http://blog.gmane.org/gmane.comp.gnu.octave.general hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.gnu.octave.general/41713 <pre>Hi, I am (new to) running Octave 3.6.1 on Windows 7. Various operations seem to take an extraordinarily long time (at least versus R, with which I am more familiar) and I am wondering if this is normal or something wrong with my installation. I installed Octave without changing any defaults, so I don't think I have messed anything up. Some examples/symptoms: 1. Typing in 'path' takes 8 seconds to return a response. The list only contains items in the 'C:\Program Files\Octave-3.6.1' subfolders, so it does not seem to be searching my whole machine for folders (I attach the full list at the end of this post) so not clear why it takes so long? 2. I have a comma separated text data file with 100 lines in it and 3 numbers per line. The data is loaded using data = load('ex2data1.txt'); X = data(:, [1, 2]); y = data(:, 3); After doing the above and then typing in X to see the data values, it takes 10 seconds to start displaying them - every time I do it! I assumed Octave would store this data in RAM and o</pre> zos474 2012-05-26T06:57:46 http://comments.gmane.org/gmane.comp.gnu.octave.general/41707 <pre>Hi, I'd like to run some Matlab code with package folders (folders like '+packageName') http://www.mathworks.de/help/techdoc/matlab_oop/brfynt_-1.html It seems that this doesn't work in octave 3.2.4. Is there a workarround or description about this issue, I couldn't find anything about this via google? Thanks Jakob </pre> Jakob Lombacher 2012-05-25T08:39:53 http://comments.gmane.org/gmane.comp.gnu.octave.general/41687 <pre>I have been following Ben_Zen's blog and thought I'd point him to this variant of LB-SCGL: Hi Ben, Thought I'd pass this along, a variant of Lomb-Scargle, by M.Zechmeister at the Max-Planck Institute.  The downloadable .pdf can be found here: http://arxiv.org/abs/0901.2573 it's also sprinkled around the web if you search on his name, On another site that I have lost track of, but have partially printed off, he offers to give away the source code.  His email is listed as zechmeister&lt; at &gt;mpia.de, assuming it hasn't changed...He seems very willing to help with implementations of it... He makes these claims for it: "The Lomb-Scargle periodogram is a common tool in the frequency analysis of unequally spaced data equivalent to least-squares fitting of sine waves. We give an analytic solution for the generalisation to a full sine wave fit, including an offset and weights ($\chi^{2}$ fitting). Compared to the Lomb-Scargle periodogram, the generalisation is superior as it provides more accurate frequencies, is l</pre> Mark Lytle 2012-05-24T13:06:27 http://comments.gmane.org/gmane.comp.gnu.octave.general/41680 <pre>Has anyone else seen this bug with setfield? It seems to work properly, but when I check if the field is set with isfield, it does not work. I'm using the brew install of GNU Octave, version 3.6.1 octave&gt; s = struct() _______________________________________________ Help-octave mailing list Help-octave&lt; at &gt;octave.org https://mailman.cae.wisc.edu/listinfo/help-octave </pre> Jacob Eggers 2012-05-22T15:58:34 http://comments.gmane.org/gmane.comp.gnu.octave.general/41679 <pre>I'm running GNU Octave, version 3.6.1 on Cygwin on Windows 7 and need to be able to use the xlsread function. As such, I've installed io-1.0.18, but when attempting to install the windows-1.1.0 package, I get some errors: Makefile:27: recipe for target `__COM__.oct' failed make: Leaving directory `/tmp/oct-28a03c.2/Windows/src' error: called from `pkg&gt;configure_make' in file /usr/share/octave/3.6.1/m/pkg/pkg.m near line 1385, column 9 error: called from: error: /usr/share/octave/3.6.1/m/pkg/pkg.m at line 827, column 5 error: /usr/share/octave/3.6.1/m/pkg/pkg.m at line 383, column 9 As a result, the xlsread does not yet function. Any ideas would be much appreciated. Thanks, -- View this message in context: http://octave.1599824.n4.nabble.com/Windows-1-1-0-tar-gz-tp4630115.html Sent from the Octave - General mailing list archive at Nabble.com. </pre> Rtupper 