r - R_Extracting coordinates from SpatialPolygonsDataFrame -

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is me have problem extracting coordinates of polygon spatialpolygonsdataframe object? able extract other slots of object (id,plotorder) not coordinates (coords). don't know doing wrong. please find below r session bdrydata being spatialpolygonsdataframe object 2 polygons.

> bdrydata object of class "spatialpolygonsdataframe" slot "data":   id gridcode 0  1        0 1  2        0  slot "polygons": [[1]] object of class "polygons" slot "polygons": [[1]] object of class "polygon" slot "labpt": [1] 415499.1 432781.7  slot "area": [1] 0.6846572  slot "hole": [1] false  slot "ringdir": [1] 1  slot "coords":          [,1]     [,2] [1,] 415499.6 432781.2 [2,] 415498.4 432781.5 [3,] 415499.3 432782.4 [4,] 415499.6 432781.2    slot "plotorder": [1] 1  slot "labpt": [1] 415499.1 432781.7  slot "id": [1] "0"  slot "area": [1] 0.6846572   [[2]] object of class "polygons" slot "polygons": [[1]] object of class "polygon" slot "labpt": [1] 415587.3 432779.4  slot "area": [1] 20712.98  slot "hole": [1] false  slot "ringdir": [1] 1  slot "coords":            [,1]     [,2]   [1,] 415499.6 432781.2   [2,] 415505.0 432781.8   [3,] 415506.5 432792.6   [4,] 415508.9 432792.8   [5,] 415515.0 432791.5   [6,] 415517.7 432795.6   [7,] 415528.6 432797.7   [8,] 415538.8 432804.2   [9,] 415543.2 432805.8  [10,] 415545.1 432803.6  [11,] 415547.1 432804.7  [12,] 415551.7 432805.8  [13,] 415557.5 432812.3  [14,] 415564.2 432817.1  [15,] 415568.5 432823.9  [16,] 415571.0 432826.8  [17,] 415573.2 432828.7  [18,] 415574.1 432829.7  [19,] 415576.2 432830.7  [20,] 415580.2 432833.8  [21,] 415589.6 432836.0  [22,] 415593.1 432841.0  [23,] 415592.2 432843.7  [24,] 415590.6 432846.6  [25,] 415589.0 432853.3  [26,] 415584.8 432855.3  [27,] 415579.7 432859.8  [28,] 415577.7 432866.2  [29,] 415575.6 432868.1  [30,] 415566.7 432880.7  [31,] 415562.7 432887.5  [32,] 415559.2 432889.1  [33,] 415561.5 432890.7  [34,] 415586.2 432889.7  [35,] 415587.1 432888.6  [36,] 415588.5 432890.2  [37,] 415598.2 432888.7  [38,] 415599.1 432887.7  [39,] 415601.2 432886.7  [40,] 415603.1 432885.7  [41,] 415605.2 432884.7  [42,] 415606.1 432882.7  [43,] 415607.2 432880.7  [44,] 415608.3 