Ah! I believe the difference between medover and median is a clump(-1) to collapse the dimensions
There does it indeed to be something wrong with clump too, so that is probably the underlying cause pdl> $x = rcols 'tmp.dat' Reading data into ndarrays of type: [ Double ] Read in 4 elements. pdl> p $x [1 2 3 4] pdl> $x *= 100 pdl> p $x [100 200 300 400] pdl> p $x->clump(-1) [0 0 0 0] What could be happening in rcols() that produces an ndarray that behaves like that? Karl > On 7 Jan 2024, at 12:48 pm, Luis Mochan <moc...@icf.unam.mx> wrote: > > I noticed that medover and maxover do work as expected in this case. > > > On Sun, Jan 07, 2024 at 11:26:56AM +1100, Karl Glazebrook via pdl-general > wrote: >> Hi all, >> >> This dinosaur just upgraded from PDL v2.025 to v.2.084 (yes, I know that is >> lame) >> >> I noticed a few things when running one of my complicated codes, I will >> start seperate email threads >> >> First there seems to be a serious rcols bug: >> >> >> e.g. create a file >> >> # tmp.dat >> 1 >> 2 >> 3 >> 4 >> >> >> Loaded PDL v2.084 (supports bad values) >> pdl> $x = rcols 'tmp.dat' >> Reading data into ndarrays of type: [ Double ] >> Read in 4 elements. >> >> pdl> p $x >> [1 2 3 4] >> pdl> $x *= 100 >> >> pdl> p $x >> [100 200 300 400] >> pdl> p median($x) >> 0 >> pdl> p $x >> [100 200 300 400] >> >> >> It seems the median function sees the values BEFORE the inplace >> multiplacation, whereas print does not. This is very bad. min() and max() >> are similar. No idea what is going on here! The behaviour or absent from >> v2.025 >> >> Notes >> - making a $x->copy() removes the effect >> - creating $x using sequence also removes, so it is something to do with >> rcols() and not inplace in general? >> >> I’d be interested to know if others can reproduce this. It definitely needs >> a fix >> >> best >> >> Karl >> >> >> > > >> _______________________________________________ >> pdl-general mailing list >> pdl-general@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/pdl-general > > > -- > > o > W. Luis Mochán, | tel:(52)(777)329-1734 /<(*) > Instituto de Ciencias Físicas, UNAM | fax:(52)(777)317-5388 `>/ /\ > Av. Universidad s/n CP 62210 | (*)/\/ \ > Cuernavaca, Morelos, México | moc...@fis.unam.mx /\_/\__/ > GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16 C2DF 5F0A C52B 791E B9EB
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