回答済み
How to increase number of colors in colorbar, and how to draw boundaries of regions?
doc colormap allows you to change the colourmap that is used. You can either choose from already created Matlab colourmaps or ...

7年以上前 | 0

回答済み
How to replace values less than equal to zero values in a matrix?
myMatrix( myMatrix <= 0 ) = NaN

7年以上前 | 4

| 採用済み

回答済み
Background subtraction in an RGB Image
Well, you can do something like this: rgb = rand( 5, 5, 3 ); % Random image rgb( 2, 3, : ) = [0 0 0]; % Turn a pixel black rg...

7年以上前 | 0

回答済み
How do I make an array of numbers in the titles of a structure?
for n = 1:numel(U) u(n) = double( FU_antwoord.( ['U' num2str(n + 1)] ) ) end will put them in an array. Creating ...

7年以上前 | 0

| 採用済み

回答済み
How do I stop the loop continuously going without giving a final answer? It is two separate functions that link together.
You are running a while loop on the variable |error| (which incidentally is a function name so you should not name a variable th...

7年以上前 | 0

回答済み
Why does matlab scale x-axis automatically
plot( x, y ) plots the values you want on the x axis. plot( y ) as you have done just defaults to using indices alo...

7年以上前 | 1

| 採用済み

回答済み
I am trying to write a function for the Gamma Correction, this is what I have so far. the problem is the intensities of the output image is either 0 or 255. what am I doing wrong?
double(pixel/255) will divide pixel by 255 _then_ convert to a double. Assuming your image is an 8-bit integer data type t...

7年以上前 | 0

| 採用済み

回答済み
K-means on a gray scale image
1. kmeans only supports double or single inputs. It works in floating point so integers wouldn't make sense. 2. doc re...

7年以上前 | 0

| 採用済み

回答済み
I am trying to use K-means on a grayscale image
Without being able to run your code (I don't have 'lena.bmp' and can't be bothered to try to find it!), I is going to be of type...

7年以上前 | 0

回答済み
abstract class using implemented methods
Your functions are all static so they have no object scope. To override base class functions and have the code call the version...

7年以上前 | 0

| 採用済み

回答済み
How to change the scale of the x-axis & y-axis?
doc interp2 is likely what you need if you want finer resolution to get rid of step-like features, but how was anyone to in...

7年以上前 | 0

回答済み
loop for while etc
n = 0:100000; s = 0.5 * sin( n / 33 );

7年以上前 | 0

回答済み
Output argument 'y' is not assigned on some execution paths
I can't be bothered to manually check every single |if| condition, but that error is telling you that with some inputs you gave ...

7年以上前 | 0

| 採用済み

回答済み
how to form feedback loop to change input?
Put the relevant part of the code in a while loop with the condition while Dm < -1 || Dm > 1 % Your main code here ...

7年以上前 | 0

| 採用済み

回答済み
It's just an example but how can i change parameters i,j also inside the function fprintf, in the part 'let t_t[i,j]'? is there any other way to change this formulation to satisfy this request? thank you so much
fprintf('let t_t[%i,%i] = %f\n', i, j, temp(i,j)); should work.

7年以上前 | 0

回答済み
arrayfun with multiple inputs and a different size output
c = arrayfun( @(x,y) rand( x, y ), 1:4, 3:6, 'UniformOutput', false ) works fine to produce outputs that are matrices. If ...

7年以上前 | 0

回答済み
how to display colorbar levels from '-10^6' to '10^6' ?
c = colorbar; labels=arrayfun(@(c)['10^',int2str(c)],-6:6,'uniformoutput',false); set( c, 'TickLabels', labels, 'Tic...

7年以上前 | 0

回答済み
Creating a new string matrix
s = string( {'abc';'ef';'xyz'} ) or s = [ "abc";"ef";"xyz" ] work, but your start point there is not valid syntax ...

7年以上前 | 0

| 採用済み

回答済み
Copy the curve in the Axes of a Figure to the Axes of a GUI
If you have the handle of figure 1 as hFig then hLine = findobj( hFig.CurrentAxes, 'Type', 'line' ) or hLine = fin...

7年以上前 | 1

| 採用済み

回答済み
extracting first letter from the cell
res = cellfun( @(x,y) [x(1) y(1)], nam1, nam2, 'UniformOutput', false' ) works fine for me on your example, but then so doe...

7年以上前 | 0

回答済み
Parsing varargin for a function called with values only instead of name-value pairs
function add_to_database(db, bird, where, when) if ~isempty( bird ) bird = validatestring( bird, { 'robin', 'car...

7年以上前 | 0

回答済み
How to assign values to a sparse matrix without iterations?
i = repmat( 1:size( Nonloc ), [1 2] ); j = Nonloc(:) s = sparse( i, j, 1 );

7年以上前 | 0

| 採用済み

回答済み
Add values to vector
B( B == 1 ) = A

7年以上前 | 0

回答済み
How to combine two arrays?
[x; y]

7年以上前 | 0

回答済み
What is missing from MATLAB?
As a regular user of object oriented programming one of the things I miss most from C++ (where I started) is the ability to pass...

7年以上前 | 1

回答済み
How to change output ans?
doc format

7年以上前 | 0

| 採用済み

回答済み
How to maintain the same "xticks" and "yticks" for multiple plots?
doc linkaxes or doc linkprops if you need more fine control, but linkaxes should work fine, using the 'y' argument ...

7年以上前 | 1

| 採用済み

回答済み
Calling a function with 2 inputs using only a single input
It depends how you want to handle it. Do you want 'b' to be an optional argument or do you want to force the caller to always gi...

7年以上前 | 1

| 採用済み

回答済み
How to replace k-th diagonal by vector?
P is defined as a matrix of all zeros and you appear to be overwriting the 'diag' function with a variable of the same name whic...

7年以上前 | 1

回答済み
Function handle to randomly select the rows of ifft matrix for compressed sensing
f = @( ) randi( numRows );

7年以上前 | 0