Combining 2 command, difficulty to combine plot in a single x and y range.

2019 5 17
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更新时间：2019 5 17
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HI I have diifficulty on combining 2 plot here in a single x and y coordinates. I got erros when i combine these 2 plots.
Basically i want a plot horinzontal from 0 to 2e9 at -12 and 2.1e9 to 11.1e9 with the equation.
x=[0.01e9,2e9];
y=[-12,-12];
hold on
plot(x,y,'-.or')
x=(2.1:0.1:11.1)*1e9;
y=[-6.68+12.1*log10(x/1e9/5.5)];
hold on
plot(x,y,'-.or')

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zahrein yaacob
zahrein yaacob 2019-5-17
Hi Ravi, Sorry for the confusion. Basically i want to combine this plot into a single x and y range. I tried the below equation, but fail to understnad the errror. Can help? Appreciate your feedback.
x=[0.01e9,2e9,(2.1e9:11.1e9)];
y=[-12,-12,-6.68+12.1*log10(x/1e9/5.5)];
hold on
plot(x,y,'-.or')
KSSV
KSSV 2019-5-17
YOu are creating huge array.....whats the necessity for that?

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