Dear list, Does any one know any simple command/function that can be used to sovle a non-linear equation? For example, x=a+bx*exp(-cx).Given a, b and c, to calculate x value. Thanks for help. Yiwu W
Many thanks to Tim for hist prompt reply to my query. His suggestion solved my problem perfectly. Thanks the S+ list. Yiwu Tim Hesterberg <timh@insightful.com> wrote: Use uniroot; you need to write i
Dear list, When I use hist to plot frequency distribution with breaks like hist(x,breaks=breaks), an error message says "Problem in hist(x, breaks = breaks): breaks do not span the range of x. Use tr
Many thanks to Thomas. His suggestion solved my problem . Thanks, Again. Yiwu -- -- __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com
Dear List, Is possible to use polygon add a polygon with transparent color, meaning that the drawings that already exist can still be seen? Many thanks for the help. Yiwu ____________________________
Dear list, I have a pair of data x and y, which have a curve relationship. How can I caculate the derivative of y against x at a certain point of x without knowing the function using S+? Any help is
Dear list members, Yesterday, I asked about how to do numerical derivatives. Bill Shipley and Tim Hesterber suggested to use predict() for smooth.spline(). David Parkhurst suggested using a approxima
Dear list, I tried to use emCgm function. But, when I follow the reference, type "language.pre <- preCgm(language)", an error message says "could not find function preCgm. When I check the object, la
Dear list, Can anyone point me to some documents that show how to use the emCgm function and how to explain its output? Many thanks. Yiwu __________________________________ Do you Yahoo!? Yahoo! Pers
Dear list, I used "data.3d_hist2d (x,y,xbreaks=xbreaks,ybreaks=ybreaks)" to preduce the z (frequency), and then used "persp(x,y,z,xlab="X",....) The 3-D plot seems fine, but I cannot add any labels f
Dear list, Is there any S+ function existing for Horvitz-Thompson estimator, the population total and its variance? Thanks for any help. Yiwu Do you Yahoo!? Yahoo! Mail is new and improved - Check it