1,839 total contributions since 2014

Professional Interests: Signal Processing, OOP, Matlab GUI programming, Machine Learning

Answered

Define function for rounding to precision

Usual scenario would be to multiply by 10^decimalPlaces, ceil and then divide by 10^decimalPlaces I would imagine. e.g. ceil( ...

Define function for rounding to precision

Usual scenario would be to multiply by 10^decimalPlaces, ceil and then divide by 10^decimalPlaces I would imagine. e.g. ceil( ...

9 days ago | 1

Answered

How to plot the curve?

R = B ./ ( 1 + k'/2 ); figure; plot( R ) or R = bsxfun( @rdivide, B, ( 1 + k'/2 ) ); for earlier versions of Matlab that don...

How to plot the curve?

R = B ./ ( 1 + k'/2 ); figure; plot( R ) or R = bsxfun( @rdivide, B, ( 1 + k'/2 ) ); for earlier versions of Matlab that don...

15 days ago | 0

| accepted

Answered

max value in a repetitive vector

maxes = [vec( diff( vec ) < 0 ), vec(end)]; works if it is as structured as your example always, where vec is your vector. If ...

max value in a repetitive vector

maxes = [vec( diff( vec ) < 0 ), vec(end)]; works if it is as structured as your example always, where vec is your vector. If ...

15 days ago | 1

| accepted

Answered

How can I download matlab R2016a?

Click on your symbol in the top-right of this page, next to the telephone icon and click on 'My Account'. In your licencse list...

How can I download matlab R2016a?

Click on your symbol in the top-right of this page, next to the telephone icon and click on 'My Account'. In your licencse list...

15 days ago | 0

Answered

Group maths on for loop

omegas=0:1:10; RR=40:70; d=90; numOmegas = numel( omegas ); numRR = numel( RR ); gg = zeros( numOmegas, numRR ); for i=1...

Group maths on for loop

omegas=0:1:10; RR=40:70; d=90; numOmegas = numel( omegas ); numRR = numel( RR ); gg = zeros( numOmegas, numRR ); for i=1...

15 days ago | 0

Answered

How to work the Mean function

doc mean shows you the syntax of the mean function. It expects an array, not multiple arguments. Generally you take the mean ...

How to work the Mean function

doc mean shows you the syntax of the mean function. It expects an array, not multiple arguments. Generally you take the mean ...

15 days ago | 0

| accepted

Answered

returning an object handle from a function

Try passing in gobjects(0) instead. Yours works fine for me in Matlab, but maybe from simulink it is different and the type o...

returning an object handle from a function

Try passing in gobjects(0) instead. Yours works fine for me in Matlab, but maybe from simulink it is different and the type o...

18 days ago | 0

Answered

R2014b uipanel not showing on figure.

You need to define Units ahead of Position else the Position will be interpreted in default units (which are 'normalized') befor...

R2014b uipanel not showing on figure.

You need to define Units ahead of Position else the Position will be interpreted in default units (which are 'normalized') befor...

24 days ago | 0

| accepted

Answered

Delete empty field - rows in a structure

Added as an answer since it seemed to solve the problem. Track_20( all( cell2mat( arrayfun( @(x) structfun( @isempty, x ), Trac...

Delete empty field - rows in a structure

Added as an answer since it seemed to solve the problem. Track_20( all( cell2mat( arrayfun( @(x) structfun( @isempty, x ), Trac...

29 days ago | 2

| accepted

Answered

Scale X and Y separately in a matrix

B = imresize(A,[numrows numcols]) is the second syntax given in the documentation. If you pass in a numrows the same as the cu...

Scale X and Y separately in a matrix

B = imresize(A,[numrows numcols]) is the second syntax given in the documentation. If you pass in a numrows the same as the cu...

1 month ago | 1

Answered

For Loop Problem error

img=imread('C:\Users\Shalaw\Downloads\gray.jpeg'); [n,m]=size(img); part{1}=img(1:n/2,1:m/2); part{2}=img(1:n/2,(m/2)+1:end...

For Loop Problem error

img=imread('C:\Users\Shalaw\Downloads\gray.jpeg'); [n,m]=size(img); part{1}=img(1:n/2,1:m/2); part{2}=img(1:n/2,(m/2)+1:end...

1 month ago | 0

| accepted

Answered

master study: requirements for laptop and windows version

A 5 second google search brought me to this: https://uk.mathworks.com/support/requirements/matlab-system-requirements.html

master study: requirements for laptop and windows version

A 5 second google search brought me to this: https://uk.mathworks.com/support/requirements/matlab-system-requirements.html

2 months ago | 0

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Answered

Colorbar colors wont scale to changed scale limits

You should be using doc caxis to change colourmap limits, not directly going into the colourbar object and changing its ylims....

Colorbar colors wont scale to changed scale limits

You should be using doc caxis to change colourmap limits, not directly going into the colourbar object and changing its ylims....

2 months ago | 0

| accepted

Answered

Create an Array/a List of Position

Position_List = reshape( position', 1, [] );

Create an Array/a List of Position

Position_List = reshape( position', 1, [] );

2 months ago | 0

Answered

How to remove hundreds of columns from a matrix?

