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Using 'OR' or 'ELSEIF' with a string

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JB
JB 2016-1-3
编辑： Image Analyst 2016-1-3
Hi, I have a basic question. I am reading a file named as Basefilename="Filenameversion1.production_time.improvement_date.time_frame.hdf".
The code is not reading files from a folder containing different versions i.e "Filenameversion2......hdf", "Filenameversion3......hdf".
Code only reads filename mentioned in Basefilename.The remaining filename is same only version name is changed.
How can i do modification so that matlab reads file even if 'version' is changed.
Thanks alot

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回答（2 个）

Image Analyst
Image Analyst 2016-1-3
The answer for this, along with lots of other good stuff, is in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
Star Strider
Star Strider 2016-1-3
I am not certain that I understand what you want to do, but this may be one approach:
ver_nr = 2;
Basefilename=sprintf('Filenameversion%d.production_time.improvement_date.time_frame.hdf', ver_nr)
produces:
Basefilename = Filenameversion2.production_time.improvement_date.time_frame.hdf
Is that what you want to do?
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Star Strider
Star Strider 2016-1-3
I still don’t understand, but if you want to do comparisons with string variables, use strcmpi, strncmpi, or related functions (links to those in and at the end of those pages).
Image Analyst
Image Analyst 2016-1-3
编辑：Image Analyst 2016-1-3
A comparison would have == not =. So I don't know if you're wanting to do
if Basefilename == "Filenameversion1.production_time.improvement_date.time_frame.hdf"
% Some code to do if this is true.
elseif Basefilename == "Filenameversion2.production_time.improvement_date.time_frame.hdf"
% Some code to do if this is true.
end
Or if you're trying to do
if num1 == num2
% Assign Basefilename
Basefilename = "Filenameversion1.production_time.improvement_date.time_frame.hdf"
else
% Assign Basefilename
Basefilename = "Filenameversion2.production_time.improvement_date.time_frame.hdf"
end
Which is it? Or is it neither?

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