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comp.soft-sys.matlab Post New
Items(17778) /356 Next >> Last >|
Subject Posted Replies From
Fourier equation and getting out of memory error tia sal22

Fourier equation and out of memory error tia sal22 Sorry is this got posted twice my posts seem not to be showing up in some groups...usenet gremlins again Greetings All I can get this matalb script to work and plot when I set x=linspace(0,1,100); But when I set x=linspace(0,1,44100); I get a mtimes out of memory which I narrowed down to the large array size in the C and S variables Can someone recommend a way for this code to work without running into memory errors? I tried going the fft route but the signal would never match up. The plot looks great I just would like to:

9/3/2010 4:33:58 PM 0 Rick T <ratull...@gmail.com>
slicing one dimension, copying all others

Hi, I am looking for a way to slice along one dimension and copy along all others. I am looping through the fields of a structure. The data for each field is a matrix with 2 or more dimensions. Along the first dimension, all have the same size, but the other dimensions differ. I want to slice on the first dimension, and keep all others the same. For example: M = lon: [2265x90 double] lat: [2265x90 double] time: [2265x1 double] tb: [2265x90x5 double] becomes M = lon: [2148x90 double] lat: [2148x90 double] time: [2148x1 double]

9/3/2010 3:57:04 PM 1 Gerrit Holl <gerrit.h...@gmail.com>
Problem compiling mex function

Hello, I am trying to compile a .mex file that grabs data from a National Instruments high-speed digitizer card. I have the code working on an older machine (32bit windows XP with Matlab 7.0.1), but am running into linker errors on a new machine (64bit windows 7 with 64bit Matlab 7.10.0). When I try to mex the .cpp file I get the following linker errors: mex('-v', ... '-LC:\Program Files (x86)\IVI Foundation\IVI\Lib\msc\', ... '-lniScope', '-livi','-liviscope', ... '-IC:\Program Files (x86)\IVI Foundation\VISA\WinNT\include', ... 'ScopeFetch.cpp'); --> link /out:"ScopeFe

9/3/2010 3:58:23 PM 0 "Nathan " <ndgr...@gmail.com>
Combining MRI slice to make 3D

Hello I am new to matlab and for my project i need to combine MRI slices to make a 3d image. the data is in .M file as a 3 dimentional matrix of 512x512x144. I need to produce 3dimentional image out of this can anyone please help me? thanks

9/3/2010 3:40:13 PM 1 "Hamed " <hamed.moaz...@alumni.utoronto.ca>
Opening issues. Java problem

Hi, My matlab works fine but I don't have any interface GUI. However, plots are displaying well. This is my message error: JavaVM: requested Java version (1.6) not available. Using Java at "" instead. JavaVM: Failed to load JVM: /bundle/Libraries/libjvm.dylib JavaVM FATAL: Java for ppc cannot run in this configuration. JavaVM FATAL: Please consult documentation. Warning: Failed to start the Java Virtual machine - JNI error: -1. Warning: Disabling Java support. I don't have this libjvm.dylib file. I don't know why Java do not recognize my 1.6 version. If you have any idea feel

9/3/2010 3:20:21 PM 0 "Jonathan " <grossbla...@yahoo.fr>
Placing cursor in edit field in gui

Hi all. I'm trying to figure out how to place a cursor in a specific edit box automatically and my searches for the last 15 minutes haven't yielded fruitful results. Can somebody point me in the right direction?

9/3/2010 3:03:26 PM 4 "Eamon " <drawbri...@cornercase.net>
3d plot with multiple 2d plot contours

I need to draw a 3d plot as follows: There are three planes that are parallel. on each plane I wish to draw a 2d plots like contours or multiple circles. I also want to draw the planes and draw arrows that connect the some points inside the planes.

