerical vector and find their minimum value. I think c( ) should work.For example if I have only 10 values I could have used
2009 Aug 24
2
calculating probability
Hi all,
I've a trivial question. If (q) is a continous variable,actually a vector of 1000 values. how to calculate the probability that q is greater than a specific value, i.e. P(q>45)??
Thanks
Maram
      
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2009 Sep 06
1
using histogram to find cdf
Dear all,
How can I use the histogram density estimate (hist) to find the value of the cdf at a certain point?
Thanks
Maram
      
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2009 Jul 12
0
(no subject)
I have no idea to be honest. I have never used the package, I simply did a search for it.  Hopefully a more experienced user can help
--- On Sun, 7/12/09, maram salem <marammagdysalem at yahoo.com> wrote:
> From: maram salem <marammagdysalem at yahoo.com>
> Subject: Re: [R] (no subject)
> To: "John Kane" <jrkrideau at yahoo.ca>
> Received: Sunday, July 12,
2009 Aug 25
1
converting a matrix into a fn
Dear All,
I have a matrix m of the form
 m
            [,1]             [,2]
  [1,]  9072.302 0.00000004462366
  [2,]  9086.811 0.00000005628169
  [3,]  9101.320 0.00000007126347
  [4,]  9115.830 0.00000008986976
  [5,]  9130.339 0.00000011260000
  [6,]  9144.848 0.00000014018405
  [7,]  9159.357 0.00000017344229
  [8,]  9173.866 0.00000021363563
  [9,]  9188.375 0.00000026389996
 [10,]  9202.884
2016 Dec 07
0
Strange behavior when using progress bar (Fwd: Re: [R] The code itself disappears after starting to execute the for loop)
I would like to ask once more if this is reproducible also for others? 
If yes, should I submit it as a bug-report?
Best,
Jon
On 11/28/2016 11:26 AM, Jon Skoien wrote:
> I first answered to the email below in r-help, but as I did not see 
> any response, and it looks like a bug/unwanted behavior, I am also 
> posting here. I have observed this in RGui, whereas it seems not to 
>
2009 Jun 09
1
Problem : solving a equation with R , fail with uniroot function
Hi ,
I would like to know if a R function have the same behaviour than the matlab
solve function.
I tried something with uniroot but I have some problems:
The equation I need to solve is :
exp(c0-r0)*(bb0+x)*(bb1-x)=(bb0+x+1)(bb1-x-1)
So I tried this:
STEP 1: my function test
 test <- function(x,bb0=-3,bb1=5,c0=2,r0=0) {
+ ((exp(c0-r0)*(bb0+x)*(bb1-x))/((bb0+x+1)(bb1-x-1))-1)}
STEP 2:
>
2009 Jul 12
1
Fw: (no subject)
Dear group,
Thank u so much 4 ur help. I've tried the link,
http://finzi.psych.upenn.edu/R/library/quantreg/html/akj.html
for adaptive kernel density estimation.
But since I'm an R beginer and the topic of adaptive estimation is new for me, i still can't figure out some of the arguments of
akj(x, z =, p =, h = -1, alpha = 0.5, kappa = 0.9, iker1 = 0)
I've a vector of 1000 values
2012 Jul 26
3
Solving quadratic equation in R
Hi there,
I would like to solve a simple equation in R
a^2 - a = 8.313
There is no real solution to this problem but I would like to get an
approximate numerical solution. Can someone suggest how I can set this up?
Thanks in advance,
Diviya
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2008 May 24
1
Solving 100th order equation
Hi R,
 
I have a 100th order equation for which I need to solve the value for x. Is there a package to do this?
 
For example my equation is:
 
(x^100 )- (2*x^99) +(10*x^50)+.............. +(6*x ) = 4000
 
I have only one unknown value and that is x. How do I solve for this?
 
 
 
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510 
Bangalore *
2009 Aug 12
3
axis scale
Dear All,
I'm trying to plot a histogram (with the relative frequencies as the Y axis), But the scale of the y axis is given by
0e+00, 1e-04, 2e-04, 3e-04,.........
Now, I have 2 questions
1- Does (1e-04=0.01831563)?
2- If this true,how can i change the given scale to (0.01,0.03,0.05,0.07,0.09)?
      
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