Hi all,

I have a csv file containing words with *UNPRINTABLE ASCII* characters
(described in the following table).

Are there any viable method in eliminating these characters?

I realise that *EXTENDED ASCII* characters (i.e , Ą, ˘, Ł, ¤ etc) can be
removed or replaced via *"gsub"* or *"gregexpr"* functions. But am not
certain with the *UNPRINTABLE ASCII* characters.

Your help in resolving this problem would be highly appreciated.

Thanks




Steven




    ASCII control characters (character code 0-31)The first 32 characters in
the ASCII-table are unprintable control codes and are used to control
peripherals such as printers.
   *DEC* *OCT* *HEX* *BIN* *Symbol* *HTML Number* *HTML Name* *Description*
0 000 00 00000000 NUL &#000;   Null char 1 001 01 00000001 SOH &#001;   Start
of Heading 2 002 02 00000010 STX &#002;   Start of Text 3 003 03 00000011
ETX &#003;   End of Text 4 004 04 00000100 EOT &#004;   End of Transmission
5 005 05 00000101 ENQ &#005;   Enquiry 6 006 06 00000110 ACK &#006;
Acknowledgment 7 007 07 00000111 BEL &#007;   Bell 8 010 08 00001000 BS
&#008;   Back Space 9 011 09 00001001 HT &#009;   Horizontal Tab 10 012 0A
00001010 LF &#010;   Line Feed 11 013 0B 00001011 VT &#011;   Vertical Tab
12 014 0C 00001100 FF &#012;   Form Feed 13 015 0D 00001101 CR &#013;
 Carriage
Return 14 016 0E 00001110 SO &#014;   Shift Out / X-On 15 017 0F 00001111 SI
&#015;   Shift In / X-Off 16 020 10 00010000 DLE &#016;   Data Line Escape
17 021 11 00010001 DC1 &#017;   Device Control 1 (oft. XON) 18 022 12
00010010 DC2 &#018;   Device Control 2 19 023 13 00010011 DC3 &#019;   Device
Control 3 (oft. XOFF) 20 024 14 00010100 DC4 &#020;   Device Control 4 21
025 15 00010101 NAK &#021;   Negative Acknowledgement 22 026 16 00010110 SYN
&#022;   Synchronous Idle 23 027 17 00010111 ETB &#023;   End of Transmit
Block 24 030 18 00011000 CAN &#024;   Cancel 25 031 19 00011001 EM &#025;   End
of Medium 26 032 1A 00011010 SUB &#026;   Substitute 27 033 1B 00011011 ESC
&#027;   Escape 28 034 1C 00011100 FS &#028;   File Separator 29 035 1D
00011101 GS &#029;   Group Separator 30 036 1E 00011110 RS &#030;   Record
Separator 31 037 1F 00011111 US &#031;   Unit Separator

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