Datamatrix barcode size

[IanLea]

Hi

I'm trying to create a datamatrix barcode that meets the following spec:

The Royal Mail 2D barcode is a Complex Mail Data Mark (CMDM) barcode. It has the
specified format of a Data Matrix type ECC200 code complying with the international
standard ISO/IEC 16022, version 2006. It must be produced as a type 12 barcode with
following key characteristics
• Barcode Size: 44 x 44 modules
• Module Size: 0.5mm - 0.7mm
• Physical Size: 22mm x 22mm - 30.8mm x 30.8mm
• Total Capacity (with C40 encoding): 213 characters

and it's working fine except that for a typical 204 character input string, it is generating a 52x52 or 48x48 barcode and not 44x44.

I'm way out of my depth here but suspect that the C40 encoding might be the problem.
Does this package support C40 encoding or am I barking up the wrong tree?

Any guidance would be much appreciated.

--
Ian.

[boombuler]

Hi,

you are right there is currently no C40 encoding. Only ASCII...

It would require an replacement for encodeText. If you want to help with this let me know otherwise it might take some time till I have time to implement this...

Regards
Florian

[IanLea]

Thanks Florian. I've written an encodeC40 method which appears to be working, subject to confirmation from Royal Mail. Happy to share that with you however you wish.

--
Ian.

[boombuler]

Would be happy if you would contribute it to the project because it may help other people.