# How to make a ramp function that start in point a and finish in point b. [a,b]. And with value 0 outside the interval

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Juan Muñoz 2019 年 10 月 7 日

I want to build a ramp function that start from point a
and finish in point b. [a,b]
I have constructed a code of a ramp functon that starts from 0 and finish in point b.[0,b].
this is the code:
hold on
b =2 % time in wich the ramp finish
a=1 %time in which the ramp start
t = [0:0.01:15]'; %timespan of the ramp function
for impAmp = [3 5 10] . %height of the ramp
function
rampOn = @(t) t<=b;
ramp =@(t) t.*impAmp.*rampOn(t);
plot(t,ramp(t))
end
But I want to define a new code of the ramp function defined in the interval [a,b]. And a value of 0 outside the interval.
I have tried this code. But it modified all the ramp function.
hold on
b =2 % time in wich the ramp finish
a=1 %time in which the ramp start
t = [0:0.01:15]';%timespan of the ramp function
for impAmp = [3 5 10]%height of the ramp function
rampOn = @(t) a<t<=b;
ramp =@(t) t.*impAmp.*rampOn(t);
plot(t,ramp(t))
end

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### 回答 (1 件)

Siriniharika Katukam 2019 年 10 月 10 日
Hi
A small modification in the code you defined for the interval [a,b].
Using this line would yield you the expected result.
rampOn = @(t) t>=a & t<=b;

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