ANSI-C program: npt.c
NAME
npt - determine number of points in a point list
SYNOPSIS
npt <plist> [pmask]
| <plist> | (input) point list (int) |
| [pmask] | (input) point data stack of mask values (uchar, pmask[i]=0 excludes point i) |
EXAMPLE
npt testsite.plist testsite.pmask
Reads the input point list, counts the number of points and the number of valid points (point for which the mask value is non-zero and writes these two numbers to standard output.
INSTALLATION
Source code npt.c in ./IPTA/src, executable version npt in
./IPTA/bin
DESCRIPTION
For an existing point list npt counts the number of points and
the number of valid points (point for which the mask value is
non-zero and writes these two numbers to standard output.
The number of points should correpsond to the point list file size divided by 8 (as integer values are used for the range and azimuth line coordinates of each point).
The number of valid points depends on the flags in the mask file. A 0 in the mask file indicates that a point is not a valid point.
OPTIONS
none.
SEE ALSO
ipta.h.
© Copyrights for Documentation, Users Guide and Reference Manual by Gamma Remote Sensing, 2003.
UW, CW, TS, last change 20-Feb-2003.