Mohammad Sami
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Contribute at least one answer each month for 12 consecutive months
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Solve all the problems in Indexing II
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Solve all the problems in Introduction to MATLAB problem group
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Content Feed
Saving data in a GUI callback function
With app designer you don't need guidata and hobject to store your data. Create properties in your app and then you can access ...
2 days ago | 0
matlab app numeric box wont update real time
include the drawnow command in your loop to force an update to the UI. https://www.mathworks.com/help/matlab/ref/drawnow.html ...
2 days ago | 0
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Subtract element one from element two in a 1x101 row vector.
You can use the subset from 1:end-1 and 2:end to calculate without using the for loop. t = rand(1,101); tsub = t(2:end) - t(1:...
2 days ago | 0
Confusing warning during compilation: Warning: MATLAB preference entry "SMTP_Username" has been removed.
This is the correct behaviour for security reasons. Otherwise this information will be included from the previously set values i...
16 days ago | 0
Delete outliers in each column of a matrix
You can simplify your code like this. % generate test data initmatrix = rand(100,100); initmatrix(12,99) = 1000; initmatrix(...
16 days ago | 0
imwrite, what it does with fractions and negative values
You can change to using random integer function instead of rand function. Also change the image format to png instead of jpg. ...
22 days ago | 0
Plotting data with 5 dimensions
How about you use the stacked chart as you intended and then just change the x axis to display the value of column D. data = [6...
27 days ago | 1
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App designer Tab children automatic resize work on one tab but not the other on app Window resize
Are you using a uigridlayout inside the second tab ? The best way to ensure the desired resizing behaviour is to use uigridlayou...
1 month ago | 1
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How to link x-axis of two plots in one single plot if they have diferent sizes
This Matlab example describes how you can overlay a second Axes object on top of another axes object. https://www.mathworks.com...
1 month ago | 0
Help: Index that Falls above the lower variation limit if more than 50% of the data points in the following 20 point window are also above?
You should create a logical array which is true for a point which is above the limit. Then we use a moving sum with a kf = 20 an...
1 month ago | 0
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Error using ismember function: Input A of class cell and input B of class cell must be cell arrays of character vectors, unless one is a character vector.
I suggest you keep your logic simple. just append the loop number in your filename, thereby avoiding the complicated logic altog...
1 month ago | 0
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Different RMSE in Regression Learner App everytime I start a new Session
The partitions would be randomly initiated. You can set a random number seed before you begin, to try and get the same results. ...
1 month ago | 0
read a variable in an app designer interface from a Matlab script
If you want to be able to access your app inside the script, first create and assign your app to a variable, then you can access...
1 month ago | 0
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Multithread inside class method
You can use a combination of parfeval and data queue object to run your TCP server in parallel. You can write a function that re...
1 month ago | 0
Mean of values before and after a specific element
If you have Matlab version greater then R2017a, you can use filloutliers or you can replace the invalid values with NaN an then ...
1 month ago | 0
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Reading file in subfolders with readtable
use the function fullfile to get the fullpath to the file. fullpath = fullfile(pname,fname); DAT = readtable(fullpath, 'Variab...
1 month ago | 0
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what is the difference between readtable () and datastore() ?
readtable is meant for reading a single file. Datastore are designed for reading multiple files of the same data format. They ar...
1 month ago | 0
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Tabluate data using common terms in varaible names
You can specify the rownames property of the table. a = array2table(zeros(4,4),'RowNames',{'ab' 'ac' 'ad' 'ae'},'VariableNames'...
1 month ago | 0
Show video in App designers
Do you need to get the frames of the video for some reason. If not I propose you use uihtml to display the video instead. The e...
1 month ago | 0
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is there a way to change a certain line using sprintf in textbox in app designer
uihtml supports html. So you will need to generate your text in html format. Then you can set this text as HTML Source a = uiht...
1 month ago | 0
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how to sort the rows in an cell array.
You can try this out. B = {[5,6] [1,2] [5,8]}; [~,i] = sort(cellfun(@(x)sum(x.*power(10,[length(x):-1:1]-1)),B)); B = B(i)
1 month ago | 0
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Import data and plot
Since your filename has a space try put it in double quotes. a = readtable("spectre libs.txt");
1 month ago | 0
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How to substract in table
You can use varfun to subtract the first value in the column from the rest of the values. out = varfun(@(x)x-[0;repelem(x(1),le...
1 month ago | 0
Merging calculated solution elements cell arrays into a single column cell array
You can try using cell2mat to convert the cells into a matrix. a = num2cell(randi(3,[3 1 108])); b = cell2mat(a); b = permute...
1 month ago | 0
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how to generate cell array based on the size of it.
I am bit confused what you mean by should not have 3 by leaving 2 and should not have 2 by leaving 1. I assume you just want t...
1 month ago | 0
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How to generate a Gaussian random variable?
You can use the function randn to generate the random variable as desired. a = 2; % standard deviation b = 0; % mean nrow = 1...
1 month ago | 0
Could anyone help me how to simplify the following code.
I am not sure why you are creating a nested cell array. However you can do it like this. B = arrayfun(@(x,y)cell(x,y),ones(15,1...
1 month ago | 0
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if statement for two arrays
I cannot comment on the chemical engineering side. However assuming that your data have multiple columns and you only want to re...
1 month ago | 0
Is there a Layer to perform L2 Normalization in CNN?
In matlab you can train a SSD Network using the trainSSDObjectDetector Function in computer vision toolbox. Some documentation ...
1 month ago | 0
Configure multiple lines of same Line Properties in a single line?
I think the best you can do is as follows. lines = line([0 0 0 5; 5 5 0 5],[10 0 0 0; 10 0 10 10],'linewidth',3,'color','r','l...
1 month ago | 0
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