2012-05-23T21:04:54 http://comments.gmane.org/gmane.comp.gnu.octave.general/41676 <pre>Hi! I am pretty new to Octave and at the moment I have a problem that I cannot find a solution to. Basically I am working with a matrix that is three columns wide and is over a thousand rows long. What I need to do is to extract the rows that contain numbers that are either x &lt; 0 or x &gt; 1 and write those intact to a new *.txt file. Thank you in advance for any help! Knof -- View this message in context: http://octave.1599824.n4.nabble.com/Extracting-matrix-rows-that-meet-a-condition-tp4630112.html Sent from the Octave - General mailing list archive at Nabble.com. </pre> Knof 2012-05-23T19:51:17 http://comments.gmane.org/gmane.comp.gnu.octave.general/41656 <pre>Hello, I've tried (for no good reason) to run a recently shown in this list example, and here's what I see: " octave:1&gt; sys1=tf(1,[1 3 2]) error: no such file, `/mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/packages/dataframe-0.9.1/&lt; at &gt;dataframe/size.m' error: evaluating argument list element number 1 error: called from: error:   /mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/3.6.1/m/general/private/__isequal__.m at line 70, column 9 error:   /mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/3.6.1/m/general/isequal.m at line 31, column 10 error:   /mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/packages/control-2.3.50/__labels__.m at line 31, column 3 error:   /mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/packages/control-2.3.50/&lt; at &gt;tf/display.m at line 30, column 16 octave:1&gt; system("ls -ltr /mnt/sdb8/sergei/AFSWD_debug/20120424/octave-3.6.1/share/octave/packages/dataframe-0.9.1/&lt; at &gt;dataframe/size.m"); -rw------- 1 qemu us</pre> Sergei Steshenko 2012-05-22T20:29:18 http://comments.gmane.org/gmane.comp.gnu.octave.general/41645 <pre>Could someone try this with 3.7.0+ I am finding a crash with sys1=tf(1,[1 3 2]) You will need the control pkg. </pre> Doug Stewart 2012-05-22T18:14:54 http://comments.gmane.org/gmane.comp.gnu.octave.general/41642 <pre>Hi, This is a beginner question, but can't seem to figure this out. Please consider: t = [-1:0.1:1;] f = ( 1 + t ) / ( 1 - t); plot (t, f); I'd like to see the behavior of f function regarding t values, but all I get is some point. How should I do this? Luis -- View this message in context: http://octave.1599824.n4.nabble.com/How-to-print-this-function-tp4630076.html Sent from the Octave - General mailing list archive at Nabble.com. </pre> lib1 2012-05-22T16:58:36 http://comments.gmane.org/gmane.comp.gnu.octave.general/41629 <pre>Suppose a cell array like: arr = {10, int32(15), 'Txt'; '', 25, true; NaN, 'String', single(100)} How can all numeric values efficiently (w/o for loops etc.) be converted to double, leaving the other cell array contents untouched? Getting at something like "arr(find (cellfun ("isnumeric", [arr])))" is easy enough, but the follow-up is a hazy to me. Thanks, Philip </pre> Philip Nienhuis 2012-05-21T21:43:36 http://comments.gmane.org/gmane.comp.gnu.octave.general/41618 <pre>the current default work directory in Octave is "C:\Users\zhiming" in my PC, and everytime i have to manually change it to 'E:\Work\Octave' after lauching Octave. So how can i make this tiring work automatically done, in other words, make "E:\Work\Octave' as Octave's default work directory? -- View this message in context: http://octave.1599824.n4.nabble.com/set-the-default-work-directory-when-lauching-Octave-tp4630010.html Sent from the Octave - General mailing list archive at Nabble.com. </pre> Zhiming 2012-05-21T17:56:24 http://comments.gmane.org/gmane.comp.gnu.octave.general/41617 <pre>Anybody can help to make the algorithms? I could not understand the program completely, and will soon have to take them. Programs that need to take: 1) The iterative method (simple or Seidel iteration) 2) The method of least squares (inconsistent system) 3) The nonlinear equations (the dichotomy, the method of chords, tangents to choose from) 4) Interpolation or approximation of (any of these methods) -- View this message in context: http://octave.1599824.n4.nabble.com/Mathematics-tp4629982.html