432878.3  [45,] 415612.2 432874.8  [46,] 415614.7 432871.9  [47,] 415617.1 432870.7  [48,] 415622.4 432868.2  [49,] 415622.0 432862.4  [50,] 415624.2 432855.4  [51,] 415633.2 432845.3  [52,] 415639.0 432841.1  [53,] 415642.8 432832.9  [54,] 415647.5 432828.7  [55,] 415654.3 432820.3  [56,] 415654.1 432816.5  [57,] 415658.2 432812.8  [58,] 415661.9 432808.6  [59,] 415663.5 432808.7  [60,] 415668.1 432803.5  [61,] 415676.5 432801.3  [62,] 415679.1 432802.7  [63,] 415680.1 432802.7  [64,] 415681.1 432802.7  [65,] 415682.2 432802.7  [66,] 415685.8 432804.7  [67,] 415691.8 432802.2  [68,] 415693.6 432798.9  [69,] 415696.2 432777.0  [70,] 415689.8 432773.5  [71,] 415683.7 432771.6  [72,] 415680.2 432766.7  [73,] 415679.0 432765.6  [74,] 415676.8 432753.7  [75,] 415671.4 432747.7  [76,] 415662.7 432747.2  [77,] 415658.7 432750.0  [78,] 415657.0 432746.3  [79,] 415654.1 432743.7  [80,] 415652.3 432739.8  [81,] 415649.6 432739.6  [82,] 415648.0 432739.7  [83,] 415641.9 432736.4  [84,] 415633.4 432736.9  [85,] 415630.2 432734.7  [86,] 415622.3 432733.6  [87,] 415614.4 432726.5  [88,] 415617.1 432719.1  [89,] 415612.5 432718.1  [90,] 415610.0 432720.9  [91,] 415606.2 432716.6  [92,] 415603.2 432713.9  [93,] 415601.4 432710.0  [94,] 415580.3 432708.7  [95,] 415545.1 432709.7  [96,] 415543.5 432711.5  [97,] 415534.0 432715.7  [98,] 415527.1 432713.7  [99,] 415521.1 432711.6 [100,] 415505.6 432710.6 [101,] 415501.3 432710.9 [102,] 415499.3 432708.7 [103,] 415495.6 432711.6 [104,] 415482.6 432726.2 [105,] 415477.2 432734.0 [106,] 415478.1 432737.7 [107,] 415479.2 432739.7 [108,] 415480.9 432743.4 [109,] 415486.5 432751.2 [110,] 415493.2 432760.7 [111,] 415494.1 432762.7 [112,] 415498.1 432767.9 [113,] 415497.2 432770.7 [114,] 415490.6 432773.2 [115,] 415493.2 432775.6 [116,] 415496.0 432778.7 [117,] 415499.2 432779.7 [118,] 415499.6 432781.2    slot "plotorder": [1] 1  slot "labpt": [1] 415587.3 432779.4  slot "id": [1] "1"  slot "area": [1] 20712.98    slot "plotorder": [1] 2 1  slot "bbox":        min      max x 415477.2 415696.2 y 432708.7 432890.7  slot "proj4string": crs arguments:  +proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +datum=osgb36 +units=m +no_defs +ellps=airy +towgs84=446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894

