I have a dataset consisting of the two numerical, measured variables D and O, and a third variable that indicates sampling locations (East or West), in total 310 observation.
D and O are linearly correlated, I have used odregress() in R to create total least square regressions. Doing this for both sampling locations seperately leads to fairly similar regression lines.
I would like to statistically test if slope and/or intercept are different for these two locations. If I had used a simple linear regression I would use an ANOVA for this. But as far as I know this doesnt work for total least square approaches, is that correct? I have googled a lot but couldnt find any solution to this. Someone suggested bootstrapping both groups separately, getting 100 different slopes and intercepts and then to t.test these slope and intercept groups, but I feel like there should be an easier way of doing this?
I would appreciate any help!
EDIT: Here is the dataset
structure(list(O = c(0.7324, 0.78124, 0.78556, 0.78704, 0.81002,
0.87443, 0.8924, 0.91224, 0.92517, 0.92573, 0.92924, 0.93397,
0.95854, 0.96477, 0.98186, 0.99257, 0.9931, 0.99488, 0.99901,
1.0071, 1.0119, 1.0275, 1.0453, 1.0467, 1.0526, 1.0622, 1.0644,
1.0694, 1.0781, 1.0785, 1.0808, 1.0847, 1.0855, 1.0871, 1.0871,
1.0872, 1.0935, 1.1028, 1.1067, 1.1106, 1.1207, 1.1251, 1.131,
1.1359, 1.1359, 1.1387, 1.1419, 1.1496, 1.151, 1.1526, 1.1536,
1.1538, 1.1592, 1.1595, 1.1645, 1.1705, 1.1766, 1.1842, 1.1997,
1.2, 1.2011, 1.2077, 1.2085, 1.2175, 1.2183, 1.2287, 1.2301,
1.2362, 1.2449, 1.248, 1.2508, 1.254, 1.2638, 1.2721, 1.2745,
1.2858, 1.3039, 1.306, 1.3082, 1.3151, 1.3162, 1.3195, 1.3365,
1.3392, 1.3413, 1.355, 1.3614, 1.3675, 1.3826, 1.3882, 1.3926,
1.4075, 1.4094, 1.4109, 1.4155, 1.4414, 1.4487, 1.4554, 1.4642,
1.4771, 1.4782, 1.4845, 1.5, 1.5136, 1.6112, 1.6173, 1.6228,
1.6761, 1.7301, 1.7614, 1.8407, 1.893, 2.1033, 2.433, 0.13104,
0.18361, 0.25999, 0.26253, 0.26939, 0.36762, 0.37335, 0.38632,
0.39468, 0.48303, 0.50917, 0.5375, 0.54697, 0.55499, 0.55638,
0.55957, 0.56313, 0.58666, 0.58995, 0.61187, 0.63833, 0.63971,
0.65251, 0.66876, 0.67105, 0.67192, 0.67333, 0.67489, 0.69292,
0.69587, 0.71104, 0.71439, 0.715, 0.72289, 0.72526, 0.75811,
0.75894, 0.76593, 0.76717, 0.77036, 0.7803, 0.78315, 0.78472,
0.78818, 0.78862, 0.79408, 0.79605, 0.79814, 0.80054, 0.81471,
0.81491, 0.8154, 0.81859, 0.82125, 0.8259, 0.8261, 0.83919, 0.8415,
0.84694, 0.85396, 0.86645, 0.86752, 0.86833, 0.87828, 0.88269,
0.88637, 0.8927, 0.90286, 0.90783, 0.91026, 0.91418, 0.91427,
0.91478, 0.9166, 0.91863, 0.91865, 0.92676, 0.9295, 0.9334, 0.93429,
0.93487, 0.93529, 0.94348, 0.95148, 0.952, 0.95354, 0.95403,
0.9548, 0.96222, 0.96533, 0.96921, 0.97023, 0.97109, 0.97247,
0.97251, 0.98598, 0.98738, 0.99089, 0.99475, 0.99679, 0.99814,
1.0051, 1.0061, 1.0074, 1.0097, 1.0189, 1.0231, 1.0305, 1.0379,
1.0452, 1.0467, 1.0469, 1.0473, 1.0474, 1.0476, 1.0521, 1.06,
1.0652, 1.0673, 1.0737, 1.0739, 1.0796, 1.0832, 1.0864, 1.0922,
1.0923, 1.0928, 1.0987, 1.1098, 1.1108, 1.112, 1.119, 1.1319,
1.135, 1.1355, 1.1368, 1.1406, 1.15, 1.1532, 1.1548, 1.1561,