Sent from the Octave - General mailing list archive at Nabble.com. </pre> misha 2012-05-21T10:32:29 http://comments.gmane.org/gmane.comp.gnu.octave.general/41615 <pre>Hi, I've noticed that when I get thrown into debug mode (e.g. by pressing Control-C while a pause is active) there is no readline support (e.g. up-arrow and control-R for command history access and TAB completion don't work anymore). Also, if I press control-C a couple of times more, octave aborts with panic: Interrupt -- stopping myself... attempting to save variables to `octave-core'... save to `octave-core' complete which seems rather silly. Is this default behavior or an anomaly on my side? Stable branch built from source, 64-bit CPU, debug_on_interrupt (true); set in octaverc. </pre> Dan Muresan 2012-05-21T15:06:09 http://comments.gmane.org/gmane.comp.gnu.octave.general/41611 <pre>Hello, this is regarding functionality of 'octave-3.6.1/scripts/pkg/pkg.m' file. After installing packages both locally and globally I've noticed that both global and local packages were listed by 'pkg list', and they were both listed as autoloaded. I did request autoloading in both cases, so it is not a problem, the problem is that both local and global - if I understand correctly, local packages should take precedence. Looking into 'octave-3.6.1/scripts/pkg/pkg.m' file contents I came to the conclusion (thanks to the comment) I came to the conclusion that the desired functionality is supposed to be implemented by line #1988..2004: 1972 function [out1, out2] = installed_packages (local_list, global_list) 1973 ## Get the list of installed packages. 1974 try 1975 local_packages = load (local_list).local_packages; 1976 catch 1977 local_packages = {}; 1978 end_try_catch 1979 try 1980 global_packages = load (global_list).global_packages; 1981 catch </pre> Sergei Steshenko 2012-05-21T09:28:11 http://comments.gmane.org/gmane.comp.gnu.octave.general/41605 <pre>Hello Installing a package in Octave-3.6.1for Windows VS2010 I get the following error: couldn´t create installation directory ...3.6.1\m\pkg\pkg.m : Permission denied error: called from 'pkg&gt;copy_files' in file ...3.6.1\m\pkg\pkg.m near line 1563, column 7 error: called from: error: ...\3.6.1\m\pkg\pkg.m at line 869, column 5 error: ...\3.6.1\m\pkg\pkg.m at line 383, column 9 Thanks for any help. -- View this message in context: http://octave.1599824.n4.nabble.com/Permission-denied-installing-package-tp4629967.html Sent from the Octave - General mailing list archive at Nabble.com. _______________________________________________ Help-octave mailing list Help-octave&lt; at &gt;octave.org https://mailman.cae.wisc.edu/listinfo/help-octave </pre> benes 2012-05-21T01:04:49 http://comments.gmane.org/gmane.comp.gnu.octave.general/41602 <pre>Hello, while installing tsa-4.2.4.tar.gz package I've noticed the following strange messages: make: /usr/local/MATLAB/R2010b/bin/mexext: Command not found make: Entering directory `/mnt/sdb8/sergei/AFSWD_debug/build/octave_forge_bundle/oct-eXZ1Jq/tsa/src' make: /usr/local/MATLAB/R2010b/bin/mexext: Command not found make: Nothing to be done for `mex4o'. ... /home/qemu/octave-3.6.1/tsa-4.2.4/i686-pc-linux-gnu-api-v48+/covm_mex.mex: failed to load: /home/qemu/octave-3.6.1/tsa-4.2.4/i686-pc-linux-gnu-api-v48+/covm_mex.mex: wrong ELF class: ELFCLASS64 . Any idea what this all can be ? I.e., for example, why Matlab is called during Octave package installation ? What is that "ELFCLASS64" ? My machine is a 32 bit one. Thanks,   Sergei. </pre> Sergei Steshenko 2012-05-20T21:38:31 http://comments.gmane.org/gmane.comp.gnu.octave.general/41600 <pre>Having a cellstr array like this: octave:178&gt; ar = {'abcdefguvwxAny' ; 'acegxyzTrailing'; 'vxzJunk'} ar = { [1,1] = abcdefguvwxAny [2,1] = acegxyzTrailing [3,1] = vxzJunk } how can I efficiently split it into two columns using regular expressions like '[abcdefg]' and '[uvwxyz]' to obtain { 'abcdefg', 'uvwxAny'; 'acegTrailing', 'xyz'; '', 'vxzJunk'} ? IOW, I'd like to split the cellstr array at the location where '[uvwxyz]' matches (even if not present, see far below). The closest I get is: ## Invert pattern