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oub (94) 49 Articles, 45 Replies, 94 Points
Stats Updating... 12/11/2013 11:14:02 PM

Since 4/14/2012 3:11:24 AM, oub has written 49 articles and participated in 45 conversations.
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oub

oub's articles:
 Items(49) /5 Next >> Last >| symbolic variables and complex numbers 9 13 (6/14/2013 8:29:08 AM) comp.soft-sys.matlabHello I hope this time I read the documentation carefully enough. I would like to perform symbolic operations with complex numbers. Here is an example syms phi z=cos(phi)+imag(sin(phi)) abs(z) now ...Uwe symbolic variables + symbolic numerical manipulations? 7 17 (6/12/2013 8:44:09 AM) comp.soft-sys.matlabHello I thought that when using symbolic variables, Matlab treats numbers, which are multiplied by this variables also in a "symbolic" way. Look at the following. A=[1/4, 1/4 - sqrt(3)/6;1/4 + sqrt(3)/...Uwe change the format of a symbolic result 2 14 (6/10/2013 4:31:09 PM) comp.soft-sys.matlabHello I have created a symbolic matrix in the following way. syms z; A=[1/4, 1/4 - sqrt(3)/6;1/4 + sqrt(3)/6, 1/4 ] I=eye(2); m=(I-z*A) m = [ 1-1/4*z, 174177321749...Uwe windows, utf8 comments are not displayed correctly 0 17 (3/4/2013 1:38:08 PM) comp.soft-sys.matlabHello I generated a .m file in Linux with comments in UTF8 coding. In windows by default feature('DefaultCharacterSet') returns windows 1252 when I open the file, the non ascii symbols are not dis...Uwe preview latex in the matlab editor 4 28 (12/9/2012 9:12:15 PM) comp.soft-sys.matlabHello I use most of the time (X)emacs with Eric L matlab-mode. However Xemacs allows me to display math formula which I add in the doc strings of my program, as png. I have screenshots, but unfortunate...Uwe title latex arrays, brackets not shown and no minus sign 0 46 (2/7/2012 2:43:09 PM) comp.soft-sys.matlabHello I am using R 2008, on Linux Kubuntu 10.04. I would like to have the following title: title(' A=\left(\begin{array}{cc} - 2 & 1\\ 1 & - 2 \end{array}\right) \qquad B(t) =\left(\begin{array}{l} 2\sin(t)...Uwe change the form of the ans prompt? 5 35 (1/27/2012 7:00:10 PM) comp.soft-sys.matlabHello when I type >> x=5 the matlab prompt gives me x= 5 I find this very disturbing. I would much prefer to have x=5 all in the same line! is there any variable which I could use to obtain the se...Uwe command fit is gone?! compatiblity? 1 32 (1/10/2012 5:08:08 PM) comp.soft-sys.matlabHello for example in version 2008, the following code worked x=[0 1 2 3 4] y=[1.5 2.5 3.5 5 7.5] [fexp,r]=fit(x',y','c*exp(a*x)') now in version 2010, this commands do not work. is there any solution? coul...Uwe Newton Raphson for nxn system using symbolic toolbox 7 45 (11/1/2011 10:20:29 AM) comp.soft-sys.matlabHello I have already implemented the Newton Raphson method for a system of n equations. However in my implementation I have to give the function and its Jacobian (written as a function) as a input variable. N...Uwe rrefmovie gone? 3 75 (10/5/2011 1:39:30 PM) comp.soft-sys.matlabHello I remember that (old) Matlab versions had the command rrefmovie, which should interactively how rref worked on a given matrix. But now for me in version 2010 this command seems to be gone, is there any...Uwe

oub's replies:
 Items(25) /3 Next >> Last >| convert function files to inline functions? 2 40 (7/5/2009 6:37:01 PM) comp.soft-sys.matlabHello Is it possible to write a function, which is written in a file as an inline or anonymous function. The function in question is for example function [t,x]= euler(f,interval,xo,N) h=(interval(2)-interval(...oub (94) How to execute a function in the same file (where the function is defined) 6 37 (7/5/2009 6:45:03 PM) comp.soft-sys.matlabHello Usually I define functions in a separate file and execute them with appropriate values either from the command line or from a different file. But I am wondering whether it is possible to define a functio...oub (94) how to measure the Efficiency of code. 6 34 (2/16/2010 11:11:52 AM) comp.soft-sys.matlabHello I know about profile but is there any other tool available to measure whether the code is efficient. Clock? Tic? Uwe Brauer ...oub (94) rrefmovie gone? 3 75 (10/5/2011 1:39:30 PM) comp.soft-sys.matlabHello I remember that (old) Matlab versions had the command rrefmovie, which should interactively how rref worked on a given matrix. But now for me in version 2010 this command seems to be gone, is there any...oub (94) Newton Raphson for nxn system using symbolic toolbox 7 45 (11/1/2011 10:20:29 AM) comp.soft-sys.matlabHello I have already implemented the Newton Raphson method for a system of n equations. However in my implementation I have to give the function and its Jacobian (written as a function) as a input variable. N...oub (94) change the form of the ans prompt? 5 35 (1/27/2012 7:00:10 PM) comp.soft-sys.matlabHello when I type >> x=5 the matlab prompt gives me x= 5 I find this very disturbing. I would much prefer to have x=5 all in the same line! is there any variable which I could use to obtain the se...oub (94) preview latex in the matlab editor 4 28 (12/9/2012 9:12:15 PM) comp.soft-sys.matlabHello I use most of the time (X)emacs with Eric L matlab-mode. However Xemacs allows me to display math formula which I add in the doc strings of my program, as png. I have screenshots, but unfortunate...oub (94) change the format of a symbolic result 2 14 (6/10/2013 4:31:09 PM) comp.soft-sys.matlabHello I have created a symbolic matrix in the following way. syms z; A=[1/4, 1/4 - sqrt(3)/6;1/4 + sqrt(3)/6, 1/4 ] I=eye(2); m=(I-z*A) m = [ 1-1/4*z, 174177321749...oub (94) symbolic variables + symbolic numerical manipulations? 7 17 (6/12/2013 8:44:09 AM) comp.soft-sys.matlabHello I thought that when using symbolic variables, Matlab treats numbers, which are multiplied by this variables also in a "symbolic" way. Look at the following. A=[1/4, 1/4 - sqrt(3)/6;1/4 + sqrt(3)/...oub (94) symbolic variables and complex numbers 9 13 (6/14/2013 8:29:08 AM) comp.soft-sys.matlabHello I hope this time I read the documentation carefully enough. I would like to perform symbolic operations with complex numbers. Here is an example syms phi z=cos(phi)+imag(sin(phi)) abs(z) now ...oub (94)