PRO pixcoord_1d_vec, xsize, xvec

; Description: This module creates a one-dimensional coordinate vector representing the pixel coordinates
;              of a one-dimensional pixel vector of size "xsize" pixels. The coordinate vector "xvec"
;              represents the x pixel coordinates of the pixel vector.
;
; Input Parameters:
;
;   xsize - INTEGER/LONG - The size of the one-dimensional pixel vector (pix). If this value is zero or
;                          negative, then it will be reset to the default value of "1".
;
; Output Parameters:
;
;   xvec - DOUBLE VECTOR - A one-dimensional vector of size "xsize" with values representing the x pixel
;                          coordinates of the one-dimensional pixel vector.
;
; Author: Dan Bramich (dmb@ing.iac.es)
;
; History:
;
;   24/07/2008 - Module created (dmb)

;Check that "xsize" is a number of the correct type, and reset its value if it is out of range

;Generate the coordinate vector for the one-dimensional pixel vector