More questions and a documentation bug

Thanks for the help Yann!

Ok, I found the source of my lunar problems: On the web, the @@ characters
aren't displayed. I was reading the tutorial from the framed version of the
documentation. I just checked, and the @@ characters are even missing inside
the HTML source code. This may be a strange Phoenix bug. (I'm using 0.4.
Excellent browser. See http://mozilla.org/projects/phoenix/)

I'd be willing to give the HTML docs a CSS makeover if the Lush crew are
interested. See keir.mierle.com for a bit of my CSS work if you're curious.

Now, I've been trying to get the matrix stuff to work properly, with mixed
results. The documentation mentions a 'scalar' function to aid in creating
idx0's, but it's location eludes me. I rgrepped through the lsh, packages, and
sys directories and didn't see anything. Although I didn't look quite as hard,
I didn't see the constant function either.

And finally, is there a 'slice' function hidden away somewhere that can give me
slicing similar to, say, Python's or Matlab's matrix manipulation? I am aware
of select, but it only gets half-way there, not being nearly as expressive.  Am
I missing something? 

For instance, say i wanted to take a matrix, and rotate around all the rows,
having the last one wrap to the first. With slicing, this is easy: (Numeric
Python code example)

rotated_cols = concat(m[1:],  m[:1])

where m[1:] all the rows excluding the first, and m[:1] is the first row.
(See http://www.pfdubois.com/numpy/html2/numpy-6.html#marker-59620 for more details)

With select, I would have to loop on a range from 1->n, accumulating the
'slices' into another matrix, then copy the first row to the last row of the
accumulation matrix. So, is there a better way?

Thanks, Keir

--
Keir Mierle
[email protected]
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