Would it be possible to provide your output in a form that we can read it?
I suggest dput().

Cheers,
Roman



On Mon, Oct 15, 2012 at 2:20 PM, zbynek.janoska@centrum.cz <
zbynek.janoska@centrum.cz> wrote:

> Hello,
> I have following problem with gOverlaps function:
> I have two lines, A and B.
> line A has 57 vertexes, all identical with vertexes of line B
> yet, gOverlaps(A,B) gives FALSE
>
> the code follows...
>
> > CooA # coordinates of line A
>            [,1]     [,2]
>  [1,] -506157.4 -1122381
>  [2,] -506046.4 -1122297
>  [3,] -506021.4 -1122279
>  [4,] -505984.9 -1122253
>  [5,] -505953.7 -1122230
>  [6,] -505910.2 -1122200
>  [7,] -505883.4 -1122182
>  [8,] -505840.1 -1122152
>  [9,] -505800.2 -1122126
> [10,] -505771.7 -1122107
> [11,] -505735.4 -1122084
> [12,] -505701.9 -1122062
> [13,] -505651.2 -1122031
> [14,] -505614.7 -1122009
> [15,] -505545.8 -1121969
> [16,] -505484.8 -1121934
> [17,] -505430.2 -1121904
> [18,] -505328.7 -1121850
> [19,] -505275.9 -1121821
> [20,] -505239.0 -1121803
> [21,] -505194.5 -1121782
> [22,] -505155.1 -1121763
> [23,] -505111.1 -1121741
> [24,] -505042.7 -1121710
> [25,] -504996.2 -1121690
> [26,] -504932.4 -1121662
> [27,] -504898.4 -1121648
> [28,] -504869.2 -1121636
> [29,] -504825.2 -1121618
> [30,] -504787.7 -1121603
> [31,] -504719.1 -1121577
> [32,] -504695.1 -1121568
> [33,] -504616.5 -1121539
> [34,] -504558.2 -1121519
> [35,] -504523.9 -1121508
> [36,] -504448.2 -1121482
> [37,] -504299.8 -1121434
> [38,] -504220.0 -1121409
> [39,] -504128.7 -1121380
> [40,] -503978.4 -1121333
> [41,] -503909.8 -1121311
> [42,] -503865.9 -1121297
> [43,] -503774.8 -1121267
> [44,] -503671.5 -1121231
> [45,] -503524.9 -1121177
> [46,] -503413.4 -1121133
> [47,] -503314.5 -1121092
> [48,] -503240.0 -1121059
> [49,] -503162.6 -1121023
> [50,] -503113.6 -1120999
> [51,] -503045.5 -1120966
> [52,] -502922.0 -1120903
> [53,] -502782.1 -1120826
> [54,] -502649.1 -1120748
> [55,] -502509.2 -1120661
> [56,] -502390.5 -1120584
> [57,] -502364.9 -1120567
>
> > CooB # coordinates of line B
>            [,1]     [,2]
>  [1,] -506157.4 -1122381
>  [2,] -506046.4 -1122297
>  [3,] -506021.4 -1122279
>  [4,] -505984.9 -1122253
>  [5,] -505953.7 -1122230
>  [6,] -505910.2 -1122200
>  [7,] -505883.4 -1122182
>  [8,] -505840.1 -1122152
>  [9,] -505800.2 -1122126
> [10,] -505771.7 -1122107
> [11,] -505735.4 -1122084
> [12,] -505701.9 -1122062
> [13,] -505651.2 -1122031
> [14,] -505614.7 -1122009
> [15,] -505545.8 -1121969
> [16,] -505484.8 -1121934
> [17,] -505430.2 -1121904
> [18,] -505328.7 -1121850
> [19,] -505275.9 -1121821
> [20,] -505239.0 -1121803
> [21,] -505194.5 -1121782
> [22,] -505155.1 -1121763
> [23,] -505111.1 -1121741
> [24,] -505042.7 -1121710
> [25,] -504996.2 -1121690
> [26,] -504932.4 -1121662
> [27,] -504898.4 -1121648
> [28,] -504869.2 -1121636
> [29,] -504825.2 -1121618
> [30,] -504787.7 -1121603
> [31,] -504719.1 -1121577
> [32,] -504695.1 -1121568
> [33,] -504616.5 -1121539
> [34,] -504558.2 -1121519
> [35,] -504523.9 -1121508
> [36,] -504448.2 -1121482
> [37,] -504299.8 -1121434
> [38,] -504220.0 -1121409
> [39,] -504128.7 -1121380
> [40,] -503978.4 -1121333
> [41,] -503909.8 -1121311
> [42,] -503865.9 -1121297
> [43,] -503774.8 -1121267
> [44,] -503671.5 -1121231
> [45,] -503524.9 -1121177
> [46,] -503413.4 -1121133
> [47,] -503314.5 -1121092
> [48,] -503240.0 -1121059
> [49,] -503162.6 -1121023
> [50,] -503113.6 -1120999
> [51,] -503045.5 -1120966
> [52,] -502922.0 -1120903
> [53,] -502782.1 -1120826
> [54,] -502649.1 -1120748
> [55,] -502509.2 -1120661
> [56,] -502390.5 -1120584
> [57,] -502364.9 -1120567
> [58,] -502271.7 -1120505
> [59,] -502251.2 -1120492
>
> nrow(CooA)*ncol(CooA) # number of values in CooA
> length(which(CooA %in% CooB)) # all values of CooA are also in CooB (and
> ordering is the same)
> A <- SpatialLines(list(Lines(list(Line(CooA)),ID=1)))
> B <- SpatialLines(list(Lines(list(Line(CooB)),ID=2)))
> gOverlaps(A,B) # gives FALSE
>
> I can not see the reason why this returns FALSE (or does it on your
> computer?)
> Even if I specify the coordinate system, returned value is still FALSE.
>
> Any help would be appreciated,
> Thanks
> Zbynek
>
>
>
> --
> View this message in context:
> http://r-sig-geo.2731867.n2.nabble.com/rgeos-gOverlaps-not-working-properly-tp7581278.html
> Sent from the R-sig-geo mailing list archive at Nabble.com.
>
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