MATLAB: Isit possible to plot a graph with a contant variable

plot

I am trying to plot 1/x, where x is a constant. Is this possible?

Best Answer

Of course. Matlab simply needs to know where to "put the dots", it does not really know what the function "looks like".

Be aware however that the plot function requires an x and y vector of same length for it to create a single line. So, x will contain all the x coordinates, and y will be a constant vector of same length. I will let you figure out how to generate these two elements.

Note 1: For constants, you can also use the "line" function instead of "plot"

Note 2: If you pass a vector and a constant to the plot function it will actually generate a separate "plot" (i.e. axis) for each point. This also works for e.g. a vector and a matrix. Just in case you tried that and wondered why you only get little dots everywhere.

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Usually I see that in cases where it must be something because in a loop you're concatenating something onto c. And if c is not defined yet you'll get an error, but it it's something, anything, even null, it's okay. Something like

c = [];
for k = 1 : 5
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If we didn't define c as null then the c= line inside the for loop would throw an exception the very first time.

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oh I myself found the soln :) kinda dumb of me ;)

you simply need the FROM WORKSPACE block. enter a 2-columned matrix in it, 1st column contains time with respect to stop time and 2nd contains const values........

not removing this question in case anybody needs it

Best Answer

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