Answered

How to find the smoothness of these results?

Acceleration = rand(1, 1000); % Test data Jerk = gradient(Acceleration); This replies the two sided quotient of diffe...

How to find the smoothness of these results?

Acceleration = rand(1, 1000); % Test data Jerk = gradient(Acceleration); This replies the two sided quotient of diffe...

13 dagen ago | 0

Answered

Format a SD card using MATLAB

There are smarter ways to format an SD-card, see https://www.easeus.com/partition-manager-software/format-sd-card-using-windows-...

Format a SD card using MATLAB

There are smarter ways to format an SD-card, see https://www.easeus.com/partition-manager-software/format-sd-card-using-windows-...

13 dagen ago | 1

| accepted

Answered

read inconsistent ascii file to matrix

Data = fileread(FileName); C = strsplit(Data, char(10)); % [EDITED] Remove comments: C(strncmp(C, '%', 1)) = []; match ...

read inconsistent ascii file to matrix

Data = fileread(FileName); C = strsplit(Data, char(10)); % [EDITED] Remove comments: C(strncmp(C, '%', 1)) = []; match ...

13 dagen ago | 0

| accepted

Answered

how to find distance of each pixel of image from center of image

If your image has 640 x 480 pixels, and the center is at the pixel 320 / 240: img = rand(480, 640); y = 1:size(img, 1); x = 1...

how to find distance of each pixel of image from center of image

If your image has 640 x 480 pixels, and the center is at the pixel 320 / 240: img = rand(480, 640); y = 1:size(img, 1); x = 1...

14 dagen ago | 0

| accepted

Question

Interpolation method of IMAGE

When the size of the data displayed by the image command differs from the number of pixels used on the screen, the data must be ...

17 dagen ago | 0 answers | 0

Answered

Get values from callback function

Use uiwait and uiresume to wait for the pressing of the button: ... % Create check boxes: cbx1 = uicheckbox(fig,'Text','Defi...

Get values from callback function

Use uiwait and uiresume to wait for the pressing of the button: ... % Create check boxes: cbx1 = uicheckbox(fig,'Text','Defi...

18 dagen ago | 0

| accepted

Answered

How do I stop this xlswrite error message?

It is not enough to think, that the license is active. Start Excel and check the license: http://kb.mit.edu/confluence/pages/vi...

How do I stop this xlswrite error message?

It is not enough to think, that the license is active. Start Excel and check the license: http://kb.mit.edu/confluence/pages/vi...

18 dagen ago | 0

Answered

how to match sub string with main string in a cell array??

With modern Matlab versions >= R2016b: a = {'hard';'smart';'hard drive';'smart work';'hark disk';'hard drive'}; b = {0.1;0.2;0...

how to match sub string with main string in a cell array??

With modern Matlab versions >= R2016b: a = {'hard';'smart';'hard drive';'smart work';'hark disk';'hard drive'}; b = {0.1;0.2;0...

18 dagen ago | 0

| accepted

Answered

Polyfit error warning for SDE

tau and GErr are scalars, so you have one single point for the polynomial only. Then you cannot determine a slope. I guess you ...

Polyfit error warning for SDE

tau and GErr are scalars, so you have one single point for the polynomial only. Then you cannot determine a slope. I guess you ...

18 dagen ago | 1

| accepted

Answered

Unable to access property editor

See https://www.mathworks.com/matlabcentral/answers/453228-documentation-doesn-t-open-in-new-window-anymore , especially Adam's ...

Unable to access property editor

See https://www.mathworks.com/matlabcentral/answers/453228-documentation-doesn-t-open-in-new-window-anymore , especially Adam's ...

19 dagen ago | 0

Answered

How can i drag and drop ?

Matlab does not have the feature for using drag&drop by mouse. But the copyobj command let you copy the contents of one axes int...

How can i drag and drop ?

Matlab does not have the feature for using drag&drop by mouse. But the copyobj command let you copy the contents of one axes int...

19 dagen ago | 0

Answered

Is there a way to combine number of matrices into one?

If you have 1000 arrays, it would be a really bad idea to store them in different variables, e.g. by hinding an index in the nam...

Is there a way to combine number of matrices into one?

If you have 1000 arrays, it would be a really bad idea to store them in different variables, e.g. by hinding an index in the nam...

19 dagen ago | 1

| accepted

Answered

How to exclude zeros in a matrix?

The cell is the right approach: for i = 1:8 Vyy{i} = nonzeros(data_dic_save.displacements(i).plot_v_ref_formatted); ...

How to exclude zeros in a matrix?

The cell is the right approach: for i = 1:8 Vyy{i} = nonzeros(data_dic_save.displacements(i).plot_v_ref_formatted); ...

19 dagen ago | 2

| accepted

Answered

Finding average of every nth row?

This is the mean over 6 subsequent rows: x = rand(9985, 1); S = numel(x); xx = reshape(x(1:S - mod(S, 6)), 6, []); y = su...

Finding average of every nth row?

This is the mean over 6 subsequent rows: x = rand(9985, 1); S = numel(x); xx = reshape(x(1:S - mod(S, 6)), 6, []); y = su...

19 dagen ago | 2

| accepted

Answered

HELP! Bisection method fails to found zero

Simply use the debugger to test, what's going on: https://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-feat...

HELP! Bisection method fails to found zero

Simply use the debugger to test, what's going on: https://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-feat...

19 dagen ago | 1

| accepted

Answered

Alternative to for loop i.e. recursion

Inlined dec2bin(0:2^p-1): M = rem(floor((0:2^p-1).' .* 2 .^ (1-p:0)), 2) Another solution: M = zeros(2^p, p, 'uint8'); n1 =...

