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kjetil87


Active since 2012

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Matlab suddenly crashes/exits with no error msg.
I have recently had a problem with Matlab suddenly exiting. I have not identified a spesific action that will make it close but...

mer än 10 år ago | 1 answer | 0

1

answer

Answered
How to get a sum of a series
t = 3:100; sumY=0; for i=0:2 sumY = sumY+sum(A(1+i)*X(t-i)) ; end like this?

nästan 11 år ago | 1

| accepted

Answered
problem to arrange rows and columns with fprintf into world
Your are missing one of the numbers/chars . v is 3x4 not 3x3.

nästan 11 år ago | 0

| accepted

Answered
Writing new column in Text file
As far as i know, there is no possability of writing in the middle of a file and have the rest of the data just shift along (cor...

nästan 11 år ago | 0

Answered
Error using horzcat in a for loop
horzcat concatinates arrays in horizontal direction i.e x = [a , b] is horzcat. when you call B=[(1:p-1)' ,z] your are calling ...

nästan 11 år ago | 0

| accepted

Answered
how to escape,reading line that starts with special character in a text file.
fid=fopen(filename); if(fid<0);error('unable to open file');end y=cell(500,1);%allocate some space, if you alloc...

nästan 11 år ago | 0

Answered
Generic code to import data from set of txt files?
To find all .txt files in a directory use: myDir = 'C:\iHaveStoredSomethingHere\'; %last backspace is important! di...

nästan 11 år ago | 0

Answered
sampling rate and the filter output improvement
300 samples sounds about correct from fvtool. Try adding a trail of 300 zeros after your signal. Or get the filering method you ...

nästan 11 år ago | 0

Answered
Usage of downsample function in 2012b
Undefined function means that the function does not exist, so parhaps there is a small typo in your call? Is the signal proc...

nästan 11 år ago | 0

Answered
How to run a code for several files also how to stop the code for a specific number of files and give output?
PATH = 'C:\myFilesAreHere\'; %remember the last \ files=dir([PATH,'*.dat']) ; %get info about all files in PATH that e...

nästan 11 år ago | 1

| accepted

Answered
How do I extract surface plot data from a figure?
x=1:5; y=1:5; z=randn(5,5); fprintf('z was : \n'); disp(z); figure;surf(x,y,z); clear all ch=get(...

nästan 11 år ago | 0

Answered
How to find the crosspoint of two curve
If i have done this correctly this should give you the first point in yy before each zero crossing. y=[-0.1227 0.0581 0.0...

nästan 11 år ago | 0

Question


intel c++ composer 2011 with SKD 7.1 and R2013a
So i am trying to use the intel c++ composer XE 2011 (update 13) together SDK 7.1 to compile matlab mex functions. According t...

ungefär 11 år ago | 2 answers | 0

2

answers

Answered
How to Sum Certain Values in Matrix A Based on Values of Matrix B in a Loop
Im not a 100% sure if this is what you asked for but ill have a go at it =) A=[0:23;... %hours 0 to 23 rand(15,24)];...

ungefär 11 år ago | 0

| accepted

Answered
loop until condition met
Vo = [30 15 13 10];% initial V old to calc Re and f. MaxIter=1e10; % Cntr=0; while true Cntr=Cntr+1; % ...

ungefär 11 år ago | 0

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Answered
Area under autocorrelation function.
Initially i thought the previous answer was ok, but when reading your entire post you specified that you needed the FIRST positi...

ungefär 11 år ago | 1

Answered
loop until condition met
A while loop is what you are looking for it seems. while ~all([Va==Vo,Vo==Vn]) %your code end

ungefär 11 år ago | 0

Answered
How to mark local peak values of a signal an count them? Matlab GUI
try this one? <http://www.mathworks.se/help/signal/ref/findpeaks.html> if you end up marking to many peaks, try playing ar...

ungefär 11 år ago | 0

| accepted

Answered
How are vector - vector products calculated?
It is different, if you type type dot You will see that the actual computation done in dot after all the dimension check...

mer än 11 år ago | 3

| accepted

Question


Editor , undocking into two GROUPS
Hi, everyone! I was wondering if there was a way to undock say 50% of the open .m files and group them together? As of now i...

mer än 11 år ago | 0 answers | 0

0

answers

Question


c++ shared library startup options
Hi everyone. I have a question regarding compilation of c++ shared libraries and multithreading. When creating a standalone ...

mer än 11 år ago | 1 answer | 0

1

answer

Answered
How to remove this error??
You are indexing h as h(k+1,1) That way when k=80 you are assigning a new value to h(81)=h(80,1)-10; And thus t...

mer än 11 år ago | 0

Answered
WHEN I RUN THIS CODE IT AGAIN AND AGAIN GIVE THIS PROBLEM THAT IS 'Index exceeds matrix dimensions.'
You are declaring PopM as PopM=[]; Then your are telling matlab to acces element i and j of this matrix, but this matri...

mer än 11 år ago | 0

Answered
Doubt on Covariance matrix of 3 vectors in MATLAB
You are correct about the diagonal elements var(x) , var(y) and var(z). But the off axis computations is not correct. When you ...

mer än 11 år ago | 1

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Answered
how to make a variable name from a string
The error should not appear, your code looks to work exept for the part of 'data' , should this instead be value? test='eye...

mer än 11 år ago | 0

| accepted

Answered
matching matrices sizes using if statements
A=[ 1 2 3;... 4 5 6;... 7 8 9]; B=[4 5 8;... 1 2 7]; [ma,na]=size(A); [mb,nb]=size(B); ...

mer än 11 år ago | 0

| accepted

Answered
Sorting a vector with another vector of multiple maximums
Im not a 100% sure if this is what you are asking for, but as for checking for multiple maximums you are actually already doing ...

mer än 11 år ago | 1

| accepted

Question


Assigning single processor core in script
Hi, i am looking for a way to assignt a single core from within matlab. i.e something like: %% my script: clc; cle...

mer än 11 år ago | 0 answers | 0

0

answers

Answered
how to get the string inside exist ?
exist([num2str(val),'.png'],'file')

mer än 11 år ago | 1

| accepted

Answered
how can i simplify this for loop?
a=[]; t=zeros(5,2); for i=1:2 t(:,1)=(1:5)+i; t(:,2)=(2:6)+2*(1:5); a=[a;t]; end disp(a) Y...

mer än 11 år ago | 0

| accepted

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