Selecting lines having same values for first two columns
Hello to all.
This is first post. Kindly excuse me if I do not adhere to any rules and regulations of this forum.
I have a file containing some rows with three columns each per row(separeted by a space). There are certain rows for which first two columns have same value but the value in third column is different. In that case I wish to retain only that row which has the maximum value for third column. Further I want to wirte the rows not required to a file for further processing.
I have a question
I have like 19 different list which contains the name of the server but what I need is just unique ones.
First thing I need to do is just make a unique list within the list itself
i.e. delete anything that is repeated inside the list
like for example
in list1
i... (1 Reply)
Hello experts,
I am new to this group and to 'SED' and 'AWK'. I have data (text file) with 5 columns (C_1-5) and 100s of lines (only 10 lines are shown below as an example). I have to find or select only the id numbers (C-1) of specific lines with '90' in the same line (of C_3) AND with '20' in... (6 Replies)
Hi
My pipe delimited .txt file contains rows with 10 columns.
Can anyone advise how I output to file only those rows with the letters ‘ci'
as the first 2 characters in the 3rd column ?
Many thanks (4 Replies)
In a table, date is stored in a column as "2011-01-4".
If I write query to get the dates > "2011-01-06" , then the date "2011-01-4" is also listed. The date stored in the column is a varchar datatype. So how can I make a query to not display the date "2011-01-4" ? Is there any solution ? Thank... (4 Replies)
I have two arrays DIST(1:NCOF) and X(1:NX)
Let NCOF = 5 and NX = 15, with
DIST = and
X =
I want to create an array that puts a zero if DIST is outside the region in X, otherwise putting 1.
In this example I should get
RES =
Using DIST = would give RES =
The values in... (6 Replies)
Hi, all:
I am not familiar with unix,and just started awk scripts. I want to retrieve lines that have the first 4 columns with different values. For example, the input is like this (tab delimited file with one header)
r1 A A A A x
r2 A B B A x
r3 B B B B x
the output should be (header is... (15 Replies)
Hi Guys !
i want to search a record in file by matching two values in a record in two different columns
suppose i have 3 columns
and i want to select all those values from col1 for which in col3 has a specific value
e.g select all "john" from column1 where column 3 has a value of "20"
... (9 Replies)
Hi,
I have a file with the following columns:
361459 447394 CHL1
290282 290282 CHL1
361459 447394 CHL1
361459 447394 CHL1
178352861 178363529 AGA
178352861 178363529 AGA
178363657 178363657 AGA
Essentially, using CHL1 as an example. For any line that has CHL1 in... (2 Replies)
Hello, everyone
I am beginner for shell programming. I want to print all lines that have the same values in first two columns
data:
a b 1 2
a a 3 4
b b 5 6
a b 4 6
what I expected is :
a a 3 4
b b 5 6
but I searched for one hour in... (2 Replies)
Hi, everyone
I have a dataset like this:
A B C D
A C
C D E
F G H
F D K
Y
X A
K K C Gsome of columns have no values in each line. I want to print all lines that have 1/2/3/4 values, export separately to four files. What I expected is like this:
file1
Y
file 2
A C
X Afile 3... (3 Replies)
Discussion started by: nengcheng
3 Replies
LEARN ABOUT OPENDARWIN
funtablerowget
funtablerowget(3) SAORD Documentation funtablerowget(3)NAME
FunTableRowGet - get Funtools rows
SYNOPSIS
#include <funtools.h>
void *FunTableRowGet(Fun fun, void *rows, int maxrow, char *plist,
int *nrow)
DESCRIPTION
The FunTableRowGet() routine retrieves rows from a Funtools binary table or raw event file, and places the values of columns selected by
FunColumnSelect() into an array of user structs. Selected column values are automatically converted to the specified user data type (and
to native data format) as necessary.
The first argument is the Fun handle associated with this row data. The second rows argument is the array of user structs into which the
selected columns will be stored. If NULL is passed, the routine will automatically allocate space for this array. (This includes proper
allocation of pointers within each struct, if the "@" pointer type is used in the selection of columns. Note that if you pass NULL in the
second argument, you should free this space using the standard free() system call when you are finished with the array of rows.) The third
maxrow argument specifies the maximum number of rows to be returned. Thus, if rows is allocated by the user, it should be at least of size
maxrow*sizeof(evstruct).
The fourth plist argument is a param list string. Currently, the keyword/value pair "mask=transparent" is supported in the plist argument.
If this string is passed in the call's plist argument, then all rows are passed back to the user (instead of just rows passing the filter).
This is only useful when FunColumnSelect() also is used to specify "$region" as a column to return for each row. In such a case, rows
found within a region have a returned region value greater than 0 (corresponding to the region id of the region in which they are located),
rows passing the filter but not in a region have region value of -1, and rows not passing any filter have region value of 0. Thus, using
"mask=transparent" and the returned region value, a program can process all rows and decide on an action based on whether a given row
passed the filter or not.
The final argument is a pointer to an int variable that will return the actual number of rows returned. The routine returns a pointer to
the array of stored rows, or NULL if there was an error. (This pointer will be the same as the second argument, if the latter is
non-NULL).
/* get rows -- let routine allocate the row array */
while( (buf = (Ev)FunTableRowGet(fun, NULL, MAXROW, NULL, &got)) ){
/* process all rows */
for(i=0; i<got; i++){
/* point to the i'th row */
ev = buf+i;
/* rearrange some values. etc. */
ev->energy = (ev->pi+ev->pha)/2.0;
ev->pha = -ev->pha;
ev->pi = -ev->pi;
}
/* write out this batch of rows */
FunTableRowPut(fun2, buf, got, 0, NULL);
/* free row data */
if( buf ) free(buf);
}
As shown above, successive calls to FunTableRowGet() will return the next set of rows from the input file until all rows have been read,
i.e., the routine behaves like sequential Unix I/O calls such as fread(). See evmerge example code for a more complete example.
Note that FunTableRowGet() also can be called as FunEventsGet(), for backward compatibility.
SEE ALSO
See funtools(7) for a list of Funtools help pages
version 1.4.2 January 2, 2008 funtablerowget(3)