it seems you need a grayscale image first. Assuming you are starting
> I'm a new imagej user and am having a problem. I know that imagej will
> generate the data that I want, because I [somehow] got it to do it once. But
> I don't remember the sequence of operations that I went through to get that
> result. I have spent 2 weeks, working several hours each day and have not
> been able to study and find the answer or try everything that seems
> reasonable. My pride and ego is at ZERO! I can't do this w/o help.
>
>
>
> Background:
>
>
>
> I'm using a Nikon D810 camera which produces large files. I need a .csv or
> .txt file w/ the brightness values. I don't want a Histogram, but the data
> behind the Histogram.
>
>
>
> I have been able to produce files w/ all the pixel data [X, Y, R, G, B] in
> one row. That is too large to load into Excel [36,200,000 is too many rows].
> Yes, I have successfully attempted to break it up into several smaller
> files, but that takes hours to do one file! Then I have to extract the
> summary data from each of these 2-dozen+ files and create a global summary
> file.
>
>
>
> As I said, I was able to [somehow] create a .txt file that was organized
> differently. I had all the Y's in the rows and all the X's in the columns.
> The data in each cell was the gray value [I think]. This had only 4913 rows
> x 7359 columns and loaded into Excel [slowly]; it's still big, but
> manageable.
>
>
>
> Sorry for the long intro, getting to my question: How do I recreate another
> of those Measurements.txt files, w/ only gray brightness data in cells and
> in a 2D array?
>
>
>
> TIA!
>
>
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