Invalidate user entry by using isnan or isempty function
str2double returns NaN (not-a-number) when it cannot convert text to a number. You can therefore simply use isnan to test if a n...

mer än 3 år ago | 0

Combinations of array rows with exclusion
This answer does not have any of the duplicates that are present in my previous answer: A = [20 10;20 15;20 30;22 15;25 10; 30 ...

mer än 3 år ago | 0

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Combinations of array rows with exclusion
OK, so how about this? A = [20 10;20 15;20 30;22 15;25 10; 30 10]; cellArr{1} = deleteOneRow(A); for i = 2:size(A,1)-4 ...

mer än 3 år ago | 1

Code for action when ui toggle button is pressed
Yes, that's indeed the problem - the selected button never changes because you only have one button in the button group, so the ...

mer än 3 år ago | 1

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error on using fplot
Your solution usol contains two symbolic variables, x and d, but fplot can only deal with functions of a single variable. I supp...

mer än 3 år ago | 0

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Display same image with different rotations
I assume you are talking about 2D images: % prepare an image but hide it initially (for better timing) h = imagesc(peaks, 'Vis...

mer än 3 år ago | 0

Combining Two plots with different with the same y axis and different x axis length
If the widths of your two plot boxes have an integer ratio (such as 4:1), you can use tiledlayout to do this. First create one r...

mer än 3 år ago | 0

How do I write a code to rearrage the colors in an RGB color array?
The third dimension of your 229x600 image contains the rgb values for each pixel: image1(:,:,1) is the red channel, image1(:,:,2...

mer än 3 år ago | 1

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Finding the sum of the first n primes and to use a while function
There are two issues in your code: You are testing if i is not a prime number, when you actually want to test whether it is a p...

mer än 3 år ago | 0

MATLAB Figure and LATEX
I'm not sure what the issue is, but your figure displays just fine when I save it to a png file (my preferred graphics file form...

mer än 3 år ago | 0

Merging two arrays of two different types
You are combining double values (from a) with character values (from b), which yields a character array according to MATLAB's cl...

mer än 3 år ago | 1

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How Can I Show a txt File in a GUI ?
A text area would be the way to go, as it will show a scroll bar and wrap text if the content of the textfile is larger than the...

mer än 3 år ago | 0

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Count if a vector has at list one element greater than zero
count = sum(v>0) The expression v>0 creates a logical array of 1s and 0s, with a 1 for every element of v that is greater than ...

mer än 3 år ago | 0

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Equation in a single column matrix?
When I run your code (after fixing a typo when you refer to what I think should be b(n)/13), the result is a 1-by-6 array for c:...

mer än 3 år ago | 1

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evaluation of anonymous function
I am not quite sure if this is what you are asking, but I'll give it a shot: The piece of code important to your question is r...

mer än 3 år ago | 1

Adding a pathdef.m file, as a string, to the current path
You probably want to use textscan for this: fileID = fopen('pathdef_etc.m') C = textscan(fileID, '%s', 'Delimiter', '\n') fcl...

mer än 3 år ago | 1

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how to define a gradient colormap
Yes, you can use a fixed colormap by executing the following command each time you plot an image: caxis([-1 1]) This will map ...

mer än 3 år ago | 1

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Index a cell array with an cell
Hi Christian, You can pick the corresponding entries for each of the cells of C as follows: C{i}(B{i}==0) The results are the...

mer än 3 år ago | 0

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

mer än 3 år ago

Delete values in a table but keep the cells
Try df{r,c} = {''} instead. You should be able to avoid the inner loop entirely by using df{r,3:nCols} = {''} Also, to check...

mer än 3 år ago | 0

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