How can I fix "error Using plot" "Data cannot have more than two dimensions"?

Question

Daniel Lopez 2020-10-15

0
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https://ww2.mathworks.cn/matlabcentral/answers/614423-how-can-i-fix-error-using-plot-data-cannot-have-more-than-two-dimensions

评论： KSSV 2020-10-15

I have a user defined function which i refer to as TruncatedVol, which i refer to in my script:

function  vol= TruncatedVol(R1, R2,H); 
%Converts to vector inputs to meshgrid in order to allow element by element mutliplication
[r1,r2,H1] = meshgrid(R1,R2,H);
%Finds the height if the cone were not truncated and sets that value as T 
% h is the distance from the center of the smaller radius to the the tip of the cone if the cone were not truncated
h = (H1.*r2)./(r1-r2);
T = H1 + h;
%Outputs the volume of the frustrum
vol = (pi/3)*[(T.*r1.^2) - (h.*r2.^2)];
end
Script 2 : Titled Project 1 
%Houskeeping
clc
clear all
 
%test 1 
%R1 = 5, R2 = 4, H= 10
Test1 = TruncatedVol(5, 4,10);
 
%test 2: One input has vector
%R1 = 5:.25:7, H = 10, R2 = 4
Test2 = TruncatedVol(5:.25:7, 4,10);
 
%test 3: Two inputs are vectors
%R1 = 5:.25:7, H = 7:.25:10, R2 = 4
Test3 = TruncatedVol(5:.25:7,4,7:.25:10);
 
%define values for plot for Large Radius is constant, height constant, and smaller radius
%changes
rp =(1:.1:4);
v1= TruncatedVol(4,rp,10);
 
% define values for plot for R and r are constant, h changes
Hp = (1:.1:10);
v2= TruncatedVol(5,4,1:.1:10);
 
%Makes the plots onto Figures
figure 
%Plot 1: R1 is changing 
subplot(2,1,1)
plot(rp,v1,'-g')
xlabel('Radius of Smaller End(in)')
ylabel('Volume (in^3)')
subplot(2,1,2)
plot(Hp,v2,'-b')
xlabel('Height of frustrum(in)')
ylabel('Volume (in^3)')

In my second script file, I refrence this function, and can get volumes for various vectors when they're R1 and R2. Problems are with H, which Test 3 gives me a 1x9x13 , and gives me the error

"Error using plot

Data cannot have more than 2 dimensions.

Error in Project1 (line 34)

plot(Hp,v2,'-b')"

I want to make a plot of v2 as as Hp changes, but that error appears, how do i fix this?