How to display a plot going to infinity?

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Natasha Simone
Natasha Simone 2018-2-21
评论： Zeynab Mousavikhamene 2019-9-2
I am meant to plot the Dirac Delta function:
my attempt:
x = -30:1:30;
y = zeros(1,numel(x)); %sets all values initially to zero
y(x==0)= inf; % the point corresponding to x=0 is set to inf
plot(x,y,'d')
axis([-40 40 0 inf])
How can I get it to visually show it going up to infinity?
  2 个评论
Muhammad
Muhammad 2019-1-25
编辑：Muhammad 2019-1-25
Use the tick property in Matlab plot as described below

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回答（1 个）

KSSV
KSSV 2018-2-21
编辑：KSSV 2018-2-21
x = -30:1:30;
y = zeros(1,numel(x)); %sets all values initially to zero
y(x==0)= inf; % the point corresponding to x=0 is set to inf
plot(x,y,'d')
text(-41.,0.65,'~','Fontsize',20)
text(-41.,0.67,'~','Fontsize',20)
text(39,0.65,'~','Fontsize',20)
text(39,0.67,'~','Fontsize',20)
axis([-40 40 0 inf])
Adjust the text positions.....
  2 个评论
Natasha Simone
Natasha Simone 2018-2-21
Sorry I wasn't clear, I am looking to visually display the value of x=0 going to infinity like in this figure:
Walter Roberson
Walter Roberson 2019-1-25
There are a couple of File Exchange contributions for creating plots with broken axes.

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