search for: shengzh

Hello, In the Unix environment, I open a window by x11(). May I specify the position of this window by specifying the position of the top left of the window as in Windows environment? Or some other parameters can be used to do that? Thank you, Shengzhe

Hello, When I open a new device by "windows()", how to hide the 3 buttons on the top-right corner of this window, since I want to make these buttons not work, and the window can be closed only by "dev.off()" or "graphics.off()". Thank you, Shengzhe

...total variance in X). Because the trainSet has been scaled before training, I think Xtotvar should be equal to 14, but unexpectedly Xtotvar = 16562, and the values of Xvar are also very big and sum of Xvar = 16562. Why does this type of result occur? for the reason of kernel algorithm? Thank you, Shengzhe

Hello, I wish to plot some figures in a window in turn, but the size of these figures is different, so how can I change the size of the window by resetting the parameters before each plotting? Thank you, Shengzhe

...and device 5. Normally using "dev.set()" to specify the current active window, if there is a way to specify the active window by mouse click? When I click device 3, device 3 becomes active (shown on device header), and when I click device 4, device 4 becomes active, so on.... Thank you, Shengzhe

...OK <- function(){print("OK")} onCancel <- function(){print("Cancel")} OK.but <- tkbutton(tt, text=" OK ", command=onOK) Cancel.but <- tkbutton(tt, text="Cancel",command=onCancel) tkgrid(OK.but,Cancel.but) tkevent.generate(tt, onOK) Thank you, Shengzhe

...ely. Which R functions could do this kind of test? I just find some functions could do for one dimension, but no for multidimension. Some one suggests bartlett.test, but it seems just works for one dimension. Do you know which ones could do that, or I have to do R programming by myself? Thank you, Shengzhe

...colNumber"). Is any function for that? Third, use "Symbols" to plot the circle on these small pictures, but seems it can't do that. Also, I don't know how to adjust the thickness and radius of the circle plotted by "Symbols". Please give me some ideas! Thank you, Shengzhe

...O1 O2 O3", O1, O2 and O3 are the names of three objects. How to split it into a vector or three new objects, and obtain their content? I try to use strsplit to do that, but seems it doesn't work like that. And what is "<<-" for? the same as "<-"? Thank you, Shengzhe

Hi there, I am a master student in Denmark, and apply R to analyze the drug data. I use the function 'lda' to obtain a linear discriminant object, and then wish to use 'plot.lda' to do the plot on this object like below. drug.lda <- lda(Inhibition ~ NET_CHARGE + PKA_1 + MW + MLOGP, data = drug.class, method = "moment") plot.lda(drug.lda,