Jonas
C++, Java, MATLAB
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Contribute at least one answer each month for 3 consecutive months
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Content Feed
plotting piecewise periodic function
you could generate the values for one cycle and then repeat the values using repmat()
28 días ago | 0
How to store all the A matrix that I have got from every iteration
is y a single value? then A would be a row vector. you can initialize your A before the loop as A=nan(numel(linspace(15,75,5)),2...
28 días ago | 0
Question
How to assess frequency stability of sung notes while keeping frequency precision under the possiblity that a vibrato (frequency modulation) is present.
dear community, i have different recordings of a sequency of tones with increasing frequency. this tone sequence is repeated an...
alrededor de 1 mes ago | 2 answers | 1
2
answersHow to find zero-state step response from a discrete time system?
if you are interested in the step response, your x(n) is 0 for n<0 and 1 else. y(n) is 0 for n<0. just iterate with a for loop ...
alrededor de 1 mes ago | 0
| accepted
Question
Why does a sine bandwidth decrease with 1/dur, dur beeing the signal duration
Dear community, recently i was interested in the bandwidth of spectra. That's why i did some plots for signals with a single fr...
alrededor de 1 mes ago | 2 answers | 0
2
answersAND in while loop
it should run if ~(a==1 && b==1) which would equal a~=1 || b~=1
6 meses ago | 0
Turning 1s to 0s in a logical vector when element distance between 1s is below threshold
you can try the follwing, but i don't know if it is faster H = [ 1 1 0 0 0 0 1 0 1 0 0 0 1 ]; eraseNAfter=5; Hstr=num...
6 meses ago | 0
| accepted
Find indices where runs of zeros and ones ends
i would use H = [0 0 0 0 1 1 1 1 0 1 0 1 0 0 0 0 0]; Hstr=erase(num2str(H),' '); [~,onesEnds]=regexp(Hstr,{'0000+','1111+...
6 meses ago | 1
| accepted
Funding a way to describe a curve in x y coordinates
you can use [rows,cols] = find(...) to get the corrdinates of your points. if you want to plot a shape you may have a look into...
6 meses ago | 0
calculating weighted sum of values in a matrix
short example for the weighting: each number is multiplied by its column index and row index in=ones(3,2); [X,Y]=meshgrid(1:si...
6 meses ago | 0
| accepted
Question
Parameters for room impulse response measurements using swept sine
hi all, I want to do get a rough idea of the acoustical impulse response of a room. This room is used by a choir and and I just ...
6 meses ago | 1 answer | 0
1
answerHow to chose the correct line style?
looks like you have to add a marker to your plot atcommand, then you do not only have lines but also markers during and the end...
6 meses ago | 0
How to adjust the view of colorbar to be the same as contourf
try that adding the colors to the image and add artificial labels using text close all; x = 100*rand(100,100); contourf(x,'Li...
6 meses ago | 1
Variables Calculated in Function Somehow Aren't Assigned to Output
looks like your two if statements are never fullfilled, thats why output variables are empty
6 meses ago | 1
| accepted
confusion during finding out the mean of a 3d vector
the short answer: your second approach takes mean values of means and the first approach takes the mean value of all elements
6 meses ago | 0
How to export coefficients of IIR filter from Filter Designer Tool?
go to Edit -> Convert to single section and then you can export them as numerator and denumerator
6 meses ago | 0
To compare to matrices element by element
you can compare matrix A and B directly using typical comparing operators A<B if the question is if there is any element of A ...
6 meses ago | 0
How to create a loop until the condition is met?
add the follwing at the beginning infLoop=1; while infLoop infLoop=0; % your code and that to the end o...
6 meses ago | 0
How to convert images as array to images and save them in folder
for a matrix A with ynum images in y direction and xnum images in x direction with size height x width you can use C = mat2...
6 meses ago | 0
Error scaling x-axis in Matlab?
your neural.Time variable is of type duration, then your xlim values have to be type duration too i guess
6 meses ago | 0
Percentage change in the Y axix for unit change in X axis
if you have y data along x you can calculate diff(y)./diff(x) to get the derivate. to get the pointswise percentage value divide...
6 meses ago | 0
need help making a 'for' loop to make a new matrix
your loop calculates the maximum value of a character array. since the character 'm' has value 109 (see double('m')) and your ch...
6 meses ago | 1
How to assign error bars to a multiple data sets histogram ?
use myBars=bar(1:6,Comparaison); this will give you a 1x2 bar in the variable myBars in this case. One bar object holds ...
6 meses ago | 1
Could anyone help me how to find the difference between the two columns in 10x2 double
use diff(A{1,1},1,2) to get all first order differences between columns for every row
6 meses ago | 0
i want to make comparison between two matrices elements after creating the two matrices.
you have access to cell entries e.g. by using x{1}(2,3); if your matrices have all the same size i would suggest saving them in...
7 meses ago | 0
How to set values to NaN when they AREN'T within the given indices
a=ones(3); [X,Y]=meshgrid(1:3); a(~(X==3 & Y==3))=NaN; which equals a(X~=3 | Y~=3)=NaN;
7 meses ago | 0
Delete/remove entire rows and columns containing an element that satisfies a condition (e.g. when the element is an imaginary number)
where=yourMatrix==yourCondition; yourMatrix(any(where,2),:)=[]; yourMatrix(:,any(where,1))=[]; or [row,col]=...
7 meses ago | 1
| accepted
What does this mean "No differences to display. The files are not identical, but the only differences are in end-of-line characters."
it's about on how the new line is stored. there are differences between different operating systems (OS). you can read more abou...
7 meses ago | 0
how to add a STAR or Triangle shape to plot simply without knowing their vertex?
smth. like that probably Z = peaks; contourf(Z); hold on; plot(15,10,'rp','MarkerSize',15,'MarkerFaceColor','r') al...
7 meses ago | 1
| accepted
Producing all combinations of a vector with replacement
you could e.g. use nchoosek(repelem(1:3,2),2) but then you whould have to use unique(...,'rows') on the resulting combin...
7 meses ago | 1