9/3/2010 2:32:28 PM 0 "Seyed Iman " <i.remove.this.mosa...@remove.this.gmail.com>
blur matrix only

Hi, I did search this in this forum about blur matrix but looks no specific question and answer on creating a blur matrix of a square matrix. I don't want to use the imfilter which already blurred the image without I can access the blur matrix. For example, I also tried to generate the blur matrix, B from an image size 100x100 but the rows becomes greater than the columns, 10404 x 10000. How to create a square blur matrix of size NxN (e.g: 10000x10000) ? H = ones(3,3)/9; % averaging filter 3-by-3 B = convmtx2(H,r,c); %2D convolution matrix where r and c is the row and column for t

9/3/2010 2:17:31 PM 3 "sarrah " <gto_girl...@yahoo.com>
Structure Assignment

Given vectors x and y each with N elements, I want to create an N element structure s with fields s.x and s.y. I can do this by for ii=1:N, s(ii).x=x(ii); s(ii).y=y(ii); end I there a neater way?

9/3/2010 2:27:31 PM 3 "Alan " <alan.newsgroup.aco...@gmail.com>
Problem with camera up vector (camup)

Hi all! I'm making a video from an image sequence in matlab from a 3d sequence of plots. I need to change the position of the camera for each plot, then save the image and create a video from the image sequence. The problem is that when I move the camera position, keeping the camera target fixed, I get a strange behavior: the plot seems to rotate! I tried to set the camera up vector, setting it to 0 0 1, in order to point the z axis to the top, but the rotation still persists, even if it is a bit smaller (i.e., if i plot an horizontal plane, the plane is rotate of around 60 degrees). Why the c

9/3/2010 1:54:07 PM 2 "Paolo -" <xx...@xxxx.xxxx>
Polynomial Model Template

Dear all, I want to use polynomial model template of order -'n' (should be input by user) of m factors (the symbols should be input by user) in MATLAB. Using Model-Based Calibration toolbox [my matlab version: MATLABR2009a] it can be done in GUI. But I want to do this in .m file invoking some inbuilt function of MATLAB (or more specifically MBC toolbox). I am not able to figure out which function I should invoke to do this. Please help me in this regard. BR Samiran.

9/3/2010 2:08:45 PM 0 Samiran <samiran....@gmail.com>
An easy one on vector construction - help please

I would like a vector that is 1200x1 in size and each row contains the figure "0.1". Can somebody tell me how to do this please. Thank you

9/3/2010 1:48:05 PM 2 "Aaron Anstey" <ela...@lboro.ac.uk>
p-value

Hi Everyone, Suppose I have a vector containing standard errors for an OLS regression model. Now I wish to obtain a corresponding vector that contains the p-values for these standard errors. Given that I do not have the MatLab statistics toolbox, how do I go about obtaining this result? Regards, Ulrik

9/3/2010 1:50:26 PM 2 "Ulrik Nash" <...@sam.sdu.dk>
Second NIC

Hi, I read on this side: http://www.mathworks.com/help/toolbox/xpc/io_ref/brrdopr.html that it is possible to use two network cards. One for the communication between host and target and one for the communication between target and a third PC. The connection between host and target is no problem. For the communication to the thrid system I use "Ethernet Initialization", "Network Buffer Management", "Pack" and "Create Ethernet Packet". But nothing happens on the third PC (I test it with wireshark). Any Idea? Regards, Benny

9/3/2010 1:17:23 PM 0 "Benny " <benjamin097-registrat...@yahoo.de>
Find nonzero rows in matrx

Is there a simple method (or a function) that you can use to find nonzero rows in a matrix. So, suppose I have a matrix A: A = [ 1 0 0 2 3 5 0 4 3 1 0 5] Row 2 has only nonzero elements, while rows 1, 3 and 4 have some zero elements. I would nou like to get the index of the "nonzero row", which in this case is 2 of course. Can anyone help? Tanks!

9/3/2010 1:20:30 PM 2 "Rob " <r.f.p.v.vu...@student.tue.nl>
reg:generation of verilog code from .m file

hi all, i m doing my project in Multiwavelets...i.e VLSI architecture of multiwavelets.....so i need to realise multiwavelets in digital domain....so i need to generate verrilog code from my .m file......how s it possible...please help because its my final year project..thank you in advance.............

