Find data in specific range

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Ahmad Rizal
Ahmad Rizal il 31 Dic 2011
Dear all,
I'm quite new in using Matlab. I've wrote a script to determine estimation of solar declination, sd by day number, dn. I would like to know how I can find and fprintf on which dn when -0.2<= sd <= 0.2 with script below. Please help me
fout = fopen('Project_2_Matlab.res','w');
% day number, dn
dn = [1:1:365];
% Solar declination, sd
sd = 23.45*sind(360*(dn+284)/365);
for i=1:1:36
fprintf(fout,'%3d %3.3f \n',j, sd(j));

Risposta accettata

Andrei Bobrov
Andrei Bobrov il 31 Dic 2011
out = dn(sd >= -.2 & sd <= .2);
  1 Commento
Ahmad Rizal
Ahmad Rizal il 31 Dic 2011
Thanks Andrei, it worked.

Accedi per commentare.

Più risposte (1)

Jose Jeremias Caballero
Jose Jeremias Caballero il 31 Dic 2011
clear all
dn = 1:365;
sd = 23.45*sind(360*(dn+284)/365);
fout1 = fopen('Project_2_Matlab.res','w');
fprintf(' i dn(i) sd(i)\n');
for i=1:length(sd)
if sd(i)>=-0.2 && sd(i)<=0.2
fprintf(fout1,'%3d %3d %6.3f\n',i,dn(i),sd(i));
type Project_2_Matlab.res
>> Untitled7
i dn(i) sd(i)
81 81 0.000


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