First thing that comes to mind, which may or may not be the only problem: Never delete parts of an array from the front in a lo...

How to remove hundreds of columns from a matrix?

First thing that comes to mind, which may or may not be the only problem: Never delete parts of an array from the front in a lo...

2 months ago | 1

| accepted

Answered

Find all combinaisons of sum of two vector that corresponds to the value of a third vector

Well, what you wrote: 1./(1./A + 1./B) will give you answers you can compare to C as e.g. abs( 1./(1./A + 1./B) - C ) to giv...

Find all combinaisons of sum of two vector that corresponds to the value of a third vector

Well, what you wrote: 1./(1./A + 1./B) will give you answers you can compare to C as e.g. abs( 1./(1./A + 1./B) - C ) to giv...

2 months ago | 0

Answered

imagesc: how to set NaN as white color

doc colormap allows you to define whatever colourmap you want. You can tag a white point on the front of e.g. a Parula colourma...

imagesc: how to set NaN as white color

doc colormap allows you to define whatever colourmap you want. You can tag a white point on the front of e.g. a Parula colourma...

3 months ago | 1

Question

javaaddpath 'objects of...class exist' warning

I have run into a situation using multiple 3rd party functions from the file exchange. Both of these rely on java classes and b...

3 months ago | 0 answers | 0

Answered

Removing outliers from data

threshold = 3 * std( data ); validRange = mean( data ) + [-1 1] * threshold; dataWithoutOutliers = data( data >= validRange(1)...

Removing outliers from data

threshold = 3 * std( data ); validRange = mean( data ) + [-1 1] * threshold; dataWithoutOutliers = data( data >= validRange(1)...

3 months ago | 1

| accepted

Answered

finding x axis in findpeaks

doc findpeaks clearly shows there are numerous ways to call the function, including: [pks,locs] = findpeaks(data) where locs ...

finding x axis in findpeaks

doc findpeaks clearly shows there are numerous ways to call the function, including: [pks,locs] = findpeaks(data) where locs ...

3 months ago | 0

| accepted

Answered

multiply table and matrix

Why all the complications with cell arrays and tables? Just use numeric arrays: A = [0.2 0.5 0.3; 0.1 0.1 0.3]; B = [2;3]; C...

multiply table and matrix

Why all the complications with cell arrays and tables? Just use numeric arrays: A = [0.2 0.5 0.3; 0.1 0.1 0.3]; B = [2;3]; C...

3 months ago | 1

Answered

Randomly change certain characters of a character matrix

If you mean basic letters, then e.g. idx = randi( numel( yourCharArray ), 1000, 1 ); replacementChars = char( randi( 26, 1000,...

Randomly change certain characters of a character matrix

If you mean basic letters, then e.g. idx = randi( numel( yourCharArray ), 1000, 1 ); replacementChars = char( randi( 26, 1000,...

3 months ago | 0

| accepted

Answered

How can I use Function handle with arrays?

Not really sure how the code you posted, with syms and matlabFunction is connected to what you are asking, but this function sho...

How can I use Function handle with arrays?

Not really sure how the code you posted, with syms and matlabFunction is connected to what you are asking, but this function sho...

3 months ago | 0

| accepted

Answered

Select all eelements equal to a number

b = x( 1:find( x == 4, 1, 'last' );

Select all eelements equal to a number

b = x( 1:find( x == 4, 1, 'last' );

3 months ago | 0

| accepted

Answered

Turning separate columns of data into a single column or vector.

times = []; for ... ... times = [ times; A.data(:,1) ]; ... end You will get warnings about variable growing in...

Turning separate columns of data into a single column or vector.

times = []; for ... ... times = [ times; A.data(:,1) ]; ... end You will get warnings about variable growing in...

3 months ago | 0

| accepted

Answered

Apply an element-wise calculation of an equation to a matrix

log( X ./ Y ) ./ Z 100 ./ log( X ./ Y ) - 50

Apply an element-wise calculation of an equation to a matrix

log( X ./ Y ) ./ Z 100 ./ log( X ./ Y ) - 50

3 months ago | 0

| accepted

Answered

Find function for cell array

wantedArray = [1,122,185]; cellfun( @(x) isequal(x,wantedArray), myCell ); You would be better off using a numeric array thoug...

Find function for cell array

wantedArray = [1,122,185]; cellfun( @(x) isequal(x,wantedArray), myCell ); You would be better off using a numeric array thoug...

4 months ago | 1

Answered

What are the thought processes that go on when you are trying to solve a MATLAB problem?

I make very heavy use of the debugger, in combination with the command line to try out syntax and options. I also often like to...

What are the thought processes that go on when you are trying to solve a MATLAB problem?

I make very heavy use of the debugger, in combination with the command line to try out syntax and options. I also often like to...

4 months ago | 1

| accepted

Answered

Accesing structure using a function

total = campus.( building ).( year ).( var ); should work fine, assuming campus is your struct and that is a branch of the stru...

Accesing structure using a function

total = campus.( building ).( year ).( var ); should work fine, assuming campus is your struct and that is a branch of the stru...

4 months ago | 0

| accepted