Per your description 3.txt will contain columns 1,2 and 3; 4.txt will contain 1,2 and 4. There will not be 1.txt nor 2.txt as you indicated you want n.txt where n is the column in addition to 1 and 2. I hope I interpreted that correctly.
---------- Post updated at 22:42 ---------- Previous update was at 22:39 ----------
If your system will not allow 100 concurrently open FDs, then the code below should work -- not as efficient, and you will need to delete all text files if you need to rerun the programme.
I need to split a file based on certain context inside the file. Is there a unix command that can do this? I have looked into split and csplit but it does not seem like those would work because I need to split this file based on certain text. The file has multiple records and I need to split this... (1 Reply)
I'm trying to figure out how to do this efficiently with as little execution time as possible and I'm pretty sure using sed is the best way. However I'm new to sed and all the reading and examples I've found don't seem to show a similar exercise:
I have a long text file (i'll call it... (3 Replies)
I have a file that logs multiple sessions. What I would like to do is split this file inclusive of the lines that include "starting session" and "shutting down" and ignore the data before and after the beginning of the first session and the end of the last session. The output files can be called... (2 Replies)
To split the files
Hi,
I'm having a xml file with multiple xml header. so i want to split the file into multiple files.
Test.xml
---------
<?xml version="UTF_8">
<emp: ....>
<name>a</name>
<age>10</age>
</emp>
<?xml version="UTF_8">
<emp: ....>
<name>b</name>
<age>10</age>... (11 Replies)
Hi All,
I am new to this forumn as well to the UNIX, I have basic knowledge of UNIX which I studied some years ago, now I have to do some shell scripting to load data into Oracle database using sqlldr utility, whcih I am able to do. I have a requirement where I need to do following operation.
I... (10 Replies)
Hi,
I have a huge file with a single line.
But I want to break that line into lines of with each line having five columns.
My file is like this:
code:
"hi","there","how","are","you?","It","was","great","working","with","you.","hope","to","work","you."
I want it like this:
code:... (1 Reply)
Hi Friends ,
Please guide me with the code to extract multiple files from one file .
The File Looks like ( Suppose a file has 2 tables list ,column length may vary )
H..- > File Header....
H....- >Table 1 Header....
D....- > Table 1 Data....
T....- >Table 1 Trailer....
H..-> Table 2... (1 Reply)
Hi all,
Newbie here. First of all, sorry if I made any mistakes while posting this question in terms of rules. Correct me if I am wrong. :b:
I have a .dat file whose name is in the format of 20170311_abc_xyz.dat. The file consists of records whose first column consists of multiple dates in... (2 Replies)
Hello I have a file of following format
HDR 1234 abc qwerty
abc def ghi jkl
HDR 4567 xyz qwerty
abc def ghi jkl
HDR 890 mno qwerty
abc def ghi jkl
HDR 1234 abc qwerty
abc def ghi jkl
HDR 1234 abc qwerty
abc def ghi jkl
-Need to split this into multiple files based on tag... (8 Replies)
Discussion started by: wincrazy
8 Replies
LEARN ABOUT DEBIAN
x2sys_solve
X2SYS_SOLVE(1gmt) Generic Mapping Tools X2SYS_SOLVE(1gmt)NAME
x2sys_solve - Determine systematic corrections from crossovers
SYNOPSIS
x2sys_solve -Ccolumn -TTAG -Emode [ COE_list.d ] [ -V ] [ -W ] [ -Z ] [ -bi[s|S|d|D[ncol]|c[var1/...]] ]
DESCRIPTION
x2sys_solve will use the supplied crossover information to solve for systematic corrections that can then be applied per track to improve
data quality. Several systematic corrections can be solved for using a least-squares approach. Note: Only one data column can be processed
at the time.
-T Specify the x2sys TAG which tracks the attributes of this data type.
-C Specify which data column you want to process. Needed for proper formatting of the output correction table and must match the same
option used in x2sys_list when preparing the input data.
-E The correction type you wish to model. Choose among the following functions f(p), where p are the m parameters per track that we
will fit simultaneously using a least squares approach:
c will fit f(p) = a (a constant offset); records must contain cruise ID1, ID2, COE.
d will fit f(p) = a + b * d (linear drift; d is distance; records must contain cruise ID1, ID2, d1, d2, COE.
g will fit f(p) = a + b sin(y)^2 (1980-1930 gravity correction); records must contain cruise ID1, ID2, latitude y, COE.
h will fit f(p) = a + b cos(H) + c cos(2H) + d sin(H) + e sin(2H) (magnetic heading correction); records must contain cruise ID1,
ID2, heading H, COE.
s will fit f(p) = a * z (a unit scale correction); records must contain cruise ID1, ID2, z1, z2.
t will fit f(p) = a + b * (t - t0) (linear drift; t0 is the start time of the track); records must contain cruise ID1, ID2, t1-t0,
t2-t0, COE.
OPTIONS
No space between the option flag and the associated arguments.
COE_list.d
Name of file with the required crossover columns as produced by x2sys_list. NOTE: If -bi is used then the first two columns are
expected to hold the integer track IDs; otherwise we expect those columns to hold the text string names of the two tracks.
-V Selects verbose mode, which will send progress reports to stderr [Default runs "silently"].
-W Means that each input records has an extra column with the composite weight for each crossover record. These are used to obtain a
weighted least squares solution [no weights].
-Z For -Ed and -Et, determine the earliest time or shortest distance for each track, then use these values as the local origin for time
duration or distance calculations. The local origin is then included in the correction table [Default uses 0].
-bi Selects binary input. Append s for single precision [Default is d (double)]. Uppercase S or D will force byte-swapping. Option-
ally, append ncol, the number of columns in your binary input file if it exceeds the columns needed by the program. Or append c if
the input file is netCDF. Optionally, append var1/var2/... to specify the variables to be read.
EXAMPLES
To fit a simple bias offset to faa for all tracks under the MGD77 tag, try
x2sys_list COE_data.txt -V -TMGD77 -Cfaa -Fnc > faa_coe.txt
x2sys_solve faa_coe.txt -V -TMGD77 -Cfaa -Ec > coe_table.txt
To fit a faa linear drift with time instead, try
x2sys_list COE_data.txt -V -TMGD77 -Cfaa -FnTc > faa_coe.txt
x2sys_solve faa_coe.txt -V -TMGD77 -Cfaa -Et > coe_table.txt
To estimate heading corrections based on magnetic crossovers associated with the tag MGD77 from the file COE_data.txt, try
x2sys_list COE_data.txt -V -TMGD77 -Cmag -Fnhc > mag_coe.txt
x2sys_solve mag_coe.txt -V -TMGD77 -Cmag -Eh > coe_table.txt
To estimate unit scale corrections based on bathymetry crossovers, try
x2sys_list COE_data.txt -V -TMGD77 -Cdepth -Fnz > depth_coe.txt
x2sys_solve depth_coe.txt -V -TMGD77 -Cdepth -Es > coe_table.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_SOLVE(1gmt)