1.1563, 1.161, 1.1628, 1.1657, 1.1695, 1.1726, 1.1762, 1.1847,
1.1851, 1.186, 1.1861, 1.1864, 1.1892, 1.1944, 1.2014, 1.2034,
1.2035, 1.2088, 1.209, 1.2093, 1.21, 1.226, 1.234, 1.2457, 1.258,
1.2597, 1.2601, 1.261, 1.2619, 1.2648, 1.2724, 1.2785, 1.3138,
1.3148, 1.3392, 1.3452, 1.3537, 1.3553, 1.3613, 1.3634, 1.374,
1.3804, 1.39, 1.3964, 1.4017, 1.4033, 1.4124, 1.454, 1.4909,
1.4933, 1.5095, 1.6554, 2.2905, 2.2935), D = c(6.7335, 5.9842,
7.2607, 6.6692, 6.7883, 6.3851, 6.9412, 6.0943, 6.617, 6.3907,
7.8515, 7.5698, 7.0378, 7.4205, 7.499, 6.8394, 7.0227, 7.5943,
7.6416, 6.2831, 8.1137, 6.5366, 8.5699, 7.9497, 6.6017, 6.6698,
7.4538, 8.0064, 7.9721, 8.618, 8.0632, 7.9414, 7.1566, 6.7663,
8.7359, 6.8296, 7.0741, 7.7438, 6.97, 8.4848, 7.6823, 7.8706,
7.2941, 7.6861, 7.8883, 7.2856, 7.7869, 7.6533, 8.2157, 8.0779,
7.4342, 6.9185, 8.6697, 8.1597, 6.869, 7.8173, 8.0279, 7.3248,
8.1733, 8.8169, 8.1503, 8.6909, 8.7486, 6.9067, 8.4934, 7.891,
8.5693, 8.9372, 8.5297, 8.1161, 8.1002, 7.764, 7.4613, 8.3119,
8.1478, 8.0479, 8.0527, 8.6343, 7.8803, 8.032, 7.2934, 7.7577,
10.055, 6.9696, 8.2901, 9.4509, 8.6809, 8.3964, 9.8273, 8.0222,
8.933, 8.6679, 9.4189, 9.7793, 9.468, 9.4953, 8.9932, 9.9725,
9.2968, 9.9642, 9.3904, 8.9943, 8.8995, 9.4839, 9.9091, 9.3051,
9.8542, 8.5494, 8.5515, 8.287, 10.293, 8.591, 7.8362, 11.147,
2.8316, 3.8897, 4.5759, 3.7706, 4.225, 4.8624, 3.444, 4.0051,
4.3401, 2.938, 4.8966, 3.5711, 4.4281, 5.0723, 5.4119, 5.472,
4.9745, 5.52, 5.5544, 6.9943, 4.8439, 5.0446, 4.5001, 5.1235,
6.3628, 4.7419, 5.8969, 5.5802, 5.6402, 5.5854, 4.9522, 4.7576,
4.1654, 5.571, 5.6993, 4.6309, 5.115, 5.5524, 5.6906, 5.7571,
5.6431, 5.1011, 5.0844, 5.6666, 4.5314, 6.456, 5.1582, 5.3766,
4.7862, 5.4651, 5.914, 5.345, 5.494, 6.9188, 5.7707, 4.9756,
5.1671, 6.1472, 5.2446, 6.1542, 5.9616, 5.9502, 5.4772, 6.1042,
5.7241, 5.592, 4.9474, 6.8122, 7.1245, 6.4829, 5.0722, 6.7933,
6.2212, 6.2546, 6.434, 6.9884, 6.4172, 5.7726, 5.5066, 5.8896,
6.9811, 5.0706, 6.2065, 6.6623, 6.0453, 6.6251, 5.7937, 6.889,
6.4776, 6.3118, 6.2194, 4.9703, 6.4035, 7.5873, 6.4064, 7.1442,
6.461, 5.4649, 5.3957, 6.7057, 6.4148, 6.52, 5.878, 6.8155, 7.4694,
6.4654, 6.081, 8.053, 6.5501, 6.6835, 6.8489, 6.2467, 7.4948,
7.1152, 7.1818, 6.4375, 7.3438, 7.2218, 5.4177, 7.0612, 6.8986,
6.9722, 6.5899, 6.876, 6.817, 6.9595, 7.674, 6.3334, 6.9009,
6.236, 7.1216, 6.4549, 6.8034, 6.379, 6.6753, 6.9686, 7.4758,
7.2485, 6.9605, 6.7682, 6.7202, 7.3145, 7.266, 6.1579, 7.5649,
7.1079, 7.0922, 6.886, 6.9401, 6.8369, 6.8474, 7.2315, 6.3774,
5.6486, 7.1576, 7.5174, 7.3115, 7.998, 8.4278, 7.5225, 7.5302,
7.196, 7.5353, 6.5144, 7.8133, 6.4237, 7.8706, 7.9279, 6.9488,
7.5694, 7.078, 6.9277, 8.1135, 7.7531, 6.6827, 6.9672, 7.6023,
8.957, 7.3327, 7.6301, 8.0807, 6.824, 9.4569, 8.8401, 7.1244,
8.6603, 7.8307, 7.8158, 6.5451, 8.2186, 8.4406, 8.3064, 6.3104,
7.3834, 7.3139), Location = structure(c(1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label =
c("East",
"West"), class = "factor")), class = "data.frame", row.names = c(NA,
-309L))
everybody! I have the following data:
> dput(test)
