Open fails, looks like chinese

JimJoyce wrote

I'm trying to use calc to format some Ordnance Survey data.
It consists of 201 rows of 201 values.
The values are all short ascii numeric, such as 123.4

It seems to think the data is a long string of what looks (to me) like
chinese characters.

I downloaded an up-to-date copy of Calc, with the same result.

Can you share an example file? Please upload it somewhere and share the link
here or upload using Nabble
http://nabble.documentfoundation.org/Users-f1639498.html