Re: [U2] matrix dimension
One of the things I've asked for in the past has been alternate language runtimes, for example embedding JavaScript (e.g. Google V8 engine) into U2. Then you *could* have unlimited nesting .. Brian -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Martin Phillips Sent: 24 May 2012 13:05 To: U2 Users List Subject: Re: [U2] matrix dimension Hi, Multiple dimensions in DIM implies that all elements in each dimension would exist, around 25000 in your example. Using dynamic arrays, even as part of a dimensioned array is much more flexible as unused elements may not need to exist. And UV allows seven dimensional dynamic arrays - more than enough for most users!! Of course, indexing into a dimensioned array would be faster. Your request is close to something we were asked for in QM, arrays of arrays. Although technically easy we have not done it as the user requesting it withdrew the request. The hardest part is how to fit it into the language syntax. Martin Phillips ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] matrix dimension
Hi, Multiple dimensions in DIM implies that all elements in each dimension would exist, around 25000 in your example. Using dynamic arrays, even as part of a dimensioned array is much more flexible as unused elements may not need to exist. And UV allows seven dimensional dynamic arrays - more than enough for most users!! Of course, indexing into a dimensioned array would be faster. Your request is close to something we were asked for in QM, arrays of arrays. Although technically easy we have not done it as the user requesting it withdrew the request. The hardest part is how to fit it into the language syntax. Martin Phillips On 24 May 2012, at 12:46, Charles Stevenson wrote: > So LARGE.ARRAY is 2-dimensional & SMALL.ARRAY is 1 dimensional. > > The real value of INMAT is telling the SIZE of (each) dimension. > > Yes, I'm deliberately being picky. I've found it very frustrating to be > hard-limited to 1- or 2-dimnsional arrays. > What would be so wrong to allow: > > DIM BETTER.ARRAY( 23, 14, 10, 2, 3 ) > > Seems like it would be an easy enough feature to add, completely backward > compatible. > > Why isn't dimension arbitrary? > > > > On 5/23/2012 3:01 PM, Wally Terhune wrote: >> Extracted from the UniBasic Commands Reference for INMAT() >> >> In the next example, the program segment dimensions two arrays and then >> prints the >> dimensions using the PRINT statement and INMAT function: >> DIM LARGE.ARRAY(23,14) >> DIM SMALL.ARRAY(9) >> PRINT INMAT(LARGE.ARRAY) >> PRINT INMAT(SMALL.ARRAY) >> This results in the following: >> 23}14 >> 9 >> -Original Message- >> From: Jeffrey Butera >> ... is there a function to determine it's dimensions?... > .. > ___ > U2-Users mailing list > U2-Users@listserver.u2ug.org > http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] matrix dimension
So LARGE.ARRAY is 2-dimensional & SMALL.ARRAY is 1 dimensional. The real value of INMAT is telling the SIZE of (each) dimension. Yes, I'm deliberately being picky. I've found it very frustrating to be hard-limited to 1- or 2-dimnsional arrays. What would be so wrong to allow: DIM BETTER.ARRAY( 23, 14, 10, 2, 3 ) Seems like it would be an easy enough feature to add, completely backward compatible. Why isn't dimension arbitrary? On 5/23/2012 3:01 PM, Wally Terhune wrote: Extracted from the UniBasic Commands Reference for INMAT() In the next example, the program segment dimensions two arrays and then prints the dimensions using the PRINT statement and INMAT function: DIM LARGE.ARRAY(23,14) DIM SMALL.ARRAY(9) PRINT INMAT(LARGE.ARRAY) PRINT INMAT(SMALL.ARRAY) This results in the following: 23}14 9 -Original Message- From: Jeffrey Butera ... is there a function to determine it's dimensions?... .. ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] matrix dimension
Hi Jeffrey, Take a look at the INMAT() function. Martin Phillips Ladybridge Systems Ltd 17b Coldstream Lane, Hardingstone, Northampton NN4 6DB, England +44 (0)1604-709200 -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jeffrey Butera Sent: 23 May 2012 20:59 To: U2 Users List Subject: [U2] matrix dimension I don't work with MATrices much in Unidata. If I have my hands on a matrix setup from another program is there a function to determine it's dimensions? My reading of DIM doesn't indicate it can do this and I don't see anything in the various MAT... commands that looks promising. -- Jeffrey Butera Manager of ERP Systems Hampshire College 413-559-5556 ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] matrix dimension
Extracted from the UniBasic Commands Reference for INMAT() In the next example, the program segment dimensions two arrays and then prints the dimensions using the PRINT statement and INMAT function: DIM LARGE.ARRAY(23,14) DIM SMALL.ARRAY(9) PRINT INMAT(LARGE.ARRAY) PRINT INMAT(SMALL.ARRAY) This results in the following: 23}14 9 Wally Terhune Technical Support Architect Rocket Software 4600 South Ulster Street, Suite 1100 **Denver, CO 80237 **USA t: +1 720 475 8055 **e: wterh...@rocketsoftware.com **w: rocketsoftware.com/u2 -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jeffrey Butera Sent: Wednesday, May 23, 2012 1:59 PM To: U2 Users List Subject: [U2] matrix dimension I don't work with MATrices much in Unidata. If I have my hands on a matrix setup from another program is there a function to determine it's dimensions? My reading of DIM doesn't indicate it can do this and I don't see anything in the various MAT... commands that looks promising. -- Jeffrey Butera Manager of ERP Systems Hampshire College 413-559-5556 ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
