Dear list-subscriber,
in the process of writing a general code snippet to extract coefficients
in an expression (in the example below: 0.5 and -0.7), I stumbled over
the following peculiar (at least peculiar to me:-) ) sorting behaviour
of the function all.names():
expr1 - expression(x3 = 0.5 *
Rewrite
expr2 - expression(x3 - 0.5 * x1 - 0.7 * x2)
like this:
expression(`-`(x3, `-`(`*`(0.5, x1), `*`(0.7, x2
and it becomes clear.
On 10/27/06, Pfaff, Bernhard Dr. [EMAIL PROTECTED] wrote:
Dear list-subscriber,
in the process of writing a general code snippet to extract
