comp.lang.idl-pvwave archive: archive » count number of pixels and write to a txt file

Home » Public Forums » archive » count number of pixels and write to a txt file

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

count number of pixels and write to a txt file [message #90144]

Sun, 01 February 2015 22:38

beardown912
Messages: 2
Registered: February 2015

Junior Member

Hello,

I've been banged my head and pulling out my hairs for last a couple of days, but I am still struggling. And I decided to get some help from you guys.

What I've been trying to is counting number of pixels meets a condition and write it into a text file with the file name. And I am dealing with about 20,000 image files.
I used 'where' function and it works fine in displaying while looping.
However, only the last value of pixel number and all file names are appended.
Below is what I've been reached. It looks very sloppy :)

------------------------------
pro filelist

filter = ['*.tif']
file = file_search(dialog_pickfile(PATH='C:\', filter=filter, get_path=outdir, /multiple_files), count=numbers)
FILE_MKDIR, outdir

FOR j=0, numbers-1 DO BEGIN

Image = read_tiff(file[j])

index = where(image ge 210, ct)

if ct GT 50000 then begin
openw, lun, outdir + 'test00.txt ', /get_lun
printf, lun, ct, file
close, lun
free_lun, lun
endif

ENDFOR
end
------------------------------------------------

Any tip would be greatly appreciated.

Thanks,
Kim

Report message to a moderator

[Message index]

		count number of pixels and write to a txt file By: beardown912 on Sun, 01 February 2015 22:38
		Re: count number of pixels and write to a txt file By: Moritz Fischer on Sun, 01 February 2015 23:43
		Re: count number of pixels and write to a txt file By: Yngvar Larsen on Mon, 02 February 2015 04:31
		Re: count number of pixels and write to a txt file By: beardown912 on Mon, 02 February 2015 05:18

Previous Topic:	make_rt change viewplane behaviour
Next Topic:	Re: Correlate and NAN

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 11:47:52 PDT 2025

Total time taken to generate the page: 0.00199 seconds