structure(list(CNTRYID = structure(c(1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("Czech Republic",
"Denmark", "France", "Greece", "Hungary", "Italy", "Lithuania",
"Netherlands", "Poland", "Slovak Republic", "Slovenia", "Spain",
"United Kingdom"), class = "factor"), Gender = structure(c(2L,
2L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L,
2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
1L, 1L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 1L, 1L, 2L, 1L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 1L,
2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 1L, 1L, 2L, 2L, 1L,
2L, 2L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 2L, 2L, 2L,
2L, 2L, 1L, 1L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L,
2L, 2L, 1L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 1L,
1L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 1L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
1L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 1L,
2L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 2L, 1L, 1L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 1L, 2L,
2L, 1L, 1L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 1L, 2L, 1L,
2L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 1L, 1L, 1L, 2L, 1L, 2L, 2L, 2L,
2L, 2L, 1L, 2L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 2L, 2L, 2L,
1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 1L,
1L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 2L, 1L, 1L, 2L, 2L, 2L,
2L, 2L, 2L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 2L,
2L, 1L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 2L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 1L, 2L, 1L, 1L, 1L, 1L, 2L, 1L,
1L, 2L, 1L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 2L, 2L,
2L, 2L, 1L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 1L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 1L, 1L, 1L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 2L,
2L, 1L, 1L, 1L, 2L, 2L, 2L, 1L, 1L, 2L, 1L, 2L, 1L, 1L, 2L, 1L,
2L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 2L, 1L, 1L, 1L,
1L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L,
1L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L,
2L, 2L, 1L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 2L,
1L, 1L, 1L, 2L, 1L, 1L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 2L, 1L, 2L,
2L, 1L, 2L), .Label = c("Male", "Female"), class = "factor"),
PVLIT1 = c(341.73556, 327.75647, 333.99133, 299.23201, 274.26806,
330.20199, 290.3974, 245.60594, 305.04734, 322.12211, 264.19379,
283.34121, 286.62649, 301.27084, 204.67276, 339.7475, 350.74884,
300.41595, 338.76949, 340.92763, 323.86579, 320.03587, 276.43592,
307.12426, 290.60296, 322.23858, 299.0517, 328.35244, 267.82705,
245.1432, 322.43248, 352.37208, 275.75408, 317.75532, 332.75897,
321.23265, 315.338, 303.61999, 309.63271, 315.13702, 349.31912,
330.28415, 291.53027, 238.86247, 336.98836, 312.80759, 312.32254,
238.765, 268.14566, 326.59843, 298.99782, 372.8563, 314.59135,
267.68085, 358.00259, 293.74775, 257.99369, 352.46286, 277.74005,