9/3/2010 12:59:05 PM 1 "mohan kumar" <mhnbit...@gmail.com>
voronoin

Hello, I need to create the Voronoi Diagram of a group of kidney cells. I have centroid coordinates (3D) of every cells. I open the file (called 'Glomerulo') with the coordinates and then: x=Glomerulo(:,1); y=Glomerulo(:,2); z=Glomerulo(:,3); B=[x y z]; #creation of the centroids matrix [v, C]=voronoin(B) #3D voronoi diagram of B NOW: HOW CAN I PLOT MY DIAGRAM? Thanks

9/3/2010 1:00:27 PM 0 "Maria Grazia Madaschi Madaschi" <mariagrazia.madas...@unibg.it>
find creation date of file

By using the dir function the "last change" date of a file is available in Matlab. However if I was interested in finding the "creation date" of the same file, how should/could I do that. perhaps this J-Script could be helpful? Though I am not so good at implementing Java in Matlab so someone maybe could help me turn this into Matlab: function ShowFileInfo(filespec) { var fso, f, s; fso = new ActiveXObject("Scripting.FileSystemObject"); f = fso.GetFile(filespec); s = "Created: " + f.DateCreated; return(s); } found at: http://msdn.microsoft.com/en-us/library/ke6a

9/3/2010 12:16:05 PM 1 "Anders Frisk" <multisport...@hotmail.com>
Function References

Hi! I would like to know if there is way to generate a report listing all the classes that are a using a particular function on a particular class. For example, I have the MyFunction1 function on the MyFile1.m, and I would like to know all the m files and other files using the MyFile1.MyFunction1. Thanks!

9/3/2010 12:26:05 PM 4 "Ayrangel " <ayrangel.Remove.t...@yahoo.com>
nnet adaption and compiler

Hi, have anybody a suggestion for the following problen: I used the nnet-toolbox with net.trainFcn='trains' to adapt the network. It works in matlab. The compiled version produces the following error: Output argument "err" (and may be others) not assigned during call to "......subsasgn.m>setTrainFcn" The correxponding m-file is OK, but it doesn`t work after compiling. Thanks for comments

9/3/2010 11:55:24 AM 0 "Peter Rudolph" <p.rudo...@alice-dsl.net>
create .avi files from different video and audio streams

I am doing a project where I separate video and audio data from an .avi file, then I proccess them somehow(doesn't matter) and I want to create an output .avi file combining the new audio and video data. Firstly, I found it hard to get the audio from an .avi file but finally I used the -mmread- function from Micah Richert and manage to read both audio and video data. Now can't find a way to get the new data together to a new .avi file.Of course there is -mmwrite-, but because I change the format of the video and audio structs that -mmread- returns is difficult to use. One way is to try

9/3/2010 11:40:15 AM 1 "Harry " <herbal.essen...@gmail.com>
project related

hi,i am working for driver drowsiness detection system but facing the problem in processing the images can u pease suggest me the MATLAB code or any reference

9/3/2010 10:32:06 AM 0 "babloo chandak" <mailme.dineshchan...@rediffmail.com>
Inverse Bump Mapping

Hi Folks, Does anyone know of a tool or a way to approach converting a bump mapped 2D image into a 3D relief map. e.g. Using an image like this http://www.blacksmith-studios.dk/images/projects/bumpmapping_tut/rockBump.JPG extract an estimate for the surface profile or a cross-section if the illumination angle is known. cheers in advance for any poke in the right direction!

9/3/2010 10:33:10 AM 0 "Oliver " <oliver9...@hotmail.com>
comp.software.matlab

http://123maza.com/25/flight472/

9/3/2010 10:44:45 AM 0 ponraj niz <nizpon...@gmail.com>
Flattening 3d surfaces

Dear community, is there any tool to unwind (simply) warped (triangulated) 3d surfaces, e.g. the surface shell of a cylinder (height h, radius r), which should then result in a rectangle of height h and width 2*pi*r. I know that the resulting surface will be nonoverlapping only in some cases, especially not in the case of bidirectional warped surfaces. My ideas towards such an algorithm are the following: 1. Start from some triangle of the triangulated surface. 2. go through all edges and "flatten" the adjacent triangles by rotating the non-common cornerpoint around the sharted ed

9/3/2010 10:13:22 AM 2 "Johannes Korsawe" <johannes.korsawe.nos...@volkswagen.de>
[matlab] overlapping graphs

hello everyone i would like plot graf in matlab, and in one of the corner i would like plot another one, do you know how to do this? i tried with subplot, but subplot is only to creates plots in matrix, i've been looking for any information about on the internet but i couldn't find anything helpfull thanx slawek

