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I get complex numbers while using "acosd" function
Probably you might have evaluated the equation using incorrect parenthesis enclosing only the dot product for acosd function an...

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Use cmd to execute .exe
Use a fullfile function to read the files from whichever directory and /or drive they are located as shown below. out = filer...

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I have calculated 4 standard deviation values for each row of a 4x3 matrix. How to convert these 4 values into a single standard deviation value for the whole matrix?
a=[2 3 5;12 67 54;3 7 8;14 9 23] b = std(a,0,"all") Use the *all* option to get the SD for whole matrix

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is possible to update parameter function ?
call the function xx inside the Main function using a loop. This would repeatedly call the function xx and update the value of...

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fun is doing odd things
fun is defined as anonymous function with two input parameters. In the 1st approach, you are defining both parameters as argume...

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Normalized Wind Rose Plot help
One way is to use the data for air pollution concentration directly and compare with direction data as shown below Data = load(...

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Comparing two tables and replacing categorical column, row wise.
Hi @Giridhar sai pavan kumar Konduru, Here's one way to compare Label columns from two tables. Do you also want to add the ...

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In app designer the timer call back keeps running after xing out of application.
can you try placing the delete(t) inside the timercallback function ? function startupFcn(app) %Creating timer object ...

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Average every 3 rows of 1 column in a 12 x 8 array
Data = [ 34 6 4 -6.60874766440390 -40.7725049965035 16217 0.289000000000000 1.02200000000000 35 6 5 -6.54326464638770 -40.5611...

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Dimensionality error with plot
Pdata = reshape(pressureData(1,1,:),1,[]) plot(t,Pdata)

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Incorrect argument data type or missing argument in call to function 'sqrt'.
clc Lc0 = ureal('Lc0',4.2e-3,'percent',10) Lg0 = ureal('Lgo',2.5e-3,'percent',30) Cf0 = ureal('Cf0',8e-6,'percent',10) ...

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Filtering out y values
Here's what you can do to filter y values from a dataset , by applying a condition x = 0:8e4; y = 20*rand(length(x),1); scatt...

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regarding matlab simulink.
Hi @LAXMIDHAR, Delete any files that are previously named untitled in your parent and/or working directory. Close all previ...

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Adding more circles to the scatter plot legend
If you want different colors, call the scatter function seperately for each point. Currently, you are assigning the same color ...

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How to remove zero from float value.?
x = [0.9093 0.9074 0.9014] vpa(round(x,1),2)

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Arrhenius model fitting using fminsearch
Give a suitable values for intial guess as inputs to objective function, and set values for physical constants in correct units...

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Help with solve and symbolic equations
In the first approach, the LHS of both equations are same and when you try to solve only for variable i0 using two equations it ...

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Inverse input/output of switch case function
my_func('word j') function [y] = my_func(x) switch x case 'word i' y = 'name a'; % sprintf('%s'...

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error using horzcat function
theta = [theta(:,1:6),zeros(size(theta,1),1)];

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export structs within structs
Use a for loop to export the struct data to a cell array for J = 1:length(QSMs2.treedata) S{J} = QSMs2.treedata(J); end

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solve thFile: Copy_of_heattransfer.m Line: 18 Column: 13 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for misme error
k_steel = 50; %w/m-k conductivity k_copper = 500; [xs,ts,u_steel,flux_s] = FDM(k_steel); % Temperature distribution in steel r...

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How to check for strings in a cell array using ismember.
ismember(A{i}(j,1), B{i})

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Writing multidimensional array to text file with fprintf
fprintf(fid, '%0.4f \t\n',u10(:,:,i)); fprintf(fid, '%0.4f\t\n',v10(:,:,i)); fprintf(fid, '\n'); Delete the transpose and...

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How to create an empty plotting area, with log X axis?
If you use xlim & ylim it creates an empty plot with axes information having that range specified. Make them empty xlim([0.01,...

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Every time I run this code, I get "Error using plot Vectors must be the same length.
x1Range = 0:h1:2; % yEuler1 & yMidpoint1 vectors x2Range = 0:h2:2; % yEuler2 & yMidpoint2 vectors x3Range = 0:h:2;% yHue...

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How to access column of double in struct array?
x(i,:) = y(i,:) = Date(i,:) = % rename date in output vector to Date as its already used in the struct Use the a...

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a little bug in function "plot/stem"
a = ones(1179080,1); stem(a(1:100000:end))

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Why don't the markers have the correct color in the legend?
A1 = randi(10, [5 5]); B1 = randi(10, [5 5]); A2 = randi(10, [5 5]); B2 = randi(10, [5 5]); h1=scatter(A1,B1,'g'); hold on ...

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updating tiledlayout in a loop - "Invalid or deleted object"
Delete the hold on commands that are present AFTER the scatter commands and place it BEFORE the scatter commands. Then add t...

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Symbolic equation system - Hi! Can someone please tell me why this algortim is not working? I know resultant values for XA and T are 0.2 and 657 but i want it to work.
If you use vpaintegral instead of int and it can be solved using the vpasolve function.. Also, the integral needs to done w.r....

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