Linspace is changing my function values
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Hello,
Maybe I do not understand fully what linspace does but when I change my from:
t = linspace(0,250)
to
t = linspace(0,1000)
my output values change. One of my functions (with the most noticeable trend) is:
Pe_po = eta*R_po*m_po*1000*.5.^(t/HL_po);
which is a plot of the electrical power decay in thermoelectric generator using a Polonium-210 radioisotope source. The output increases about 4 fold while the other graphs seem to remain the same but that may be due to their longer half-life.
What I am trying to do is increase the x-axis plotting but this is what I get instead:
t = linspace(0,250)
t = linspace(0,1000)
I am using the Student Version and have some limited Matlab experience (probably less than I should).
Am I using linspace worng or do I need an entirely differen function to graph with?
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采纳的回答
Star Strider
2019-4-28
The linspace function by default produces a vector of 100 elements, so it increments the elements proportionately.
The element intervals are:
ElInt = (maxv - minv)/(len-1)
where ‘maxv’ is the maximum value desired, ‘minv’ is the minimum (starting) value, and ‘len’ is the number of elements, in:
v = linspace(minv, maxv, len);
If you want the same element spacing in your longer vector, this works:
t = linspace(0,1000, 397);
Experiment to get the result you want.
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