Importing delimited data convoluted with commas

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I have a log file that has 155 columns with about 13000 rows. Typically no problem.

Here is the twist. The data is tab delimited, but the numeric values greater than 1000 has a comma in it, e.g. 1312 is written as 1,312. How do I bring this data in and rid the damn commas.
What I have tried thus far:
1. Use only tab delimiters in the tweaks dialog and "treat all columns as numeric. Does not work only gives me the data before the column.

2. Load as a notebook and do a search and replace on comma. Then re-save data and open again Beachballs Igor and I must force quit.

Any other hints.
My approach to such problems is to write a "cleaned up" version of the file and then load the cleaned up version.

See http://www.igorexchange.com/node/856 for an example of writing a cleaned up version. I think you could use it if you changed this:
    if (ch<0x80 && (ch>=0x20 || ch==0x0D))

to this:
    if (ch<0x80 && (ch>=0x20 || ch==0x0D) && ch!=0x2C)  // Accept CR, reject comma


This assumes that your current file uses CR or CRLF terminators. If it uses LF:
    if (ch<0x80 && (ch>=0x20 || ch==0x0A) && ch!=0x2C)  // Accept LF, reject comma


Then load the cleaned up version.

I typically write a function that creates the cleaned up version, loads it using LoadWave, and deletes it using DeleteFile.

May 17, 2011 at 04:06 pm - Permalink
Hi Howard,

Thank you for the fast reply. I tried your solution and it almost works. It seems to strip out the tab delimiters.

How should the test in the if statement be modified to keep the tabs?

Andy

May 18, 2011 at 07:12 am - Permalink
[quote=hegedus]I tried your solution and it almost works. It seems to strip out the tab delimiters.
How should the test in the if statement be modified to keep the tabs?
Andy[/quote]

Oops.

Try this:
    if (ch<0x80 && (ch>=0x20 || ch==0x09 || ch==0x0D) && ch!=0x2C)  // Accept tab and CR, reject comma

May 18, 2011 at 10:39 am - Permalink