Tagged Questions
0
votes
1answer
16 views
Insert matrix element into a Function input in Matlab
I want to make a function that can take a matrix element as an input. Is this possible?
I have in the main script a matrix like:
A = [0 1 2 3 4 5 6 7 8]
I want to make a function that is like:
...
-1
votes
3answers
36 views
MatLab error: Too many input arguments
I have defined a function like this:
function [phi_D,phi_S,v_S] =libem2(n_D,p_D,n_S,vertpts_S,elemvert_S,alpha_S,beta_S,f_S)
Clearly libem2 takes in 8 arguments. This function is actually a helper ...
1
vote
1answer
26 views
Issue Changing Script to function in MatLab
I am trying to give a/set 'rho_real' to this code and receive P_Mpa as an/set of outputs, however the initial 'rho_real' does not seem to get changed as I run the function.
Any Help is greatly ...
2
votes
2answers
39 views
Function returns vector instead of scalar [closed]
I have defined two anonymous functions like this:
hx = @(x) 0.23.*(x>=a).*(x<5) + ...
2.8020.*exp(-x/2).*(x>=5).*(x<=b);
Hx = @(x) p.*c.*x.*(x>=0).*(x<5) + ...
...
0
votes
2answers
40 views
Functions and function name errors
I'm trying to write a simple function, e.g:
function [x y] = functionname (a, b, c, d, e)
so I create an m-file called function-name.m, with all the variables specified. However, the m-file from ...
2
votes
3answers
45 views
Matlab: passing functions as arguments of a function
The function that I want to build is:
function y = myfunction(data, @f1, @f2, @f3, @f4)
%Fit data using f1,f2,f3,f4 such that data ~ af1+bf2+cf3+df4
end
where data is an array. The user will define ...
0
votes
2answers
45 views
I used while loop and my project become not responding (MATLAB)
I'm beginner in MATLAB programming.
I'm working on statistic data and I have some problem with while looping. Here's the codes :
% --- Executes on button press in b_analisa_data.
function ...
0
votes
1answer
18 views
Matlab: Plot a function with different parameters into
In Matlab I have a function calling a set of parameters. I have 3 sets, and I can call them individually and plot them.. No problems there. But I want to be able to compare them in one single plot. ...
1
vote
2answers
33 views
Memory size of function handle - MATLAB
One of the fields in my structure is a function handle:
strct.handl=@(arg1,arg2)handl(arg1,arg2,par1,par2)
Now, arg1 and arg2 are defined every time I use the handle, but par1 and par2 are stored ...
7
votes
3answers
107 views
Why is the Matlab function “feval” needed?
A function handle can be used to call a function, e.g.
f = @sin;
val = f(1.0);
so why is "feval" ever needed?
val = feval(f, 1.0);
When is it useful?
1
vote
3answers
27 views
Matlab Callback Function Only Sees one Parameter Passed to it
I'm writing my first GUI programmatically in Matlab. I have built the visual aspect of the GUI and I am now in the process of writing the Callback functions. When I write the callback function I need ...
1
vote
3answers
54 views
How to evaluate a function at a point in Matlab?
For example, if I have a function f(x)=x^2, how can I evaluate it at x=2?
I have tried employing the symbolic toolbox and using the following code in the Command Window:
syms x;
f = sym(x^2);
...
0
votes
2answers
27 views
Matlab arrayfun mapping using two arrays?
How would I go about mapping the values of TWO arrays to a function and returning the result as an array?
arr = [1, 2, 3];
arr2 = [1, 4, 5];
val= arrayfun(@(x) func(arr, arr2))
function val = ...
0
votes
2answers
41 views
how to find min and max of float number in matlab
The min and max functions in MATLAB work on only integer values. How can I find the min and max of a double vector?
a = [2.1 3.4 5.6 7.6]
min(a)
returns to me:
Subscript indices must either be ...
1
vote
0answers
32 views
Incorporating Structure Fields into a Function as Inputs (in MATLAB)
I'm using MATLAB (Mapping Toolbox) to create a large number of lines between different countries. Since there are so many lines, I'm trying to do this using object-oriented programming. This is the ...