9/3/2010 10:14:42 AM 1 Slawomir Piasecki <piase...@gmail.com>
problem: creating a decimal to binary function for an array input

Hi People, I'm trying to create a decimal to binary function for an array input but it seems that my output is always wrong, I believe it has something to do with the loop. This is my code clear; clc; %%input x=1; dec_nr = [1 2; 255 245; 1 255]; %% accessing row for row = 1:3 %% accessing column for column = 1:2 i=1; q(row,column) = floor(dec_nr(row,column)/2); r(row,column) = rem(dec_nr(row,column), 2); bin(x,:) = zeros(1,8); bin(x,i) = r(row,column); while 2 <= q(row,column); dec_nr(row,column) = q(row,column); i = i + 1; q(row,column) = floo

9/3/2010 9:52:22 AM 5 Erry Sutisna <erry.m....@gmail.com>
Objects updating properties.

Hello I am having difficulty wrtting an object oriented program in MATLAB. I apologize if this a basic question, I am a new comer to MATLAB and object oriented programming. The full program is too long to post here however I've written a simpler program to illustrate the same problem. My class is written as: classdef myClass properties numberval=0; end methods function obj = myClass(obj) figure; obj.numberval=0:0.1:4; end function setNumber(obj,num) obj.numberval=num; end end end

9/3/2010 9:44:05 AM 0 "Jack " <el...@lboro.ac.uk>
texture removal

Hello I want to read some alphanumeric data printed on a textured background, a sample image of which I have uploaded here. http://drop.io/texture11 I would like to erase the background texture, so that only the alphanumeric character stand out. Later I need to do OCR, which I think I can be able to do, but segmentation right now is possing a problem. using ; background = imopen(I,strel('disk' ,10)); does not help Thanks Vihang

9/3/2010 9:44:05 AM 4 "Vihang Patil" <vihang_pa...@yahoo.com>
Bring the latest added block in front of others.

The latest added block is always positioned below the others. Is it possible to change the order and bring the latest added block to the front? Thanks in advance, Oliver

9/3/2010 9:00:42 AM 1 "Oliver " <or...@dspace.de>
array to cell in matlab

Here is the problem: when i execute z={ 1 2 3 4 5 , 'type'}' I will get : z = [1] [2] [3] [4] [5] 'type' but when I execute z={ [1 2 3 4 5] , 'type'}' I will get z = [1x5 double] 'type' How can I get the same format for my second code? the thing is I am using 100x1 array and I want to add the word 'type' to the begining of it and then put it in Excel. with the second command , i will see only the word 'type' in the exel sheet. I was wondering if anybody can help me out !!

9/3/2010 9:06:23 AM 2 "Mohammad Reza " <m_n_avan...@yahoo.com>
reshape char from sprintf

Dear all, I have to generate a list of filenames (simple example): names = sprintf('F%d.DAT\n',9:11) names = F9.DAT F10.DAT F11.DAT But "names" is a 1 by 23 char array. I need it to be a or a 3 by 8 char array (with blanks padding) or a 3 by 1 cellstring: names = textscan(sprintf('F%d.DAT\n',9:11),'%s','Delimiter','\n') names = {3x1 cell} Again, names is a 1 by 1 cell: names{1} ans = 'F9.DAT' 'F10.DAT' 'F11.DAT' Can I just skip "names = names{1};" when calling textscan or is there any other efficient way? Thank you Oleg

9/3/2010 9:09:21 AM 3 "Oleg Komarov" <oleg.komarovRemove.t...@hotmail.it>
How to use NOMADm?

Hi, I want to use the free optimization software NOMADm. However, I haven't found out how to call it correctly, since I find the interface quite complicated. Has anybody worked with NOMADm and knows how to use it? The software can be found here: http://www.gerad.ca/NOMAD/Abramson/nomadm.html Thanks a lot.