340.21297, 343.90215, 365.2711, 298.95923, 347.24665, 288.41685,
267.28314, 299.62821, 288.50113, 346.33, 348.62584, 304.37408,
288.28595, 209.42411, 308.3979, 317.11152, 339.05234, 338.79844,
273.4862, 317.05362, 321.9683, 298.49502, 315.31917, 285.24075,
260.5942, 292.17127, 278.49578, 351.55043, 291.29336, 345.61643,
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267.31821, 235.36262, 268.87887, 293.34609, 323.89632, 332.1124,
270.03193, 302.92495, 290.86264, 330.11303, 225.08377, 306.51173,
393.41635, 296.14069, 290.8399, 249.71853, 273.45073, 391.61765,
229.62298, 368.49384, 352.84141, 276.27584, 271.89748, 345.33152,
279.98931, 322.87181, 262.99515, 251.44921, 291.01078, 302.7094,
288.9321, 335.60061, 353.84158, 225.1918, 267.17191, 261.80763,
291.8125, 354.75112, 263.19101, 300.22572, 309.91597, 323.37047,
371.69579, 288.89204, 344.10129, 211.20385, 268.50285, 347.76109,
223.8669, 280.59382, 341.03251, 330.07897, 297.91223, 382.22934,
346.63016, 279.97218, 296.75031, 279.52446, 239.17915, 307.47267,
310.66321, 339.9095, 288.07157, 313.38334, 294.49606, 301.16477,
330.97285, 306.29201, 258.9723, 305.16945, 220.56537, 293.92923,
316.1579, 294.9318, 231.12861, 327.08462, 295.45707, 212.56843,
343.58854, 321.65331, 347.51206, 327.05139, 270.26912, 245.49499,
284.13733, 346.38385, 262.40319, 305.82358, 268.60343, 314.58164,
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262.73407, 261.99723, 265.99006, 297.02533, 221.36089, 342.78459,
259.3387, 308.40893, 345.39162, 252.01223, 249.46163, 232.65253,
295.11341, 269.32542, 270.33917, 311.52152, 295.45142, 299.57599,
264.36488, 253.78787, 277.27982, 184.86342, 343.89483, 304.73262,
315.47804, 277.46603, 294.02264, 278.49927, 288.03195, 261.12088,
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300.40607, 287.81728, 293.79174, 257.01624, 375.42354, 212.49236,
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266.98718, 287.35748, 295.33917, 310.84685, 235.88418, 335.12738,
338.0637, 263.95686, 341.24316, 344.17478, 277.19368, 292.86124,
306.71616, 302.24125, 292.9568, 327.03543, 273.10249, 246.17394,
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340.46333, 260.72247, 177.1923, 298.05925, 229.80109, 299.93516,
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339.58894, 230.45043, 297.69392, 250.64399, 216.37015, 248.48309,
315.3377, 259.91751, 343.96253, 238.19071, 268.7662, 195.30995,
295.58828, 282.90717, 257.23455, 312.86206, 255.33727, 293.08026,
321.61584, 352.64202, 331.90932, 291.72882, 301.87908, 299.83755,
276.29271, 288.31371, 173.19914, 235.98186, 267.68055, 273.57641,
259.38568, 282.82247, 255.2055, 259.92553, 324.37237, 323.27084,
297.1294, 293.29913, 319.26816, 296.19763, 287.20711, 120.7633,
299.14635, 324.02645, 272.24852, 280.46404, 363.56726, 213.18303,
318.84395, 307.23832, 337.49138, 352.61447, 295.99838, 245.2863,
303.07131, 200.14136, 314.2698, 290.86413, 289.6412, 232.13515,
328.96702, 250.57396, 251.36983, 259.23267, 277.98361, 306.61626,
298.90864, 336.54659, 270.34128, 295.23666, 289.28454, 314.25576,