and use 'split' keyword octave:179&gt; ss = regexp (ar, '[^abcdefg]', 'split') ss = { [1,1] = { [1,1] = abcdefg [1,2] = [1,3] = [1,4] = [1,5] = [1,6] = [1,7] = [1,8] = } [2,1] = { [1,1] = aceg [1,2] = [1,3] = [1,4] = [1,5] = [1,6] = a [1,7] = [1,8] = [1,9] = [1,10] = g } [3,1] = { [1,1] = [1,2] = [1,3] = [1,4] = [1,5] = [1,6] = [1,7] = </pre> Philip Nienhuis 2012-05-20T20:00:53 http://comments.gmane.org/gmane.comp.gnu.octave.general/41597 <pre>I can´t do a thing with my image files. I discovered that: The GraphicsMagick-1.3.12 folder of my installation contains just a folder named "config". This folder contains the following files: "colors.mgk", "log.mgk" and "modules.mgk". Is this right? The GraphicgMagick-1.3.15 of another installation contains a lot of folders and files. Thanks for any help. -- View this message in context: http://octave.1599824.n4.nabble.com/Another-problem-with-GraphicsMagick-1-3-12-tp4629955.html Sent from the Octave - General mailing list archive at Nabble.com. _______________________________________________ Help-octave mailing list Help-octave&lt; at &gt;octave.org https://mailman.cae.wisc.edu/listinfo/help-octave </pre> benes 2012-05-20T17:12:51 http://comments.gmane.org/gmane.comp.gnu.octave.general/41595 <pre>Good day. I have just got 3.6.1 working on ubuntu through the via the ppa method but I am having trouble with printing(saving) a plot. I need to use the fltk backend but when trying the following code the .tex file does not seem to work. graphics_toolkit fltk plot(rand(3)) print -depslatex foo This generates two files, the foo.tex and foo-inc.eps, however the foo.tex does not refer to the foo-inc.eps. Using gnuplot the tex file uses the (In gnuplot's case) foo.eps. Is this my system causing the problem? Oh, I need to use fltk for the way it handles the fill plot type. On a similar topic, how does one set the default backend to fltk? Thanks in advance. </pre> Grant Stephens 2012-05-20T13:41:16 http://comments.gmane.org/gmane.comp.gnu.octave.general/41592 <pre>Hello, trying to debug some problems in package installation (I'm talking about octave-3.6.1/scripts/pkg/pkg.m file in the source tree) I've noticed a couple functions. The first of them is 'load_packages':    2105 function load_packages (files, handle_deps, local_list, global_list)    2106   installed_pkgs_lst = installed_packages (local_list, global_list);    2107   num_packages = length (installed_pkgs_lst);    2108    2109   ## Read package names and installdirs into a more convenient format.    2110   pnames = pdirs = cell (1, num_packages);    2111   for i = 1:num_packages    2112     pnames{i} = installed_pkgs_lst{i}.name;    2113     pdirs{i} = installed_pkgs_lst{i}.dir;    2114   endfor    2115    2116   ## Load all.    2117   if (length (files) == 1 &amp;&amp; strcmp (files{1}, "all"))    2118     idx = [1:length(installed_pkgs_lst)];    2119   ## Load auto.    2120   elseif (length (files) == 1 &amp;&amp; strcmp (files{1}, "auto"))    2121   </pre> Sergei Steshenko 2012-05-20T01:40:57 http://comments.gmane.org/gmane.comp.gnu.octave.general/41591 <pre>Greetings, I am having an issue when using 'plotyy()' in a subplot. When I plot something in a subplot of a figure and then attempt to plotyy() into another subplot of that figure the correct y-axes are displayed, but only one of the two curves is displayed. I can sometimes see the other curve flash in the subplot I am plotyy()-ing to but it immediately disappears when the second curve is displayed. The following test code seems to reproduce the issue for me: clear figure(1) clf t=[0:1/1000:1]; x=sin(2*pi*t); y=5*cos(2*pi*t); figure(1); subplot(3,1,1); hold on title('x(t)') plot(t,x); subplot(3,1,2) hold on title('y(y)') plot(t,y); subplot(3,1,3) hold on title('x(t), y(y)') plotyy(t,x,t,y); Here is what I see when I run this: http://octave.1599824.n4.nabble.com/file/n4629948/Screen_shot_2012-05-19_at_7.41.57_PM.png What I expect to see is both x(t) and y(t) plotted together in subplot(3,1,3), each with its own y-axis. If I don't use subplo</pre> notMyUsername 2012-05-19T23:54:03 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.gnu.octave.general