Alternative to for loop i.e. recursion

Inlined dec2bin(0:2^p-1): M = rem(floor((0:2^p-1).' .* 2 .^ (1-p:0)), 2) Another solution: M = zeros(2^p, p, 'uint8'); n1 =...

19 dagen ago | 3

Answered

imagesc - size of figure changes content

It does not just look like there is an interpolation, when you resize the image, but of course there is in fact an interpolation...

imagesc - size of figure changes content

It does not just look like there is an interpolation, when you resize the image, but of course there is in fact an interpolation...

19 dagen ago | 0

Answered

How to add thumbnail to a .fig file in Windows 10?

The approach to use the thumbnail of the image in the Windows Explorer is rather indirect. This is not the purpose of the Window...

How to add thumbnail to a .fig file in Windows 10?

The approach to use the thumbnail of the image in the Windows Explorer is rather indirect. This is not the purpose of the Window...

20 dagen ago | 0

| accepted

Answered

Could you please correct my program for single variable but different size and many outputs.

A{1} = '9/027B/029B/02C1/0245/0335/01A8/0365/0110/0335/00D5/0323/00B3/034E/0038/0359/-FFC3/032' A{2} = '023C/031C/0286/02CA/02A...

Could you please correct my program for single variable but different size and many outputs.

A{1} = '9/027B/029B/02C1/0245/0335/01A8/0365/0110/0335/00D5/0323/00B3/034E/0038/0359/-FFC3/032' A{2} = '023C/031C/0286/02CA/02A...

20 dagen ago | 0

Answered

What is the difference between Micro and Macro?

This is the perfect question for your teacher. Remember that we cannot read his or her mind and that she or he is payed for givi...

What is the difference between Micro and Macro?

This is the perfect question for your teacher. Remember that we cannot read his or her mind and that she or he is payed for givi...

20 dagen ago | 0

Answered

How to make a smooth image using the "patch" function ? (and not crenellated)

If you want to export the image as vector graphics, use the 'Painters' renderer. For 3D graphics with transparencies the OpenGL ...

How to make a smooth image using the "patch" function ? (and not crenellated)

If you want to export the image as vector graphics, use the 'Painters' renderer. For 3D graphics with transparencies the OpenGL ...

20 dagen ago | 0

| accepted

Answered

why a is function call from within a function much much slower than not doing it in a function.

This is not a problem, but it shows that Matlab's JIT acceleration works powerful. With the inlined code it seems to recognize, ...

why a is function call from within a function much much slower than not doing it in a function.

This is not a problem, but it shows that Matlab's JIT acceleration works powerful. With the inlined code it seems to recognize, ...

20 dagen ago | 0

| accepted

Answered

mex file only found when in working directory, but not when in search path

The message "The specified module could not be found" means, that the mex function cannot find a required library, most likely...

mex file only found when in working directory, but not when in search path

The message "The specified module could not be found" means, that the mex function cannot find a required library, most likely...

21 dagen ago | 2

Answered

heun mthod 1st order ode

"Using intervals of delta t=1" does not mean h = 0.1; t = 0:h:100; but h=1. Then the 2nd question is easy: [value, index] =...

heun mthod 1st order ode

"Using intervals of delta t=1" does not mean h = 0.1; t = 0:h:100; but h=1. Then the 2nd question is easy: [value, index] =...

21 dagen ago | 2

| accepted

Answered

Ignoring when indexing value positions are invalid

"when o = 24, it will only take the 24 first indces into account" for k = 1:length(mBall) if mBall(k, 4:5) == 0 ...

Ignoring when indexing value positions are invalid

"when o = 24, it will only take the 24 first indces into account" for k = 1:length(mBall) if mBall(k, 4:5) == 0 ...

22 dagen ago | 0

Answered

how to have a variable axis in matlab

Do not change only the XTicks, but adjust the X-values also: x = [1, 2, 3, 4, 5, 5.1, 5.2, 5.3, 5.4, 5.5] y = rand(size(x)); ...

how to have a variable axis in matlab

Do not change only the XTicks, but adjust the X-values also: x = [1, 2, 3, 4, 5, 5.1, 5.2, 5.3, 5.4, 5.5] y = rand(size(x)); ...

22 dagen ago | 0

Answered

memory leaks (simple coding to complex ones)

"The code is clean" - no, it is not clean. You are using the evil eval, which is a desaster for efficient code. Creating variabl...

memory leaks (simple coding to complex ones)

"The code is clean" - no, it is not clean. You are using the evil eval, which is a desaster for efficient code. Creating variabl...

23 dagen ago | 0

Answered

Speeding up IF and comparisons whithin a loop

Do not take the output of the profiler too literally. If this is the first access to the value of X, it might be the time for co...

Speeding up IF and comparisons whithin a loop

Do not take the output of the profiler too literally. If this is the first access to the value of X, it might be the time for co...

23 dagen ago | 0

| accepted

Answered

how can i solve this ,can anyone provide me with code? whats wrong with my code ?

function valid = valid_date(year, month, day) % scalar positive integer limit if isscalar(year...

how can i solve this ,can anyone provide me with code? whats wrong with my code ?

function valid = valid_date(year, month, day) % scalar positive integer limit if isscalar(year...

23 dagen ago | 1

Answered

Circshift matrix by different amount without for loop

Try: n = 8192; spectrums = rand(512, n, 22); shifts = randi(n, 1, 22); tic s1 = cell2mat(arrayfun(@(k) ... ...

Circshift matrix by different amount without for loop

Try: n = 8192; spectrums = rand(512, n, 22); shifts = randi(n, 1, 22); tic s1 = cell2mat(arrayfun(@(k) ... ...

24 dagen ago | 2