csc plotting help

csc plotting help

asked 4 years ago

mzagrabe
23 ●1 ●4

updated 0 years ago

FrédéricC

5426 ●4 ●44 ●121

Hello,

I'm new to SAGE and am having trouble plotting a cosecant (csc) curve.

Here is my input:

plot(csc(x), (x,-3*pi, 3 * pi))

but the output doesn't show the curves approaching the asymptotes as I would expect.

What do folks think about this?

Thanks for the help!

-matt

answered 4 years ago

tmonteil
27483 ●32 ●205 ●519 http://wiki.sagemath.o...

I would say that the plotting is messed with points of very high ordinate. To fix this, you can first give a name to your plot:

sage: p = plot(csc(x), (x,-3*pi, 3 * pi))

And then render it by limiting the ordinate, say, to the interval $[-4,4]$ :

sage: p.show(ymin=-4, ymax=4)

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Comments

Thanks for the tip, Thierry! It looks good now.

mzagrabe ( 4 years ago )

@mzagrabe -- if it solves your question, please accept the answer by clicking the check mark at its top left (below the question's score). This will mark the question as solved in the list of questions.

slelievre ( 4 years ago )

Alternative solution : add the ym{in|ax} arguments to the plot call :

plot(csc(x), (x,-3*pi, 3 * pi), ymin=-4, ymax=4)

HTH,

Emmanuel Charpentier ( 4 years ago )

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