It's an unfortunate and annoying limitation of Format. I've needed to do
5-vectors recently and was initially baffled by the cryptic error message
until I reread the help and saw it only does up to 3-vector.
Only solution was to decompose the vector and build the string by hand.
Probably worth duplicating a macro like the one I have that accepts a
4-vector and via 4 Computes and 4 Outputs returns the 4 components. Then
you can pipe them all to Format with template "[%f, %f, %f, %f]" (suit your
%f to taste, say %6.4f).
At 02:04 PM 07/01/04 +0100, you wrote:
I have a field in which the positions component is a 4-vector, ie each
data component
has associated with it four numbers in the positions component. I want to
selected a single
component from the positions component and format it for output.
So far I have extracted the positions component from the field and used
select to choose the item I want to output to screen, but the format
module does not like the 4-vector. Any ideas?
Thanks
John Vaul
Chris Pelkie
Scientific Visualization Producer
618 Rhodes Hall, Cornell Theory Center
607-254-8794
