loading 3D big array

1 次查看（过去 30 天）
Ersilia Leonardis
Hi everyone, does anyone know how to extract a 2D slice from a 3D binary files of size [2048]x[2048]x[1024]? I just need slices in the x-y plane for a fixed value of the third dimension, z. Thanks a lot!

请先登录，再回答此问题。

回答（4 个）

Pinpress
Pinpress 2012-5-4
im(:,:,100)??
or squeeze(im(:, 1000, :)) ??
Ersilia Leonardis
Thanks for your reply but I haven't got my 3D image as variable in my workspace since the 3D array would be too big (file size is 16 GB!). I just wanna read off a slice from the external binary file.
Jan
Jan 2012-5-8
The method to extract a slice from a binary file depends on the file format. It matters if you are talking about binary STL files or a simple double array stored in linear order without any header.
Ersilia Leonardis
The file format is gda. The data stored are just raw binary and have fortran ordering with no header. The corresponding array has size X=2048 x Y=2048 x Z=1024 and each quantity is a 4 byte real.

类别

在 Help Center 和 File Exchange 中查找有关 Data Import and Analysis 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by