How do you save variables to vectors and plot them?
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This is my code:
valueOfP = [];
valueOfD = [];
valueOfT = [];
valueOfH = [];
Irrelevant code that functions on its own
end
fprintf(' Altitude is %d Temp = %d Pressure = %d Density = %d \n', h, t, p, d)
end
valueOfP(h) = p;
valueOfD(h) = d;
valueOfT(h) = t;
valueOfH(h) = h;
plot(valueOfP,valueOfH)
plot(valueOfT,valueOfH)
plot(valueOfD,valueOfH)
I keep getting error messages when I try to run the code. How would I go about saving the variables and then plotting pvs h, t vs h, and d vs h?
3 个评论
madhan ravi
2019-3-14
dipidi dapudi doo , totally vague
madhan ravi
2019-3-14
post your code or upload your script file
Macy Walters
2019-3-14
编辑：madhan ravi
2019-3-14
回答（2 个）
KSSV
2019-3-14
x = zeros([],1) ;
y = zeros([],1) ;
for i = 1:10
x(i) = i ;
y(i) = rand ;
end
plot(x,y) ;
2 个评论
Macy Walters
2019-3-14
KSSV
2019-3-14
You should specify the error.....how you expect us to correct it without code and showing us the error.
You define h to have values that are NOT positive integer:
for h=0:.5:105
which means that you cannot use h as an index. The simplest solution is to define a vector of h values, and loop over its indices. For your code you will need to do something like this:
hvec = 0:.5:105; % vector of h values
N = numel(hvec);
Pvec = nan(1,N); % preallocate output
Dvec = nan(1,N); % preallocate output
Tvec = nan(1,N); % preallocate output
for k = 1:N % loop over indices
h = hvec(k);
... your code
Pvec(k) = p;
Dvec(k) = d;
Tvec(k) = t;
end
plot(hvec,Pvec)
figure()
plot(hvec,Dvec)
figure()
plot(hvec,Tvec)
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2019-3-14
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