305.90498, 223.59499, 297.3472, 302.97199, 306.82586, 293.8622,
277.52691, 274.99887, 309.28188, 243.9094, 287.04775, 332.49858,
316.85995, 227.84818, 338.34644, 231.03199, 280.42949, 326.23743,
287.90662, 308.44719, 224.65553, 255.51269, 320.01916, 284.76909,
310.07218, 305.64163, 267.90448, 291.91266, 311.95645, 234.77883,
288.47911, 337.66548, 235.67435, 328.26341, 217.05384, 271.18711,
256.92855, 306.35037, 298.57583, 220.25599, 305.70531, 397.23308,
243.34537, 318.81272, 287.84564, 291.19244, 260.50231, 309.29317,
288.32053, 285.65509, 270.71887, 349.55511, 266.04791, 305.22095,
259.29735, 283.99375, 281.30021, 368.59316, 300.66732, 253.21196,
277.61171, 313.79851, 310.08222, 288.8469, 329.40954, 324.01478,
283.84872, 293.73975, 175.58543, 287.87392, 304.40044, 294.23277,
268.17933, 309.02819, 253.19897, 265.68756, 290.41261, 333.8446,
248.33467, 298.56631, 196.18183, 249.01214, 239.07566, 272.0436,
266.38371, 244.71529, 230.62195, 280.98915, 327.92842, 291.64174,
290.58153, 278.05094, 242.61752, 290.2778, 349.53173, 206.13951,
293.64674, 201.95774, 353.00234, 301.41944, 266.58184, 313.45438,
290.98948, 287.79774, 334.35567, 276.27736, 271.85967, 233.80236,
275.925, 292.44499, 275.67027, 306.44843, 293.76468, 300.68248,
277.37136, 258.36308, 215.93238, 304.53151, 282.98405, 284.24563,
267.54523, 278.81698, 293.47491, 274.20848, 325.56625, 338.29286,
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305.10127, 317.73826, 279.00676, 311.32111, 263.20577, 295.35872,
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286.49722, 317.47413, 294.87445, 332.89844, 285.07891, 294.75732,
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315.88441, 400.94726, 296.03271, 276.19477, 363.93767, 309.51741,
249.73923, 359.06376, 268.23778, 340.45045, 347.93015, 331.94389,
265.17793, 339.92872, 302.63463, 271.15349, 287.00579, 245.92875,
333.74443, 395.13695, 319.19868, 280.50088, 274.27643, 298.57925,
301.34704, 343.32807, 322.24002, 260.04914, 305.97704, 299.22391,
311.31108, 314.82843, 284.82475, 263.54816, 305.83341, 275.05002,
291.21003, 295.85667, 325.4418, 297.35548, 328.91424, 348.46255,
374.91294, 278.72346, 336.15884, 284.42308, 301.46666, 280.60555,
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311.62633, 360.55586, 252.44882, 275.11625, 224.22946, 263.59549,
275.29046, 321.90792, 332.09749, 282.92641, 282.89338, 292.94236,
329.33191, 242.67135, 284.59736, 372.01791, 284.58945, 304.33581,
262.18477, 263.41397, 397.0077, 233.13107, 354.51546, 330.58595,
267.95011, 272.97652, 320.41706, 269.92821, 311.25004, 248.15808,
260.19179, 278.38501, 314.36786, 296.30594, 295.8064, 362.28497,
236.54304, 280.39167, 268.16006, 282.61124, 328.43024, 266.80519,
272.71165, 317.02057, 302.61842, 313.83703, 299.44275, 347.81048,
248.96742, 244.98621, 314.78989, 228.19594, 277.08832, 321.66255,
307.59243, 285.20515, 329.42832, 327.38645, 266.39655, 284.52323,
253.67779, 239.9784, 315.34247, 324.64586, 339.56843, 334.15503,
324.9195, 289.38614, 279.53691, 346.34106, 299.6327, 264.50415,
329.80362, 257.43317, 310.62546, 325.04705, 266.05947, 252.10474,
