Matlab File I/O concatenation - matlab

I have this
fprintf(emailFile, '%s' , fname);
fprintf(emailFile, '%s' , lname);
fprintf(emailFile, '%i' , id);
fprintf(emailFile, '%s\n' , dept);
I need to make it so that the email file shows up fname.lname.id#dept.edu but I don't know what to do for the concatenation.

As Ben Voigt indicated in his comment, your easiest bet to concatenate parts of the email address with the right separator would be to use the fact that fprintf and its cousin sprintf take arguments that control both the formatting and the actual contents of the string.
You can for example create a single string with the complete email address as follows:
completeAddress = sprintf('%s.%s.%i#%s.edu', fname, lname, id, dept);
As you can see, some of the characters control "insert next string argument here", while other characters in the formatting string just get copied to the output string. Note also that if your ID is an integer that could be up to four characters long, and you want to zero-pad for small numbers (0876 instead of 876) you could use e.g. %04i for the formatting.
Writing to an intermediate string (rather than directly to the file) allows you to confirm you have the string you want; you can then write it to the file with a single statement (assuming that emailFile is a valid file ID, of course)
fprintf(emailFile, '%s\n', completeAddress);

Related

Convert comma separated non json string to json

Below is the value of a string in a text column.
select col1 from tt_d_tab;
'A:10000000,B:50000000,C:1000000,D:10000000,E:10000000'
I'm trying to convert it into json of below format.
'{"A": 10000000,"B": 50000000,"C": 1000000,"D": 10000000,"E": 10000000}'
Can someone help on this?
If you know that neither the keys nor values will have : or , characters in them, you can write
select json_object(regexp_split_to_array(col1,'[:,]')) from tt_d_tab;
This splits the string on every colon and comma, then interprets the result as key/value pairs.
If the string manipulation gets any more complicated, SQL may not be the ideal tool for the job, but it's still doable, either by this method or by converting the string into the form you need directly and then casting it to json with ::json.
If your key is a single capital letter as in your example
select concat('{',regexp_replace('A:10000000,B:50000000,C:1000000,D:10000000,E:10000000','([A-Z])','"\1"','g'),'}')::json json_field;
A more general case with any number of letters caps or not
select concat('{',regexp_replace('Ac:10000000,BT:50000000,Cs:1000000,D:10000000,E:10000000','([a-zA-Z]+)','"\1"','g'),'}')::json json_field;

How to identify a character in a string?

I am trying to write a Powershell code to identify a string with a specific character from a filename from multiple files.
An example of a filename
20190902091031_202401192_50760_54206_6401.pdf
$Variable = $Filename.Substring(15,9)
Results:
202401192 (this is what I am after)
However in some instances the filename will be like below
20190902091031_20240119_50760_54206_6401.pdf
$Variable = $Filename.Substring(15,9)
Results:
20240119_ (this is NOT what I am after)
I am trying to find a code to identify the 9th character,
IF the 9th character = "_"
THEN Set
$Variable = $Filename.Substring(15,8)
Results:
20240119
All credit to TheMadTechnician who beat me to the punch with this answer.
To expand on the technique a bit, use the split method or operator to split a string every time a certain character shows up. Your data is separated by the underscore character, so is a perfect example of using this technique. By using either of the following:
$FileName.Split('_')
$FileName -split '_'
You can turn your long string into an array of shorter strings, each containing one of the parts of your original string. Since you want the 2nd one, you use the array descriptor [1] (0 is 1st) and you're done.
Good luck

