SPECPR Users’ Manual Page 8-f8.1 F8: Channel-Record Transpose Alias: tran[spose] This routine transposes the array of channel (column) versus spectrum (rows) to spectrum versus channel. For example, if you had 10 spectra of 5 channels each where each spectrum was taken at 1 hour intervals, this routine transposes the matrix so that there are 5 output "spectra" of 10 channels each where each "spectrum" is intensity at 10 different times. Example: given 4 spectra of 3 channels each: Spectrum | Channel number Number | 1 2 3 |--------------------- 1 | 1.23 1.34 1.45 2 | 2.23 2.34 2.45 3 | 3.23 3.34 3.45 4 | 4.23 4.34 4.45 would be transposed to: Spectrum | Channel number Number | 1 2 3 4 |----------------------------- 1 | 1.23 2.23 3.23 4.23 2 | 1.34 2.34 3.34 4.34 3 | 1.45 2.45 3.45 4.45
WARNING: When you first enter the transpose routine, it prints the wavelength set in use. The wavelength set controls the number of channels (and thus the potential number of output spectra), so it must be set to the right value. The first input request is an option to delete channels. If you delete input channels, the output spectrum will have that channel deleted. You delete channels by typing "d" and the channels to be deleted (see plot routines for a more complete description of the delete points routine), and a "c" to continue to the next step. For example, say you had 20 spectra of 100 channels each, taken as a function of time and you wanted to only have a data set that was the intensity of channel 33. You would delete all but channel 33:
d 1t32 34t100 c
(you may include spaces anywhere except within a number). Next, you will be requested to enter each (non-deleted) channel. Input spectra are entered one per line (file letter ID and record number). When all are typed in, type
to begin transpose. The routine will next ask for the beginning output location (type in file letter ID and record number) and then a common title for all the output spectra. The transpose will then begin and the output spectra will be output sequentially beginning at the beginning point in the file that you selected. The number of output spectra is equal to the number of channels in use minus the deleted channels.