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x2sys_merge(1gmt) [debian man page]

X2SYS_MERGE(1gmt)					       Generic Mapping Tools						 X2SYS_MERGE(1gmt)

NAME
x2sys_merge - Merge an updated COEs tables SYNOPSIS
x2sys_merge -Amain_COElist.d -Mnew_COElist.d DESCRIPTION
x2sys_merge will read two crossovers data base and output the contents of the main one updated with the COEs in the second one. The second file should only contain updated COEs relatively to the first one. That is, it MUST NOT contain any new two tracks intersections (This point is NOT checked in the code). This program is useful when, for any good reason like file editing NAV correction or whatever, one had to recompute only the COEs between the edited files and the rest of the database. -A Specify the file main_COElist.d with the main crossover error data base. -M Specify the file new_COElist.d with the newly computed crossover error data base. OPTIONS
No space between the option flag and the associated arguments. EXAMPLES To update the main COE_data.txt with the new COEs estimations saved in the smaller COE_fresh.txt, try x2sys_merge -ACOE_data.txt -MCOE_fresh.txt > COE_updated.txt SEE ALSO
x2sys_binlist(1), x2sys_cross(1), x2sys_datalist(1), x2sys_get(1), x2sys_init(1), x2sys_list(1), x2sys_put(1), x2sys_report(1) GMT 4.5.7 15 Jul 2011 X2SYS_MERGE(1gmt)

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X2SYS_GET(1gmt) 					       Generic Mapping Tools						   X2SYS_GET(1gmt)

NAME
x2sys_get - Get track listing from the x2sys track index databases SYNOPSIS
BD(x2sys_get) -TIT(TAG) [ -C ] [ -D ] [ -E ] [ -FIT(flags) ] [ -L[IT(list)] ] [ -NIT(flags) ] [ -Qe|BD(i) ] [ -Rwest/east/south/north[r] ] [ -V ] ] DESCRIPTION
BD(x2sys_get) will return the names of the track data files in the x2sys data base for this TAG that match the given requirements. You may choose a specific region and optionally ask only for tracks that meet certain data criteria. Finally, you may select an option to list all possible pairs that might generate crossovers. -T Specify the x2sys TAG which tracks the attributes of this data type. OPTIONS
No space between the option flag and the associated arguments. -C Instead of reporting the track names, just output the coordinates of the center of each bin that has at least one track with the specified data. -D Only report the track names [Default adds the availability of data for each field]. -E Append the file extension to all reported tracks [no extension]. -F Give a comma-separated list of column names (as described in the definition file) that should all be present within the selected region. [Default selects all data columns]. A track will be included in the returned list if at least one bin reports that the track has all of the listed columns. -L Crossover mode. Return a list of track pairs that should be checked for possible crossovers. The list is determined from the bin- index data base on the assumption that tracks occupying the same bin are very likely to intersect. By default we return all possi- ble pairs in the data base. Append the name of a file with a list of tracks if you want to limit the output to those pairs that involve at least one of the track names in your list. The output is suitable for the -K option in x2sys_cross. -N Give a comma-separated list of column names (as described in the definition file) that all must be absent. A track will be excluded from the returned list if at least one bin reports that the track some all of the listed columns. -Q Append e for external COEs only, and i for internal COEs only [Default is all COEs]. This applies to the crossover setup only and requires -L. -R west, east, south, and north specify the Region of interest, and you may specify them in decimal degrees or in [+-]dd:mm[:ss.xxx][W|E|S|N] format. Append r if lower left and upper right map coordinates are given instead of w/e/s/n. The two shorthands -Rg and -Rd stand for global domain (0/360 and -180/+180 in longitude respectively, with -90/+90 in latitude). Alterna- tively, specify the name of an existing grid file and the -R settings (and grid spacing, if applicable) are copied from the grid. For Cartesian data just give xmin/xmax/ymin/ymax. This option limits the tracks to those that fall at least partly inside the spec- ified domain. -V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"]. EXAMPLES
To find all the tracks associated with the tag MGD77, restricted to occupy a certain region in the south Pacific, and have at least free air anomalies and bathymetry, try BD(x2sys_get) -V -TMGD77 -R180/240/-60/-30 -Ffaa,depth To find all the tracks associated with the tag MGD77 that have depth but not twt, try BD(x2sys_get) -V -TMGD77 -Fdepth -Ntwt To find all the pairs associated with the tag MGD77 that might intersect each other, but only those pairs which involves tracks in your list new.lis, try BD(x2sys_get) -V -TMGD77 -Lnew.lis > xpairs.lis NOTE
The tracks that are returned all have the requested data (-F) within the specified region (-R). Furthermore, the columns of Y and N for other data types also reflect the content of the track portion within the selected region. SEE ALSO
x2sys_binlist(1), x2sys_cross(1), x2sys_datalist(1), x2sys_init(1), x2sys_list(1), x2sys_put(1), x2sys_report(1), x2sys_solve(1) GMT 4.5.7 15 Jul 2011 X2SYS_GET(1gmt)

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