9/3/2010 9:11:21 AM 1 "Martina " <sir.hen...@gmx.net>
figure handles, 2Dor3D

Hello All, maybe somebody can help me with the following: I have got my own script that converts already saved .fig files to presentation usable figures. So it changes all the line thicknesses, font size etc of saved figures in a certain folder. I use it a lot but it is under continuous development. At some point in the script it sets the axes property 'box' to 'on'. Although this is very good for a 2D plot, I do not want to do this for a 3D plot. Is there a way to check if a figure is a 2D or 3D plot? Is this stored somewhere in the handles of a figure? Any help on if and where t

9/3/2010 8:35:24 AM 0 "Toby " <mazel...@hotmail.com>
function for number of elements less than something?

Is there a way to simply return the number of elements in an array that is less than a given number. I'm currently doing it the way I would in C but I know matlab probably has a better way! for k=1:length(x_coords) if x_coords(k) < thresh points_before_start = points_before_start + 1; end end Thanks

9/3/2010 8:50:20 AM 2 "tony evans" <guitar_guy...@hotmail.com>
Speeding up Zip

I have an m file that an xls file of about 7MB. I then manually compress this (in windows explorer send to \ compressed folder) in email the file to various people. I would like to get matlab to also compress the file file but the zip function takes about 5 minutes to run compared with less than 20 seconds from windows. Gzip is only marginally faster (3.5min) but has issues in that I believe windows itself can not unzip the file so all my recipients would need winzip or something similar. Why is the zip function so slow? Is there a way to call the windows function directly or a faster w

9/3/2010 8:19:27 AM 1 "Carl " <carl.me...@sse.com>
reading parameter from s-function block

Hi everyone, I'm working on a CAN driver and we are adding a functionality named: Gateway. this block needs the following parameters: CanSrcBus, CanDesBus, CanIdMask, CanGwBidirectional. the CanIdMask is a parameter that can contain more then one variable and is used for comparison with CANId's. In the S-function C, i use the following lines for getting the parameters: uint8_T CanSrcBus = (uint_T)(mxGetPr(ssGetSFcnParam(S, S_CANSRCBUS_ARG))); uint8_T CanDesBus = (uint_T)(mxGetPr(ssGetSFcnParam(S, S_CANDESBUS_ARG))); int32_T CanIdMask = (uint_T)(mxGetPr(ssGetSFcnParam(S, S_CANI

9/3/2010 8:24:07 AM 0 "Eric " <egtbo...@yahoo.co.uk>
Selection of variables in Stepwise regression

Dear all, I think I have finally been able to run Stepwise regression on MATLAB using the "t" (=B/SE) criterion instead of "p" for the selection (addition/deletion) of variables. However, and if I am not wrong, it seems it is very difficult to force the code to select a specific number of variables, i. e., the code as it is tell you which and the number of variables that are important, but can not tell you which are the first 13 (for example) most important variables....Two questions: 1) Is this (my understanding) correct?. 2) have you changed the code to (could you please let me

9/3/2010 8:07:58 AM 0 PedroLatorreCarmona <platorrecarmo...@gmail.com>
Displaying ODE image from MS Access database

Hi everyone, i've created a GUI to retrieve data from a MS Access database. One of the fields in the table is a ODE field named 'pix' which contains an attached image file. i'm trying to retrieve this image file from the GUI however, the displayed image is totally distorted. Below is a short excerpt of my code to retrieve and display the file. Can anyone please advise me ? Thanks for reading :) connA=database('sus','','') ping(connA) cursorA=exec(connA,['select pix from Test Where ID=252']); %pix and ID are fields , Test is a Table cursorA=fetch(cursorA,10) AA=cursorA.Data

9/3/2010 7:17:23 AM 1 "Daniel Tay" <bigcow82...@hotmail.com>
Elimination of one point from a plot

Please guide me how to eliminate one point from a plot command?

9/3/2010 7:26:23 AM 1 "Uma " <uma_da...@hotmail.com>
regarding video denoising

i need some existing techinques for the removal of noise from from video.. i need the information and the tutrial regarding the video denoisng

9/3/2010 7:28:26 AM 1 "priyanka " <priya_...@yahoo.co.in>
Defuzzification-LOM (largest of maximum)

Good Day, For LOM defuzzification, how to determine the crisp value if i have same maximum values of 0.6 between (-0.8 to -0.2) and (0.2 to 0.8)? Output mf consists of triangular mf. Thank you.