377.03047, 284.46253, 252.06975, 307.29189, 325.21219, 318.36119,
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298.31588, 266.69611, 343.64082, 249.20663, 368.61185, 314.38577,
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291.16644, 261.86653, 326.92465, 271.35729, 298.4598, 315.83039,
251.59546, 248.09457, 250.90401, 313.28557, 281.10513, 289.41966,
322.99908, 308.48391, 303.46002, 259.34959, 285.41517, 276.54708,
215.90873, 320.46273, 307.92637, 329.45411, 280.43586, 319.99516,
295.35201, 270.81816, 260.6502, 277.0142, 285.64532, 217.5607,
245.98812, 226.29258, 309.23674, 220.03202, 387.01331, 268.84682,
248.05849, 279.63382, 285.34802, 284.09757, 273.3005, 259.08111,
264.10347, 386.52038, 210.39955, 320.20292, 245.43105, 301.72215,
262.78873, 207.51776, 329.13312, 321.57565, 258.19365, 291.23977,
310.97158, 272.66014, 259.28731, 246.29506, 319.95987, 294.63771,
311.32836, 312.20071, 350.12412, 308.50961, 237.55051, 343.6281,
340.66271, 297.44784, 331.91189, 276.27969, 301.48287, 321.79642,
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268.42791, 269.33266, 334.05385, 319.43236, 270.38822, 168.24661,
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361.43941, 342.54578, 247.997, 316.69669, 232.59609, 285.6277,
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339.58608, 266.53576, 297.53657, 278.7528, 348.01977, 328.51913,
289.18677, 319.62583, 311.31862, 271.67348, 279.98333, 227.36405,
276.27979, 290.28081, 280.66062, 255.47229, 291.26037, 264.89911,
304.19635, 330.39094, 334.60314, 272.9507, 294.44286, 346.35474,
332.11805, 313.19078, 104.71963, 293.40003, 329.98007, 247.70109,
259.13664, 325.72004, 239.1354, 294.74629, 291.78074, 328.38065,
334.70175, 312.16118, 215.75044, 297.27003, 202.36576, 271.84798,
291.59486, 303.22928, 221.18819, 315.37282, 238.00923, 233.12403,
269.9957, 259.90847, 311.6859, 272.51505, 346.11677, 260.70023,
275.42651, 290.61255, 307.04942, 323.60677, 219.96542, 305.55666,
283.99912, 267.52644, 285.16624, 301.02858, 260.05581, 283.41617,
244.09153, 290.04512, 353.63745, 317.37715, 241.34487, 321.14259,
258.36885, 261.37509, 348.62232, 300.73864, 327.22453, 228.55662,
268.91226, 314.09536, 260.56452, 283.06898, 319.64052, 275.96927,
296.46456, 295.56963, 276.68877, 289.44363, 296.45405, 240.71778,
310.15017, 237.00255, 240.61887, 244.14616, 316.83501, 253.25562,
230.76127, 304.57009, 364.11619, 267.0067, 308.55546, 275.38505,
293.96026, 243.73364, 321.01363, 316.79925, 277.67496, 289.51552,
307.85001, 279.01546, 317.36872, 242.91248, 279.70631, 226.23475,
386.36518, 326.81052, 235.98733, 288.59577, 305.13604, 353.10836,
274.67248, 327.51103, 322.45477, 315.17773, 316.73504, 189.05388,
267.47862, 316.6865, 272.59329, 281.07099, 327.16369, 280.24953,
253.59041, 314.05915, 341.81589, 286.40082, 323.2246, 218.71734,
256.56632, 239.05101, 292.73646, 262.55946, 280.23444, 219.2759,
293.2041, 342.50186, 251.37571, 321.82169, 290.32648, 233.07586,
293.06438, 333.05446, 222.39499, 298.17628, 201.93622, 354.07415,
294.31312, 301.73295, 328.2708, 278.76013, 289.11145, 313.0081,
