if statement for a matrix

Hi my x-axis is a 1x72 matrix having values from 1 to 72.

y axis values are again 1x72 matrix having data values.

I want the "if loop" to go on for only those x values which are between 10 and 25, and plot x vs y for only those selected values (y axis data values corresponding to the values between 10 to 25). Could you please evaluate my code.

for i = 1:length(x)

if (x>10) && (x<25)

plot(x,y)

end

end

Answer 1

[Star Strider]

Use ‘logical indexing’:

x = 1 : 72;
y = rand(1, 72);
mv = (x>10) & (x<25);

figure
plot(x(mv), y(mv))
grid
xlim([min(x)  max(x)])

Experiment to get the result you want.

Answer 2

[Alex Mcaulley]

You don't need the loop, just using logical indexing:

plot(x(x>10&x<25),y(x>10&x<25))

Answer 3

[Darpan Verma]

Thanks guys.