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Content Feed
Multi-batch csv processing error
Hi Denxybel, the main problem lies in the readtable statement. Althought the documentation states that "by default, readtable cr...
9 meses ago | 0
| accepted
how to identify a string in an external text file and save the text of the two following lines in arrays, by delimiters
% open textfile fid = fopen('myfile.txt'); % read line by line until the pattern is found pattern = 'A C G Y R E'; tline =...
9 meses ago | 0
| accepted
delete NaN values from Matrix & use Matrix for other operations
% Sample arrays A = [1; 2; 3; 4; NaN; 6; NaN; 8; 9; 10]; B = [NaN; 12; 13; NaN; 15; 16; 17; 18; 9999; 20]; We want to get rid...
9 meses ago | 0
| accepted
How to substract a loop from the first 10 cell values of the loop?
Would this work? X(2,n) = X(1,n) - X(1,mod(n-1,10)+1)
9 meses ago | 0
| accepted
Find location of exact string
regexp(data, '\<sine delta 2') The \< indicates that the search string must occur at the beginning of a new word - see MATLAB r...
9 meses ago | 1
| accepted
Find location of exact string
Starting with R2020b, you can use pattern with strfind, which allows you to only find matches if they are preceded by a nonlette...
9 meses ago | 0
a function generating a square matrix
A = [11, 12, 13, 14; 21, 22, 23, 24; 31, 32, 33, 34; 41, 42, 43, 44] A comma (optional) starts a new column in a matrix, while ...
9 meses ago | 0
How make mutiple plots in one plot
The issue is that you are opening your files in the first loop, one after another, but only the last opened file will be process...
9 meses ago | 0
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Convert a structure array to a list
c = struct2cell(sol); ilaplace([c{:}].')
9 meses ago | 0
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How to output a for loop as a table with each iteration and result displayed
Hi Jorge, First preallocate your table (outside the loop) according to the number of years in your list: T = table('Size', [nu...
9 meses ago | 0
ode45 for non linear ODEs
The solution below follows closely the "Solve Nonstiff Equation" example in the ode45 documentation. We first need to write an...
9 meses ago | 0
Extract x,y,z coordinates from figure
Hi Aidan, let's take the peaks surface plot as an example for a 3D surface plot. We create a table from the surface data and wri...
9 meses ago | 0
When i covert a structure to cell array, my fieldNames disappear
Shambhavi, you can use fieldnames to extract the fieldnames from your structure and add it to the end of your new cell array. Fo...
9 meses ago | 0
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...
9 meses 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 ...
9 meses ago | 0
| accepted
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 ...
9 meses 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 ...
9 meses ago | 1
| accepted
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...
9 meses ago | 0
| accepted
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...
9 meses 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...
9 meses 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...
9 meses ago | 1
| accepted
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...
9 meses 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...
9 meses 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...
9 meses ago | 1
| accepted
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...
9 meses ago | 0
| accepted
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 ...
9 meses ago | 0
| accepted
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:...
9 meses ago | 1
| accepted
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...
9 meses 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...
9 meses ago | 1
| accepted
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 ...
9 meses ago | 1
| accepted
