Answered
c0 and x are scalars, c - vector, and p - scalar. If c is [ ], then p = c0. If c is a scalar, then p = c0 + c*x . Else, p =
function y = mypolyval(c0,c,x) if isempty(c) y = c0; else y = c0 + power(x, 1:numel(c))*c(:); end Th...

7 years ago | 2

| accepted

Answered
How to remove duplicates in a specific manner?
B = unique(unique(A, 'rows')', 'rows')'

7 years ago | 0

Answered
if i want to plot a graph as i have shown in the figure, but at one particular angle without any radius...how should i do it ? l
axis([-1 1 -1 1]), axis equal angle = 30; line([0 cosd(angle)], [0, sind(angle)])

7 years ago | 0

Answered
how to write this for cycle
You have to use a cell array because your indices have different sizes e = 6:12; for i = 1:numel(e), x{2^e(i)} = 0:1/2^e...

7 years ago | 0

Answered
Check for existence of nested fields
You can use my function isnestedfield: function yn = isnestedfield(s, fields) %ISNESTEDFIELD True if nested fields are i...

7 years ago | 2

| accepted

Answered
How can i create a large colum variable with continious step?
You don't need a loop, you can use Matlab's colon operator to define a range of values first_value:step_size:last_value. You can...

7 years ago | 1

Answered
Searching for math expert! angle of vectors in a loop using law of cosines
See also <http://www.wikihow.com/Find-the-Angle-Between-Two-Vectors> % define sample values x = [1234.77 936.40 681.39...

7 years ago | 1

| accepted

Answered
Extract values from matrix/cell in single step
Have a look at <https://de.mathworks.com/matlabcentral/answers/121045-assigning-multiple-outputs-from-a-vector> and <https...

7 years ago | 1

Answered
how delete all the negative values
x = x(find(x < 0, 1, 'last'):end);

7 years ago | 0

| accepted

Answered
How to find even positioned numbers in a vector or matrix.
if size(M,1) > 1 & size(M,2) > 1 res = M(2,2); else res = []; end

7 years ago | 0

| accepted

Answered
How to plot x=f(y) ?
Instead of plot(x,y), you plot(y,x) x = linspace(-3,3); plot(x.^3+x.^2-x+6, x), xlabel('y'), ylabel('x')

7 years ago | 0

Answered
Generating an "all-combinations" matrix for a given vector
x = [2 3 4]; n = prod(x); for i = 1:numel(x) li = []; for ii = 1:x(i), li = [li repmat(ii, [1 n/prod(x(1:i))])]; en...

7 years ago | 0

| accepted

Answered
Round each value of matrix
totaircraft = round(totaircraft);

7 years ago | 0

Answered
what is meant by index exceed matrics dimension?
If you have a 1 x 3 matrix A = [6 7 9] and try to access an element that does not exist, like A(2,3) or A(1, 4), you get ...

7 years ago | 0

Answered
Change element of a matrix in a row
help imfill

7 years ago | 0

Answered
Plotting points across the Sine Curve
plot(t, y) hold on ind = find(diff(y>0)<0); plot(t(ind), y(ind), 'ko') ind = find(diff(y>0)>0); plot(t(ind)...

7 years ago | 0

| accepted

Answered
How would I check to see if the number of rows in one matrix are equal to the number of rows in another matrix?
You can use assert assert(size(A,1) == size(B, 1), 'Matrices have different numbers of rows.') If the condition given as...

7 years ago | 0

Answered
Detail lost showing images
900 x 1800 is pretty large. You can check the screen size using get(0,'ScreenSize') If your image fits on the screen...

7 years ago | 0

| accepted

Answered
I understand the point of asking a question is to not automatically be given the answer. However I have no clue how to even approach the given questions that are mentioned below. I looked up a way to do it on the Matlab website already but am lost.
function g = grade(num) if num < 60 g = 'E' elseif num < 70 g = 'D' and so on.

7 years ago | 0

Answered
What font can I use to match my text to greek letters?
In which way are Matlab's default fonts for Greek and other characters not matching? You can change various properties, such...

7 years ago | 0

Answered
Ignore answers with imaginarey components
This is basically the implementation of Dr. Siva Srinivas Kolukula's answer: ind = ~isreal(C); A(ind) = []; B(ind) = [];...

7 years ago | 0

Answered
How to polarplot theta=3*pi/4 ?
theta = 3/4*pi; plot([0 cos(theta)], [0 sin(theta)]) axis equal axis([-1 1 -1 1])

7 years ago | 0

Answered
Apply a filter to an image
help imfilter

7 years ago | 0

Answered
converting matrix into image
I = im2double(imread('circuit.tif')); imshow(I)

7 years ago | 1

Answered
how to run a certain code loop for 'N' times and get 'N' number of output outside the loop.
You don't need the loop: A = rand(3, 5, N);

7 years ago | 1

Answered
How can I keep figures invisible when going between different figures and different subplots?
Don't use figure(2) but set(0, 'CurrentFigure', f(2)) where f(2) is the handle of figure 2, obtained with gcf wh...

7 years ago | 0

| accepted

Answered
How to change gap between legend line and legend text?
You can increase the space by adding blanks ' ' in front of the legend entries. This is a hack, of course.

7 years ago | 0

| accepted

Answered
How to draw nice dotted lines?
Check out <https://de.mathworks.com/matlabcentral/fileexchange/15743-fix-dashed-and-dotted-lines-in-eps-export>

7 years ago | 1

Answered
How can I plot an average line through this line graph
You store the values of each line in the rows of matrix X. Then use plot(mean(X))

7 years ago | 2

Answered
I need to take characters out of a string using isnan and str2double.
cellfun(@(x) sscanf(x, '%f'), regexp(a, '(\d+)', 'match'))

7 years ago | 0

| accepted