Re: Reading in Image Files (Hopefully a "re-inventing the wheel" sort of question)

Posted by Gluender on Apr 22, 2008; 5:15pm
URL: http://imagej.273.s1.nabble.com/Reading-in-Image-Files-Hopefully-a-re-inventing-the-wheel-sort-of-question-tp3696471p3696474.html

>There are a couple of types of image files I'm having trouble reading.
>
>1) The comma-deliminated floating-point file:
>
>          Nrows of lines with Ncols of floating-point number separated by
>commas
>
>          Example:
>
>0.359534,0.36763,0.365069,0.377957,0.369861, <etc>
>
>0.385474,0.396379,0.397619,0.399188,0.39291, <etc>
>
>0.398032,0.403897,0.406541,0.411498,0.403815, <etc>
>
><etc>
>
>    When I try to read the file (import as a "text image"), I get an
>image that is Nrows x 1.
>
>    I tried writing a PlugIn that reads in each line, splits the string
>using the split() function and put each number into an array but WOW
>that takes a really long time!  There MUST be a faster way and I've got
>a feeling this has been done before.
>
>2) The comma-deliminated integer file with 4 lines of header
>information:
>
>          Example:
>
>This is the first line of header info
>
>This is the second line of header info
>
>This is the third line of header info
>
>This is the fourth line of header info
>
>23828,23768,24002,23808,23904,23970,<etc>
>
>23861,23569,23673,23714,23988,23671, <etc>
>
><etc>
>
>    This is a similar problem.  I can read in the file, drop the first 4
>lines, and start splitting the lines but it takes TOO LONG.  There must
>be a faster way.
>
>Sincerely,
>Dwight Bartholomew

If you know N then try "Import>Raw..." and please read the IJ-docs.

HTH

herbie