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How to run all the external files with same extension .bat within the same folder in MATLAB r2018b
Use dir to create a list of all the bat files. Then you can use either dos or system to run each of them in a for loop.

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I want to include a vertical line on the histogram, so it shows the location of the mean. The mean value is 5.12, how can I modify this code?
You are not plotting a vertical line. The coordinates you're using are (0,y_min) and (5.13,y_max), which is not a vertical line....

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format short, format long, format short E, format long E, format rat
For a single value I would suggest the fprintf function: v=1234567.1234567; fprintf('%.7f\n',v)

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Roll a 6-Sided Die and Compute the Probability of the Sum (with bar graph)
The Matlab way would be to use an array. If you read the documentation for randi you will see how you can generate a matrix with...

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Help! Display Issues
doc disp As for your function: function fee = ParkingFees(t) %One line description of this function goes here % %function d...

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How to check for size of input vector
Start by uncommenting the line with input. Next you need to think how to compare vectors. You can do something complicated, but...

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Plotting using a for loop
You are forgetting to index your y variable. In general it is easier to write your code like this in such cases: x = 0: 0.1 : 1...

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I can't write recursive function in Matlab (Please help me)
In case you just want to know how to create a recursive function at all: function n=I_call_myself(n) disp(n) if n>0 n=I_...

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Need help making my riddles work
You should use the debugger to go through your code line by line and see what is happening with your variables. You are overwri...

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Anonymous Function soustraction problem with a parameter
You were not actually evaluating the function for values of f; you were entering the anonymous function as a char array. %verif...

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Evaluate function over a mesh grid (without for loops)
You have to vectorize the function and split it into two steps: Jfun = @(x,y) (17*x.^2)/2 - 14*x.*y - 40*x + 19*y.^2 - 20*y; u...

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plot bar with two colors
If you insist on separate bar objects you can use the first part, if not, you can use the second part figure(2),clf(2)%ensure a...

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Processing txt multiple files in a folder and saving them using the original name but different format
Something like this should work: %replace this: filename = files(i).name; addpath('sorted_csv') dlmwrite(filenam...

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save an algorithm and call it
Store this in thomas.m function z=thomas(Ac,b,p_minus_2) %solving linear system with Thomas algorithm % % More explanation a...

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Recursion function in matlab
function n=I_call_myself(n) disp(n) if n>0 n=I_call_myself(n-1); else disp('n has reached 0') end end

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saving all data from for loop after image processing
You should use the '-append' option if you don't want to overwrite your text file every iteration.

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Splitting an array up
You can modify the row indices you feed to mat2cell: data=rand(64,92690);%generate random data div=2048; c=div*ones(1,ceil(...

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Ternary plot in MATLAB
The TrianglePlot function I posted on the FEX seems to work just fine (although I decreased the number of points for this exampl...

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Plot data for unique temperatures imported from text file
%% code starts here r_data = importdata('reactions.txt'); %reaction_data = r_data.data; %fid=fopen('reactions.txt'); t = rea...

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Pair of dice always rolled until all results happened between (2-12) ..Expected value of throws to find
Since this is homework I won't give a complete solution, but I will give hints. If you have trouble implementing these, feel fre...

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How can i extract the value of an element of a sparse double?
You can convert the result to a full matrix. Indexing only extracts part of the array, but doesn't influence the sparse property...

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How do you average each pixel in an image with a 9x9 square?
If you want the average (or something like a gaussian blur): use conv2, as described in the answer you linked. Read the document...

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Running same program is giving different plot
Clear all should only exist exactly once in your entire code base. Replace it with clear or clearvars. If you want to have re...

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Reshaping a Char Array
This should do it: A = ['12';'12';'12';'12';'12';'12';'12';'12';'34';'34';'34';'34';'34';'34';'34';'34';'56';'56';'56';'56';'56...

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How to draw a inscribed circle having maximum radius inside the binary image. I have already identified the centroid of the object.
If you invert your image, you can use bwdist to find the point furthest from the edge. That distance is by default the radius of...

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For Loop. My goal is for my code to recognize if the user inputs an empty 'grade' and then to loop back into itself until the user enters 10 grade values individually.
I would suggest using a cell array initially, which you can convert to a normal array after the loop. That way you can use the i...

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How do I store values from a while loop and plot the values in fonction of the number of iteration?
Indices in Matlab need to be positive integers. You should create a separate time vector. And don't forget to index Temp, other...

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minify Matlab code (minimize number of characters)
It took some time, but here is my solution. Strip all comments and line continuations. Sort the functions (putting the entry f...

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

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How can I create a Matrix according to a formula?
Learn about meshgrid and/or ndgrid. (assuming you mean D(i,j) instead of D(ij))

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