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Extracting "endpoints" from a skeleton image to enable a circle to be defined.
This can probably be improved, but this will find an approximate circle. It will slightly underestimate the radius, as it tries ...

約6年前 | 1

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Fit two data sets with 3 fit parameters, one parameter is the same
As far as I'm aware, you can only fit a single function at once, so you can try something like this: f1 = @ (p,x1) p(1)./sqrt((...

約6年前 | 1

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Matlab system command doesn't work properly on linux platform
If you want to capture the output to a Matlab variable, you should use the second output: [status,response]=system('hostname -s...

約6年前 | 0

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I had write the function for find the difference of maximum and minimum from each martix row and express it as matrix .
If you want a column instead of a row, why not transpose? And if you want both outputs, you will have to use a syntax with two o...

約6年前 | 0

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how to run a code putting conditions on names cell
Convert the array to a 3D array: (patient,session,param_index). You can fill missing slots with NaN. That way it is just a matte...

約6年前 | 0

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How to suppress warnings when running Simulink simulation programmatically?
Unless Simulink is not playing nice, this should work: ... w=warning('off','all'); sim('rocket_sim'); warning(w); fprintf('...

約6年前 | 0

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find groups in datetime vector by date
Datetimevector=datetime([2020 2020 2020],[02 02 10],[3 3 4],[10 11 12],[0 0 0],[0 0 0]); rounded_to_day=datetime(year(Datetim...

約6年前 | 0

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Does course completion certificate will be provided for free courses?
Assuming you are talking about Matlab Academy: yes, you will be able to download a pdf with a certificate.

約6年前 | 0

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intro to programing MATLAB, Matrix
You can use the colon to index all values in a dimension: IMG(2,2,:)=[100 255 255];%assign RGB values to a pixel You can also ...

約6年前 | 0

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change the colormap of a figure using another GUI
Whenever you are working with a GUI: use explicit handles. Many functions accept handles to the affected object as an input, col...

約6年前 | 0

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about strings properties issstrprop
You forgot the 's' switch with your call to input: s= input('s: ','s'); isstrprop(s, 'alpha')

約6年前 | 0

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If else statement problem
ca is already smaller than 50 at the start of the loop, so the content of the while loop doesn't run. You could find this out...

約6年前 | 0

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The min and max function return incorrect result!
You didn't notice the exponent: max(Features) ans = 1.0e+09 * If you want to control how your data shows up in ...

約6年前 | 1

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combining text files from separate folders to one text file using for loop
for n_file=1:3%or use dir() to find which files you have fname_max=sprintf('tmax_%d',n_file); data_max=___%read data t...

約6年前 | 1

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How can I replace an inline function with a anonymous function?
a=input('Insert a number: '); Example=@(x) x.^a; disp(Example(10)) Alternatively, you can use str2func to create a function h...

約6年前 | 0

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Explanation of cellfun()
cellfun will apply your function to the contents of you cell array. There are 3 ways to specify the function: as a char array (...

約6年前 | 1

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n nearest non NaN values
You can use fillmissing: B=fillmissing(A,'nearest');%replace NaN with nearest non-NaN value

約6年前 | 0

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Comand window answer is wrong while the values in variable are ok. the x values in comand window is repeated and not in sequence
You are printing the full arrays in your fprintf statement. You also forgot to pre-allocate your arrays, and you forgot to write...

約6年前 | 0

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How to delete all repeat rows?
There is probably a more efficient way, but you can use unique() to get all first occurrences. Then you can use the second outpu...

約6年前 | 0

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How to get XYZ coordinates of all non-zero voxels in a 3D volume?
If you want to hide a bit of the implementation that Ameer showed you: I have extended the capabilities of find to more dimensio...

約6年前 | 0

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How to extract specific data from multiple .mat files
You need to think about how you want to store your data. The code below will store everything in a cell array, but it would prob...

約6年前 | 0

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I get this error message for this code: Array indices must be positive integers or logical values.
Check if you have shadowed any function with a variable. Simply by running your code in a clean workspace I found some typos. Th...

約6年前 | 0

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Storage of first few values in an array but with an if condition
If you want to find the first block of true in L, you can use this code: A = [0.25;0.12;0.18;0.21;0.26;0.18;0.19;0.25;0.26;0.12...

約6年前 | 0

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How can I fit 3 datasets with individual fit functions, which all share some fit parameter?
You need to define a single cost function. OLS=sum((f(b,x) - y).^2);%Ordinary Least Squares You can use the fminseach function...

約6年前 | 0

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i want to take each row in matrix
Trivial with the color operator: clc data=[0 0 ;0 0 1;0 0 1;1 1 1;0 1 1;1 0 1;1 1 1]; for n=1:size(data,1) tmp=data(n,:)...

約6年前 | 0

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How to include arrows as pointers of a particular point in plot?
A completely different strategy would be to use the LaTeX interpreter to insert an arrow as a text object: x = 0:pi/20:2*pi; y...

約6年前 | 1

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How to move slider-bar with a step-size of two?
Round the Value property to the nearest value in your array in the callback function. allowed_vals=1:2:10;%better: store this i...

約6年前 | 2

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xtixks in 2d plot
datetick seems a good place to start. Otherwise you can see if the xtickformat function suits your need.

約6年前 | 1

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Writing a 3x3 matrix as the 3rd and 4th dimesions of a multidimenstioanl array
This should work: [covRGBa,aveRGBa] = covary(RGB,r,c,xleft,xright,ytop,ybottom,n,perimeter); aveRGB(c,r,:)=aveRGBa; covRGB(c,...

約6年前 | 0

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Not enough input arguments.
I'm going to ignore the decision to use global variables (especially so many, and with such short names). You ran the function ...

約6年前 | 0