subsetting second polygon bdrydata

> bdrydata@polygons[[2]] object of class "polygons" slot "polygons": [[1]] object of class "polygon" slot "labpt": [1] 415587.3 432779.4  slot "area": [1] 20712.98  slot "hole": [1] false  slot "ringdir": [1] 1  slot "coords":            [,1]     [,2]   [1,] 415499.6 432781.2   [2,] 415505.0 432781.8   [3,] 415506.5 432792.6   [4,] 415508.9 432792.8   [5,] 415515.0 432791.5   [6,] 415517.7 432795.6   [7,] 415528.6 432797.7   [8,] 415538.8 432804.2   [9,] 415543.2 432805.8  [10,] 415545.1 432803.6  [11,] 415547.1 432804.7  [12,] 415551.7 432805.8  [13,] 415557.5 432812.3  [14,] 415564.2 432817.1  [15,] 415568.5 432823.9  [16,] 415571.0 432826.8  [17,] 415573.2 432828.7  [18,] 415574.1 432829.7  [19,] 415576.2 432830.7  [20,] 415580.2 432833.8  [21,] 415589.6 432836.0  [22,] 415593.1 432841.0  [23,] 415592.2 432843.7  [24,] 415590.6 432846.6  [25,] 415589.0 432853.3  [26,] 415584.8 432855.3  [27,] 415579.7 432859.8  [28,] 415577.7 432866.2  [29,] 415575.6 432868.1  [30,] 415566.7 432880.7  [31,] 415562.7 432887.5  [32,] 415559.2 432889.1  [33,] 415561.5 432890.7  [34,] 415586.2 432889.7  [35,] 415587.1 432888.6  [36,] 415588.5 432890.2  [37,] 415598.2 432888.7  [38,] 415599.1 432887.7  [39,] 415601.2 432886.7  [40,] 415603.1 432885.7  [41,] 415605.2 432884.7  [42,] 415606.1 432882.7  [43,] 415607.2 432880.7  [44,] 415608.3 432878.3  [45,] 415612.2 432874.8  [46,] 415614.7 432871.9  [47,] 415617.1 432870.7  [48,] 415622.4 432868.2  [49,] 415622.0 432862.4  [50,] 415624.2 432855.4  [51,] 415633.2 432845.3  [52,] 415639.0 432841.1  [53,] 415642.8 432832.9  [54,] 415647.5 432828.7  [55,] 415654.3 432820.3  [56,] 415654.1 432816.5  [57,] 415658.2 432812.8  [58,] 415661.9 432808.6  [59,] 415663.5 432808.7  [60,] 415668.1 432803.5  [61,] 415676.5 432801.3  [62,] 415679.1 432802.7  [63,] 415680.1 432802.7  [64,] 415681.1 432802.7  [65,] 415682.2 432802.7  [66,] 415685.8 432804.7  [67,] 415691.8 432802.2  [68,] 415693.6 432798.9  [69,] 415696.2 432777.0  [70,] 415689.8 432773.5  [71,] 415683.7 432771.6  [72,] 415680.2 432766.7  [73,] 415679.0 432765.6  [74,] 415676.8 432753.7  [75,] 415671.4 432747.7  [76,] 415662.7 432747.2  [77,] 415658.7 432750.0  [78,] 415657.0 432746.3  [79,] 415654.1 432743.7  [80,] 415652.3 432739.8  [81,] 415649.6 432739.6  [82,] 415648.0 432739.7  [83,] 415641.9 432736.4  [84,] 415633.4 432736.9  [85,] 415630.2 432734.7  [86,] 415622.3 432733.6  [87,] 415614.4 432726.5  [88,] 415617.1 432719.1  [89,] 415612.5 432718.1  [90,] 415610.0 432720.9  [91,] 415606.2 432716.6  [92,] 415603.2 432713.9  [93,] 415601.4 432710.0  [94,] 415580.3 432708.7  [95,] 415545.1 432709.7  [96,] 415543.5 432711.5  [97,] 415534.0 432715.7  [98,] 415527.1 432713.7  [99,] 415521.1 432711.6 [100,] 415505.6 432710.6 [101,] 415501.3 432710.9 [102,] 415499.3 432708.7 [103,] 415495.6 432711.6 [104,] 415482.6 432726.2 [105,] 415477.2 432734.0 [106,] 415478.1 432737.7 [107,] 415479.2 432739.7 [108,] 415480.9 432743.4 [109,] 415486.5 432751.2 [110,] 415493.2 432760.7 [111,] 415494.1 432762.7 [112,] 415498.1 432767.9 [113,] 415497.2 432770.7 [114,] 415490.6 432773.2 [115,] 415493.2 432775.6 [116,] 415496.0 432778.7 [117,] 415499.2 432779.7 [118,] 415499.6 432781.2    slot "plotorder": [1] 1  slot "labpt": [1] 415587.3 432779.4  slot "id": [1] "1"  slot "area": [1] 20712.98

extracting slots

> bdrydata@polygons[[2]]@id  [1] "1"  > bdrydata@polygons[[2]]@plotorder [1] 1

but problem coordinates

> bdrydata@polygons[[2]]@coords error: no slot of name "coords" object of class "polygons"

any appreciated. thanks.

finally, figured out didn't parse output correctly. correct way bdrydata@polygons[[2]]@polygons[[1]]@coords. mind difference in command polygons(polygons , polygons) , took me ages find out.


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