Displaying 3 results from an estimated 3 matches for "arango".
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rango
2011 Oct 12
4
plot probability density function (pdf)
I have 2 series of variables, I want to plot the probability density function
of these 2 variabels (i.e. two curves in one graph), I just want to compare
these two variable distribution.
what should I do?
can I use ggplot2 package?
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2011 Oct 12
2
Minimization/Optimization under functional constraints
Hi,
I hope someone can help me with the following issue.
I need find the minimum beta that satisfies the following:
inf{beta>0 | f(x+beta*f(x))*f(x)<=0}
where f() is a function and x is a sample statistic.
Functions such as "nlminb" and "constrOptim" minimize a function and output
the parameter (under parameter constraints). I need to minimize the
parameter (also
2011 Nov 17
3
R help
Hello:
I have some trouble making a prediction from an AR(p) model. After I have the AR(p) model fitted , I want to use a new data set to make predictions.
But I get the error: Error in newdata - object$x.mean : non-numeric argument to binary operator.
A small version of my original data looks like:
X1
X2
X3
X4
40813.65
1
10
41.86755
40813.65
1
8
41.86755
40813.66
1
8
41.86755