document CSV files about sift3d HOT 4 OPEN

Dear Blaine,
I think you did a great job!
When using CLI for image registration, there are several output formats. The most important output format should be matches.csv, right? Because other images just use the information in this file to draw key points.

So, For this matches.csv, The meanings of these six columns are:
a column: x coordinate of the source image
b column: y coordinate of the source image
d column: y coordinate of the reference image
e column: y coordinate of the reference image
So, what do the data in columns c and f mean?

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Hi, thanks for your interest. Columns c and f and the z-coordinates. I should really document this.

from sift3d.

Hi, thanks for your interest. Columns c and f and the z-coordinates. I should really document this.
Hi, Thank you for your advice.
For the z-coordinate you mentioned, it refers to the ordinal number of the picture, right?
In other words, if a row of data in matches.csv is 96 201 6 96 201 5, it means that (96, 201) in the sixth picture of the 1.nii and (96, 201) in the fifth picture of the 2.nii are matched.
However, there are three directions of Axial, Coronal, and Sagittal in the nii file. How can I know which direction the z coordinate refers to?

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The Nifti file format actually encodes a 3D (or sometimes more than 3D) image. Please see here:
https://nifti.nimh.nih.gov/nifti-1/

If no special registration is encoded in the Nifti file, then the xy-plane is the same as the axial plane in your viewer.

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