how to create for loop in matlab?
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi All,
I have thousands of images each date has 7 bands. I need to create for-loop to calculate
MNDWI=(b4-b6)/(b4+b6)
here is example of the images
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b01_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b02_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b03_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b04_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b05_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b06_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000057.h21v05.006.2015136062042.hdf_sur_refl_b07_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b01_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b02_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b03_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b04_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b05_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b06_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000065.h21v05.006.2015136062016.hdf_sur_refl_b07_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b01_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b02_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b03_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b04_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b05_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b06_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000073.h21v05.006.2015136060905.hdf_sur_refl_b07_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b01_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b02_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b03_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b04_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b05_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b06_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000081.h21v05.006.2015136075413.hdf_sur_refl_b07_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b01_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b02_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b03_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b04_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b05_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b06_clip.tif_mosaico_ream.tif'
'MOD09A1.A2000089.h21v05.006.2015136062547.hdf_sur_refl_b07_clip.tif_mosaico_ream.tif'
Thank you in Advance
Reyadh
3 Kommentare
per isakson
am 4 Apr. 2017
Bearbeitet: per isakson
am 4 Apr. 2017
I still don't understand how to find the two numbers to put into this expression
(b4-b6)/(b4+b6)
Antworten (1)
hamed amini
am 4 Apr. 2017
Bearbeitet: per isakson
am 4 Apr. 2017
look into sprintf function
>> variable_numbers1 = [1 2 3 ... 1000];
>> variable_numbers2 = [2001 2002 2003 ... 2001000];
>> for i=1:1000
>> eval(sprintf('image_bank.image%d = imread(''fixed_string%d_fixed_string%d.tiff'');',i,variable_numbers1(i),variable_numbers2(i)));
>> end
2 Kommentare
Jan
am 4 Apr. 2017
Bearbeitet: Jan
am 5 Apr. 2017
Do not create variables dynamically using eval. See https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
Prefer:
image_bank.image = cell(1, 1000);
for i = 1:1000
filename = sprintf('fixed_string%d_fixed_string%d.tiff', ...
i, variable_numbers1(i));
image_bank.image{i} = imread(filename);
end
Siehe auch
Kategorien
Mehr zu Convert Image Type finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!