Keywords: class-gridding

Next: CLASS tables in details Up: Quick overview Previous: Efficient cube writing Contents

## Efficient transpositions

If you need to perform one of the transpositions above, you have to know that the command `TRANSPOSE` faces the same problem of traversing the files by slices. For a better efficiency, you should give `TRANSPOSE` the right to allocate as much as memory as possible (the larger the available memory, the smaller the number of slices). This can be achieved with the commands:

    LAS> SIC LOGICAL SPACE_GILDAS 4096  ! Megabytes
    LAS> TRANSPOSE myfile.ab myfile.ba 21

The memory allocated by `TRANSPOSE` is also freed when the command terminates.