how to remove # character from national data type in cobol

i am facing issue while converting unicode data into national characters.
When i convert the Unicode data into national using national-of function, some junk character like # is appended after the string.
E.g
Ws-unicode pic X(200)
Ws-national pic N(600)
--let the value in Ws-Unicode is これらの変更は. getting from java end.
move function national-of ( Ws-unicode ,1208 ) to Ws-national.
--after converting value is like これらの変更は #.
i do not want the extra # character added after conversion.
please help me to find out the possible solution, i have tried to replace N'#' with space using inspect clause.
it worked well but failed in some specific scenario like if we have # in input from user end. in that case genuine # also converted to space.
Below is a snippet of code I used to convert EBCDIC to UTF. Before I was capturing string lengths, I was also getting # symbols:
STRING
FUNCTION DISPLAY-OF (
FUNCTION NATIONAL-OF (
WS-EBCDIC-STRING(1:WS-XML-EBCDIC-LENGTH)
WS-EBCDIC-CCSID
)
WS-UTF8-CCSID
)
DELIMITED BY SIZE
INTO WS-UTF8-STRING
WITH POINTER WS-XML-UTF8-LENGTH
END-STRING
SUBTRACT 1 FROM WS-XML-UTF8-LENGTH
What this code does is string the UTF8 representation of the EBCIDIC string into another variable. The WITH POINTER clause will capture the new length of the string + 1 (+ 1 because the pointer is positioned to the next position after the string ended).
Using this method, you should be able to know exactly how long second string is and use that string with the exact length.
That should remove the unwanted #s.
EDIT:
One thing I forgot to mention, in my case, the # signs were actually EBCDIC low values when viewing the actual hex on the mainframe
Use inspect with reverse and stop after first occurence of #

removing commas in postgresql query

I have a query:
SELECT phone,
to_char(appt_date,'MM/DD/YYYY'),
time_text,
staff_email || subject_line as title,
staff_wav,
agency_wav
FROM phone_dialer
that is sent to a csv file
That results in
9105554444,07/01/2011,08:30am,me#myemail.orgGADK082493,staffid0827,Coastal Counseling
or
9105554444,07/01/2011,08:30am,me#myemail.orgGADK082493,staffid0827,Smith, Bob
The "agency_wav" column could have a name of company. I have tried several ways to remove the comma between Smith, Bob and am failing miserably.
Can anyone steer me to a resolution?
Answer to title, since the body of the question is unclear.
Fastest way to remove commas from a string:
SELECT translate('Smith, Bob, foo,,,bar', ',', '');
Related answer addressing translate() / replace():
Looking for phone number containing a minus, like "123-456789"
If your surround your query with the syntax COPY () TO STDOUT WITH CSV; then it will construct the CSV output and automatically quote the field values that contain commas.
If you want to manually do it in the query, try replace(agency_wav,',','').
The preferred way to create CSV is to use COPY command.
If by some reason you don't want or can't use it, you just need make value returned in the column CSV friendly that is enclose value in double quotes and escape existing double quotes by duplicating them in the string. This will preserve correct value (that is all commas) but will not break CSV format.
SELECT phone,
to_char(appt_date,'MM/DD/YYYY'),
time_text,
staff_email || subject_line as title,
staff_wav,
'"' || replace(agency_wav, '"', '""') || '"'
FROM phone_dialer
This will produce the following line
9105554444,07/01/2011,08:30am,me#myemail.orgGADK082493,staffid0827,"Smith, Bob"
Note quoted value which has comma.

Formatting fprintf

I have a bit of Matlab code and I am trying to export some string and create a tab-delimitted text file from it. I think fprintf performs similarly in C (if not please edit my tag). I believe my issue is with my format string. Basically I have 7 strings that I want separated by tabs and then a newline character. please note that "fid" is a full path. I am looping this in a for loop so lines are being appended each pass and the file is built.
ImgData = strcat(ImgData, fid, '\t', imgNumber, '\t', N_std,'\t',S,'\t',N,'\t',SNR,'\t',SNR_dB,'\n');
DataOut = fopen(strcat('Image_F', folderNumber, '_Data.txt'), 'w');
fprintf(DataOut,'%s\t %s\t %s\t %s\t %s\t %s\t %s\n',ImgData);
You may be curious on how this exports. This formats like
fid\tI#\tN_std\tS\tN\tSNR\tSNR_dB\n
in the txt file. As you can tell this isn't tab-delimitted which my major issue. I am having some trouble with the format string. Does anyone know how to reformat it so it prints the tabs and newline?
You're creating a string in ImgData that you then pass as input to fprintf. This reads ImgData into the first %s of the format string, and then adds at least one tab at the end.
What you should do instead is write something like:
`fprintf(DataOut,'%s\t%i\n',imgName,imgNumber)`
which assumes that imgName is a string and imgNumber an integer number. Note that I pass two placeholders (with the %-sign) and two input variables to fprintf.
Use %6.2f print floating point numbers with a total of 6 characters, including 2 after the comma, for SNR, for example.
For easier development, you can drop the first input argument to fprintf, in which case it will print to command line.