search for: remund

I'm more like a caveman when it comes to programming tools. So, with that in mind, is there a way to use readBin in a batch format to read in pieces of a large binary file? Thank you for the consideration of my question. Todd Remund

...For example, if I am interested in counting the number of row vectors in a matrix that are identical to (1,2,3) what would I do? I have tried the identical statement in a loop but this is far too slow. I have a very large matrix and need to avoid loops at all costs. Thanks for any help. Todd Remund

...If K is the gain matrix then the exogenous input would be u_t = -Kx_n, where x_n is the Kalman filter state estimate. These inputs would be entered as such x_t = Ax_t-1 + Bu_t-1 + Ge_t. Is l.SS in the dse1 package the correct parametrization of the Kalman filter? Thank you very much, Todd Remund

...I have A, B, C, and D, now I would like to take the exogenous inputs and simulate the data using the state space model. I know there is a simulate function in the package dse1, but I am unsure as to what type of TSmodel to create to put into it. Could anyone give me some hints? Thanks. Todd Remund [[alternative HTML version deleted]]

...ions run then the window with the 3d plot appears it doesn't show the data inside and immediately shuts down R. The computers have OpenGL on them, but a colleague suspects the configuration of rgl with OpenGL may be the source of the problem. Does anyone know? Thank you for you time. Todd Remund [[alternative HTML version deleted]]

...re not easily done on my PC. What type of hardware do I want? I am leaning toward a single processor, since I have had a slow down with the dual core processors. It seems to me that the threading and clustering will not really help my situation. Does anyone have any suggestions? Thanks Todd Remund [[alternative HTML version deleted]]

...x = list(col=c(1,1,NA,1,1,NA,1,1,1))) I found that the par.box option controls multiple lines in the plot not just one at a time. I have made some attempts at adding lines to the plot to put profile plots on the 'back walls', but don't know where to start. Thank you in advance. Todd Remund [[alternative HTML version deleted]]

I know that there is a function, (spectro3D), that produces the Power Spectrogram. Are there R functions that produce the Frequency Spectrogram and the Phase Spectrogram? Thank you for your time. [[alternative HTML version deleted]]

I have looked through the documentation and have not been able to find a way of using an xlim, ylim, or zlim type option on rgl.surface. I know that persp3d has the option, but seems to only be able to expand the axes not reduce them. Is there anyone who has an idea of how to do this? Thank you for your time. [[alternative HTML version deleted]]

...cture. It doesn't seem like I can compare the two likelihoods or the AIC or BIC to compare the two model since the one model had false convergence. Is this correct? If so, what would be a good approach to comparing the two models to validate the smaller model? Thanks for the time. Todd Remund [[alternative HTML version deleted]]

I would like to ensure that all the text in my plot is in the arial font, like in excel and word. I have been saving my graphics to a file using the png() function, and have tried the postscript() function. In the documentation I have not been able to find a way of changing the family argument to an arial font. Does it exist? How would I go about creating a png or ps graphic using Arial?

I have tried the following code to plot and save many box plots in files. The code works by itself, but does not run in a loop. The error indicates that there is no device. The error is printed below the code. Code: for(i in 1:len) { A = as.numeric(delta[Delta[i,1]]) B = as.numeric(delta[Delta[i,2]]) C = as.numeric(delta[Delta[i,3]]) D = as.numeric(delta[Delta[i,4]]) data