9/3/2010 7:07:24 AM 0 "goh " <yin_...@hotmail.com>
Training of ANFIS

Hi all, I am working on a project that involves the use of ANFIS to optimize the parameters used in a design of a microstrip Patch antennas. I have got the data for training the system, however i experince on problem....is there a way of getting to see the optimized values of both the input and output data... Please help

9/3/2010 6:16:19 AM 0 "mine Rop" <vik...@yahoo.com>
MCR typeinitializationexception on win7

Hi, I am using Matlab R2010A on win7 x64, I compile matlab code to .Net dll. From time to time with no apparent reason the creation of the object from the class in the compiled dll throws typeinitializationexception. after restart of the application it sometimes works and sometimes not. What could be the reason for that?

9/3/2010 5:45:21 AM 0 "Tzachi " <fraim...@gmail.com>
pcode and MEX is not useful when MCR is "version dependent"

matlab can generate p-code and executable file by mcc command but how it can be useful when they are depend on MCR VERSION? it is depend on MCR and i have no problem with it but the version must be the same in the end-user pc. i mean when i write a code on matlab 7.5 and Runtime7.7 and for any reason dont want to show source to any other, i have no way. i can use p-code but the end user can not run my code when he have a different matlab version (and MCR) installed. this version related MCR is a big problem. or is there any other way to run a matlab program on end user computer that i do

9/3/2010 12:26:49 AM 1 ali <irmt...@yahoo.com>
calculate local minimum in a large matrix

I have a matrix N*N*N, I want to find the minimum mean value of a n*n*n sub-matrix within the large one. How should i go through the whole matrix with the small n*n*n cubic, I am thinking to use: [X,Y,Z] = meshgrid(A, -1:1,-1:1,-1:1); then run through the matrix to calculate mean(A(x0-X,y0-Y,z0-Z)). Is there a better way to do this and how should I deal with the boundary? Thanks a lot.

9/3/2010 3:18:04 AM 3 "JohnMC " <nirmath...@gmail.com>
system command string error

Hi everyone, I am trying to use the system command to open a new instance of matlab and pass a function into it, the call is something like this: system('C:\MATLAB\R2009b\bin\matlab -nosplash -minimize -r myFun(''read:=test.txt'')') When this runs it gives me the following message: ??? Error: A MATLAB string constant is not terminated properly. I have to use myFun with this specific type of input and I am 100% positive the error has to do with those double quotes around the input argument but I can't for the life of me figure out how to get this to work. Note: those double

9/3/2010 2:41:07 AM 0 "John " <jrazz...@usc.edu>
Arithmatic operation for different matrix dimension

Hi, I am new in matlab and would like to do arithmatic operation for different matrix dimensions. For instance: A = [1 2 3; 4 5 6;] (2x3 matrix) B= [1; 2;] (2x1 matrix) How can I multiply A*B? Basically, I would like to get the result like this: A*B = [1x1 2x1 3x1; 4x2 5x2 6x2;]

9/3/2010 1:32:04 AM 1 "Tanvir " <itan...@live.com>
Concatenation in Simulink

Hi, Two constant arrays 2x2 were defined using Source Blocks in Simulink. They were concatenated (e.g. horizontally). Result was assigned to the variable zz using 'To Workspace' block. If the 'To Workspace' block parameter 'Limit data points to last' is equal to 1 than zz is 2x4 matrix. If 'Limit data points to last' is the default inf or 2 than zz is 2x4x2 matrix, two identical 2x4 matrices in two planes. Why is 2x4x2 matrix in the latter case? Regards, Pavel

9/3/2010 1:24:04 AM 1 "Paburo " <pdybs...@gmail.com>
mupad notebook engine synchronization

Hi all, I have a mupad notebook that I want to access from matlab. I create a handle to the notebook: nb=mupad('test_nb.mn'); I know I need to synchronize the mupad notebook with its engine before I can access any of the equations I have in there. All the documentation I read says to go into the notebook menu and choose 'evaluate all'. And it I do this, it works fine. My question is: is there a way to automatically get the notebook to synch so that I can call a bunch of stuff from matlab without having to stop and do "evaluate all" from the notebook menu? or if not automatical

9/3/2010 1:04:05 AM 0 "Melissa " <nisc...@ll.mit.edu>

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