How to use loops for specific numbers

Question

Jose De La Pena 2019-12-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/494687-how-to-use-loops-for-specific-numbers

编辑： Jose De La Pena 2019-12-6

So, I have a projectile for which I have created a User-Defined function for, however, the question asks to use the user defined functions for a set number of velocities and angles. The user defined function accepts two inputs (velocity,angle). The question asks to use these following velocities and angles:

velocity= [30,40,47.16];
angle=[5,7.5,10,30,45,60];

So, the question asks to create a loop to create a graph. I'm having trouble creating the actual loop, here is what I have thus far,

%Ball Trajectory Graph
%Define the for loop first
velocity= [30,40,47.16];
angle=[5,7.5,10,30,45,60];
for ii=1:length(velocity)
    velocity=velocity(ii);
    for iii=1:length(angle)
        angle=angle(iii);
DeLaPena_Trajectory(velocity,angle)
    end   
end 

Here's what I know: The total amount of loops to be completed is 3, in which it calculates for each velocity the angles specified once. The main problem I am having is actually getting the loop to insert said velocites and angles. Any hints would greatly be appreciated.

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Answer 1

Walter Roberson 2019-12-3

1
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https://ww2.mathworks.cn/matlabcentral/answers/494687-how-to-use-loops-for-specific-numbers#answer_404594

在 MATLAB Online 中打开

%Ball Trajectory Graph
%Define the for loop first
velocity= [30,40,47.16];
angle=[5,7.5,10,30,45,60];
for ii=1:length(velocity)
    this_velocity=velocity(ii);
    for iii=1:length(angle)
        this_angle=angle(iii);
        output(ii,iii) = DeLaPena_Trajectory(this_velocity,this_angle);
    end   
end 

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Jose De La Pena 2019-12-6

编辑：Jose De La Pena 2019-12-6

The code runs, but it only stores the x value not the y value of the anonymous function. I have no clue as to where the y-value goes. Also, how does MatLab know to default to only the x-value and not the y-value? Since the output(ii,iii) is assigning it to one specific index, it can only store one value.

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