I am trying to define a new typt and I am beating my head against the wall...

What I have working:

TypeTools:-AddType(Element,'record(l,R)');
 
This defines a type which I can then use in type(xpr,Element) to be false or true depending on whether xpr is a record containing (at least) entries l and R or not.

Now I want to define a type ExpandedLine that is a Vector of Element (Element in the sense above). In fact, in the context of my application I am willing to settle for ExpandedLine being a Vector of record.

Tried various approaches (and making sure Vector is in uneval quotes in the AddType statement) like:

TypeTools:-AddType(ExpandedLine,'Vector'(record));

and variations but no luck.

Any help is appreciated.

Mac Dude

I have the following situation:

HB:=Bend(L,a,n);

Bend is a proc, that returns a Record with info based on its parameters. I would like to get access to the name I assign to (i.e. HB) in the proc. Any chance?

Mac Dude

PS: I can of course kludge things by adding an argument to the proc Bend. But I'd like to avoid that.

I am running a Maple procedure in CLI Maple (mainly because it just provides colored random numbers for other work). When the procedure runs I am getting this kind of output scrolling by:

memory used=10732.9MB, alloc=344.0MB, time=895.85
memory used=10809.2MB, alloc=345.6MB, time=904.26
memory used=10885.5MB, alloc=347.3MB, time=912.67
memory used=10961.8MB, alloc=348.9MB, time=921.27
.
.
.

So I am wondering what "memory used" and "memory allocated" mean here. In "Activity Monitor" (this is Mac OS X) I see that the "memory allocated" values correspond rather closely to the "real memory" usage. No idea what the "memory used" column is. Note that this is a 32 bit process running on a PPS Mac, and it merrily "uses" unlimited amounts of memory that don't exist on the machine and that a 32 bit process should not be able to use (I think Mac OS X limits 32 bit processes to 4 GB). It is clearly not paging as the machine stays perfectly useable.

So, what am I to make of these numbers?

Mac Dude.

Statistics:-Histogram by default choses the vertical axis such that the area under the histogram is 1 (or something like that). In my work, I invariably need to add "frequencyscale=absolute" to get the scale I need. Is there any way to make this the default? Typing this every time gets so old... I have been looking to something analogous to plots:-setoptions but that doesn't seem to exist for Statistics.

M.D.

I have a Matrix of data points I am plotting using plots:-listdensityplot. That works fine.

However, the axes are labeled by row and column number of the Matrix (e.g. 1..20 or whatever). In reality, these are of course some parameters the range of which has been mapped onto the rows and columns of the Matrix.

How can I display the axes using the values of the original parameters? I know the transformation from Matrix row or column to the actual parameters (and in this case it is linear).

TIA,

Mac Dude