ANSI-C program: cpd.c
NAME
cp_data - Extraction of user defined image or data segment.
SYNOPSIS
cpd <din>
<dout> <width> <dtype> <xoff> <nx>
<yoff> <ny>
| <din> | (input) input data file |
| <dout> | (output) output data file |
| <width> | number of data values/line in the input data file |
| <dtype> | input data type: 0: FLOAT (4 bytes/value) 1: FCOMPLEX (4 bytes float real, 4 bytes float imaginary) 2: SCOMPLEX (2 bytes int real, 2 bytes int imaginary) |
| <xoff> | offset to starting sample (samples) (enter - for default: 0) |
| <nx> | number of output samples/line (enter - for default: to end of line) |
| <yoff> | offset to starting line (lines) (enter - for default: 0) |
| <ny> | number of output lines (enter - for default: to end of file) |
EXAMPLE
cpd 20141015.rslc
20141015_seg.rslc 47639 2 0 5000 0 -
The command extracts a segment of the data file 20141015.rslc and saves it in the file 20141015_seg.rslc. There are 47639 samples/line and the data type is SCOMPLEX(dtype =2). The starting x pixel has offset 0 and the number of samples/line of the segment is 5000. The segment starts at offset line 0 and continues to the end of the file.
DESCRIPTION
cpd reads the input
data in formats FLOAT, FCOMPLEX or SCOMLEX and then extracts the
user defined image section to the output file. The upper
left corner of the extracted segment that is edefined by offsets
to the starting x sample and y line. The dimensions of the
extract segment are defined by the nx and ny parameters. This is very
useful for examining sections of SLC mosaics from Sentinel-1 that
have more than 32767 samples/line. The display programs in the
gamma software as well as SUN and BMP raster image formats are
limited to a maximum size of 32767 samples and 32767 lines.
The X display protocol cannot display objects that are more the
32767 in width or height.