I'm trying to compare two matrices made up of bits.
doing a simple comparison of
matA == matB
yields this sort of output.
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] FALSE TRUE FALSE TRUE TRUE FALSE
[2,] TRUE TRUE TRUE TRUE TRUE TRUE
[3,] FALSE TRUE FALSE FALSE FALSE TRUE
[4,] FALSE TRUE TRUE FALSE FALSE FALSE
[5,] TRUE TRUE TRUE TRUE FALSE FALSE
[6,] TRUE TRUE TRUE TRUE FALSE FALSE
I really would like just one comprehensive value to say TRUE or FALSE.
This is the hack (rather ugly I think) I put together that works,
but there has to be a nicer way, no?
res=pop[1:ROWS,] == keep[1:ROWS,]
if ((ROWS*COL) == sum(res))
{
cat('they are equal\n')
}else
cat('they are NOT equal\n')
Thanks!
Esmail
Have a look at all.equal
matA <- matrix(1:4, ncol = 2)
matB <- matA
all.equal(matA, matB)
matB[1,1] <- -10
all.equal(matA, matB)
HTH,
Thierry
------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
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tel. + 32 54/436 185
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ensure that a reasonable answer can be extracted from a given body of
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-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Esmail
Verzonden: zondag 26 april 2009 19:03
Aan: R mailing list
Onderwerp: [R] comparing matrices
I'm trying to compare two matrices made up of bits.
doing a simple comparison of
matA == matB
yields this sort of output.
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] FALSE TRUE FALSE TRUE TRUE FALSE
[2,] TRUE TRUE TRUE TRUE TRUE TRUE
[3,] FALSE TRUE FALSE FALSE FALSE TRUE
[4,] FALSE TRUE TRUE FALSE FALSE FALSE
[5,] TRUE TRUE TRUE TRUE FALSE FALSE
[6,] TRUE TRUE TRUE TRUE FALSE FALSE
I really would like just one comprehensive value to say TRUE or FALSE.
This is the hack (rather ugly I think) I put together that works,
but there has to be a nicer way, no?
res=pop[1:ROWS,] == keep[1:ROWS,]
if ((ROWS*COL) == sum(res))
{
cat('they are equal\n')
}else
cat('they are NOT equal\n')
Thanks!
Esmail
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I'm not sure I'm following you but have you tried, identical(matrix(c(1,1,1,1),ncol=2), matrix(c(1,1,1,1),ncol=2)) ?all.equal ?isTRUE ?identical and possibly the compare package, compare(matrix(c(1,1,1,1),ncol=2),matrix(c(1,1,1,1),ncol=2)) HTH, baptiste On 26 Apr 2009, at 18:02, Esmail wrote:> I'm trying to compare two matrices made up of bits. > > doing a simple comparison of > > matA == matB > > yields this sort of output. > > [,1] [,2] [,3] [,4] [,5] [,6] > [1,] FALSE TRUE FALSE TRUE TRUE FALSE > [2,] TRUE TRUE TRUE TRUE TRUE TRUE > [3,] FALSE TRUE FALSE FALSE FALSE TRUE > [4,] FALSE TRUE TRUE FALSE FALSE FALSE > [5,] TRUE TRUE TRUE TRUE FALSE FALSE > [6,] TRUE TRUE TRUE TRUE FALSE FALSE > > I really would like just one comprehensive value to say TRUE or FALSE. > > This is the hack (rather ugly I think) I put together that works, > but there has to be a nicer way, no? > > res=pop[1:ROWS,] == keep[1:ROWS,] > > if ((ROWS*COL) == sum(res)) > { > cat('they are equal\n') > }else > cat('they are NOT equal\n') > > Thanks! > > Esmail > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code._____________________________ Baptiste Augui? School of Physics University of Exeter Stocker Road, Exeter, Devon, EX4 4QL, UK Phone: +44 1392 264187 http://newton.ex.ac.uk/research/emag
On Apr 26, 2009, at 1:02 PM, Esmail wrote:> I'm trying to compare two matrices made up of bits. > > doing a simple comparison of > > matA == matB> identical( matrix((1:4), ncol=2), matrix((1:4), nrow=2)) [1] TRUE > identical( matrix((1:4), ncol=2), matrix((2:5), nrow=2)) [1] FALSE> > > yields this sort of output. > > [,1] [,2] [,3] [,4] [,5] [,6] > [1,] FALSE TRUE FALSE TRUE TRUE FALSE > [2,] TRUE TRUE TRUE TRUE TRUE TRUE > [3,] FALSE TRUE FALSE FALSE FALSE TRUE > [4,] FALSE TRUE TRUE FALSE FALSE FALSE > [5,] TRUE TRUE TRUE TRUE FALSE FALSE > [6,] TRUE TRUE TRUE TRUE FALSE FALSE > > I really would like just one comprehensive value to say TRUE or FALSE. > > This is the hack (rather ugly I think) I put together that works, > but there has to be a nicer way, no? > > res=pop[1:ROWS,] == keep[1:ROWS,] > > > if ((ROWS*COL) == sum(res)) > { > cat('they are equal\n') > }else > cat('they are NOT equal\n')That code is meaningless to us without a definition (in R) of ROWS, COL, keep, and pop> > > Thanks! > > Esmail > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.David Winsemius, MD Heritage Laboratories West Hartford, CT