Answered
Linear fit between two sets of independent variables
If your model if y = x; Then, m = mean(y); J = sum((x-y).^2); S = sum((y-m).^2); r2 = 1 - (J/S); % R^2 value or c...

12 years ago | 0

Answered
Run a loop through multiple matrices
Something like this: for i = 1:5 eval(['A' num2str(i) '(' 'A' num2str(i) '<0.1 | A' num2str(i) '>0.3)' '=' 'NaN']) ...

12 years ago | 0

Answered
Setting the amount of data points before plotting
How about function hydrogenusage P = 0:1:4000; Q= (120*P)-(P.^2); plot(P,Q) xlabel('Power') ylabel('Usage') ...

12 years ago | 0

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Answered
error: In an assignment A(I) = B, the number of elements in B and I must be the same.
The problem is in re(i)=re(i)+N(i)*b*(L/2)*alpha(g); b is (n*1) matrix and L is a (1,n) matrix. If you are doing, what I...

12 years ago | 0

Answered
Delete rows of a matrix
Lets say you matrix is something named A. Tol = 1e-6; count = 1; flag = 1; while (flag == 1) temp1 = A(count+1:...

12 years ago | 0

Question

Small Probabilities appearing less frequent using rand
I am trying to do some Monte Carlo Type simulations. In this, I have few choices which needs to be selected using weighted proba...

12 years ago | 2 answers | 0

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answers

Answered
Problem with if function and decimal numers
The issue is very small difference in floating point numbers, like 1.00000 and 1.0000000001. There is negligible difference howe...

12 years ago | 0

Answered
create periodic tasks set
Lets say you have execution time and period in vector A and B, respectively. Then you might do something like this: for i =...

12 years ago | 0

Answered
Working with Dates,Problem with syntax
Following your code trend: strfind might not work in this case as for example if you are looking for January (01) in a date stri...

12 years ago | 0

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Answered
Confuse with function handles, matrix and single point
In defining f, you didn't do the function right. To take a value of x as a vector, you need to use *./* instead of just */* . I...

12 years ago | 0

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Answered
"Not enough input arguments" plotting a function
First define r like r = 1:10; Then do the plotting using, plot(r,sFn(r))

12 years ago | 0

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Answered
How do i obtain a matrix from a gui table to multiply it to another matrix?
that's because tableData is undefined in pushbutton2_callback. add global tableData; before a = str2num(tableData). this will...

12 years ago | 0

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Answered
"Too many input arguments" error on function within GUI code
Try rhImport(hObject,eventdata) instead of just rhImport.

12 years ago | 0

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Question

Matlab 2013a versus 2012b (Speed Issue)
I have a long simulation which I wrote while using Matlab 2012b. I run it on a more powerful linux system which has 2013a versio...

12 years ago | 0 answers | 0

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Answered
Generating a random binary matrix
A = randi([0 1], n,m)

12 years ago | 13

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Answered
How do I create such matrix ? (please look at the thread for further details)
How about C = A; C(:,2:end) = A(:,2:end)-B(:,1:end-1); This solution is for generalized (n*m) system.

12 years ago | 0

Answered
How to find the global mean(average)of the entire scene of a hyperion hyperspectral data.
If by global mean, you mean the mean value of the reflectance values throughout the whole bands, then you can do something like ...

12 years ago | 0

Answered
sphere made of 2d circles in 3d plot
You can use sphere function to create a sphere. Do you specifically need sphere from circles?

12 years ago | 0

Answered
How to scale the axis while ploting some function which changes its size on every iteration?
Use ylim([min max]) right after plot(x,y). I think you might have put ylim after drawnow, this adjust the y-axis but after plott...

12 years ago | 0

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Answered
How to get a 10 day avergaed data set from a daily data set
Lets say, your dataset is called A. [m,~] = size(A); tmp1 = cumsum(A(:,2:3)); tendayAvg = zeros(m-9,2); tendayAvg(...

12 years ago | 0

Solved

Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

12 years ago

Solved

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

12 years ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

12 years ago

Solved

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

12 years ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

12 years ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

12 years ago

Solved

Add two numbers
Given a and b, return the sum a+b in c.

12 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

12 years ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

12 years ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

12 years ago