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By using Sci-lab I need to draw triangle cicrle and rectangular (separately, of course). the most difficult for me is triangle, I have no idea how to plot them
Plotting is rather trivial. See the plot command reference.
There are shorter ways, but for easiest understanding just plot the three sides as three lines.
For instance if you have a triangle with the corner coordinates at (x,y) = [0,0],[5,10],[10,0]. Plot three lines between these points.
plot([0,5],[0,10])
plot([5,10],[10,0])
plot([0,10],[0,0])
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I want to run an estimation assuming that my variables are distributed according to the Dirichlet distribution. To do so, I need to use the cdf function. For all the distributions in R, there are the respective r,p and d functions that produce random variables, pdf and cdf.
Nevertheless, for the Dirichlet, I can only find the random number generator and the pdf.
Is there a similar package for R that gives the cdf?
Many thanks,
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I want to find a list of symbols specials in R, for exemple:
\042
\044
\136
\305
\341
Where is it, please?
Acctualy, i want find the code of symbol ∈ .
I'm unfamiliar with R, but this website helps me with escape symbols. Your posted character, ∈, is \u2208 .
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How to Calculate Circumference [Perimeter] of a Pipe [Cylinder shape] with Specified Pitch?
Actually I want to find the length of thread to wind a pipe.
Is there any formula or formula name I can refer?
What you are looking for is the perimeter of an ellipse which is rather an ugly thing (see: http://www.mathsisfun.com/geometry/ellipse-perimeter.html). Your minor axis is the diameter of the pipe. The major axis is the hypotenuse of the right triangle formed from 1/2 of your pitch.
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Is there a package in R that allows me to plot multiply time series next to each other 3D?
Like in the following examples:
http://farm6.staticflickr.com/5142/5619005462_5eab3c8cdd_b.jpg
http://synoptic.weaintplastic.com/
Thanks
Have you checked out chartSeries3d0 from the quantmod package?
Here's an example I found on quantmod.com:
library(quantmod)
source("http://www.quantmod.com/examples/chartSeries3d/chartSeries3d.alpha.R")
getSymbols("DGS1MO;DGS3MO;DGS6MO;DGS1;DGS2;DGS3;DGS5;DGS7;DGS10;DGS20;DGS30",src="FRED")
TR <- merge(DGS1MO,DGS3MO,DGS6MO,DGS1,DGS2,DGS3,DGS5,DGS7,DGS10,DGS20,DGS30, all=FALSE)
colnames(TR) <- c("1mo","3mo","6mo","1yr","2yr","3yr","5yr","7yr","10yr","20yr","30yr")
TR <- na.locf(TR)
chartSeries3d0(TR["2011"])
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Is there any scripting language function (like in python or bash) that samples from a zipf-like distribution, for exponent 0<a<=1. Zipf-like distribution p(a) can be found, here.
PS: I am aware of existence of numpy function that can generate zipf samples, but it's only for a >1.