ANSI-C program: t_interp_pt.c
NAME
t_interp_pt - Estimate temporal deformation history at
specific times given a non-uniformly sampled deformaton
history(float data)
SYNOPSIS
t_interp_pt <plist> <pmask> <pSLC_par>
<itab> <tlist> <pdata_in> <pdata_out>
[dtmax] [np_max]
| <plist> | (input) point list (int) |
| <pmask> | (input) point data stack of mask values (uchar, set to - to accept all points) |
| <pSLC_par> | (input) stack of SLC/MLI parameters (binary) |
| <itab> | (input) table associating interferogram stack records
with pairs of SLC stack records (ascii) (line entries are: pSLC_rec1 pSLC_rec2 pINT_rec switch_flag) |
|
<tlist> |
(input) text
format single column list of dates to estimate in the
format YYYYMMDD |
| <pdata_in> | (input) point data stack (float) |
| <pdata_out> | (output) temporally filterd point data stack (float) |
| [dtmax] | maximum time interval considered (t-dtmax, t+dtmax) (days) (-1: all records, default= 140.000) |
| [np_max] | maximum number of temporal neighbor records considered within the temporal window (-1 all records, default: -1) |
EXAMPLE
t_interp_pt plist pmsk3 pSLC_par itab tlist pdispl
pdispl_tlist 180 5
Interpolates displacement values in the pdispl file to evaluate the displacement at specific times listed tlist.
INSTALLATION
Source code t_interp_pt.c in ./IPTA/src, executable version
t_interp_pt in ./IPTA/bin
DESCRIPTION
Conducts a temporal interpolation of the point data stack pdispl. Each layer of pdispl is associated with an entry in the itab file cooresponding to a specific time. The output stack pdispl_tlist is generated using times listed in the tlist file. The pdispl values are used to estimate the displacement at the specific times listed in the tlist. These interpolated values are written to the pdispl_tlist file, one layer for each entry in the tlist. The user can specify the maximum temporal window used for interpolation using the dtmax command line parameter. The maximum number of neighboring layers can also be specified using the np_max parameter. The interpolation algorithm is derived from the filtering in the program. tpf_pt.c. The tlist consists of a single column list of dates in the format YYYYMMDD (20041005). Lines of the tlist with a # in the first column are ignored. The output stack pdispl_tlist has the same number of layers as there are tlist entries.
OPTIONS
none.
© Copyrights for Documentation, Users Guide and Reference Manual by Gamma Remote Sensing, 2005.
UW, CW, TS, last change 26-Jan-2005.