275.55262, 287.71408, 272.14237, 300.88391, 308.66827, 284.93954,
312.92511, 335.31426, 276.17927, 320.79382, 273.71349, 255.89581,
300.24576, 292.25961, 288.96434, 303.44888, 253.07684, 248.08721,
281.36322, 326.35893, 335.85343, 253.90892, 328.49694, 272.70062
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302.42232, 318.3244, 315.16283, 273.26457, 306.98393, 342.15998,
271.74761, 330.01561, 239.3113, 292.38404, 220.32939, 320.98693,
328.77846, 312.25874, 320.16997, 315.01401, 278.54675, 297.93796,
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389.47902, 323.26406, 303.8882, 287.85783, 320.78071, 260.5962,
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334.04519, 242.21659, 273.88791, 319.75284, 303.14072, 369.25668,
315.38962, 238.82989, 389.86658, 291.40597, 256.2491, 328.59089,
270.08341, 346.88612, 351.05896, 313.98005, 276.49836, 341.01902,
304.44641, 279.94384, 297.38058, 260.15889, 301.88881, 385.34273,
281.3716, 305.96796, 235.56287, 313.06217, 242.71572, 354.28779,
305.7085, 256.87025, 288.9405, 291.11581, 307.62043, 321.73213,
283.82863, 248.89211, 291.42861, 273.85537, 307.50928, 316.5518,
321.39642, 289.61352, 319.72759, 339.1263, 364.61416, 277.72976,
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391.40329, 234.55338, 376.94785, 332.07567, 246.3079, 299.29627,
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258.48696, 306.43744, 323.78058, 280.04595, 297.34385, 263.67336,
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337.82102, 262.12682, 291.70902, 281.91251, 297.9659, 217.23621,
359.04224, 265.45122, 324.9777, 334.42103, 237.77726, 228.74243,
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279.19136, 283.27782, 256.21676, 298.22446, 245.34207, 363.90223,
206.35297, 297.69943, 250.76662, 299.09484, 296.26682, 217.5044,
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3239L, 3296L, 3298L, 3371L, 3502L, 3546L, 3559L, 3560L, 3561L,
3566L, 3589L, 3659L, 3669L, 3714L, 3717L, 3738L, 3744L, 3765L,
3768L, 3778L, 3782L, 3826L, 3840L, 3842L, 3848L, 3894L, 3968L,
3972L, 3984L, 4007L, 4064L, 4103L, 4160L, 4209L, 4212L, 4337L,
4377L, 4432L, 4671L, 4674L, 4675L, 4686L, 4714L, 4724L, 4761L,
4773L, 4853L, 4871L, 4908L, 4931L, 4993L, 5000L, 5039L, 5055L,
5081L, 5100L, 5173L, 5260L, 5265L, 5281L, 5331L, 5368L, 5412L,
5419L, 5435L, 5476L, 5482L, 5485L, 5500L, 5561L, 5591L, 5618L,
5629L, 5641L, 5745L, 5767L, 5783L, 5833L, 5876L, 5884L, 5933L,
5938L, 5943L, 5960L, 5997L, 6000L, 6016L, 6021L, 6109L, 6116L,
6124L, 6135L, 6157L, 6166L, 6172L, 6173L, 6176L, 6181L, 6214L,
6216L, 6226L, 6229L, 6264L, 6280L, 6282L, 6315L, 6330L, 6358L,
6366L, 6368L, 6375L, 6397L, 6463L, 6541L, 6543L, 6598L, 6604L,
6644L, 6649L, 6669L, 6690L, 6692L, 6702L, 6711L, 6716L, 6718L,
6725L, 6740L, 6769L, 6775L, 6781L, 6829L, 6841L, 6853L, 6860L,
6872L, 6890L, 6891L, 6902L, 6905L, 6913L, 6914L, 6927L, 6934L,
6937L, 6947L, 6965L, 6980L, 6981L, 7021L, 7072L, 7094L, 7104L,
7121L, 7136L, 7138L, 7148L, 7149L, 7168L, 7169L, 7222L, 7258L,
7263L, 7266L, 7292L, 7347L, 7350L, 7360L, 7382L, 7390L, 7419L,
7423L, 7455L, 7463L, 7471L, 7482L, 7509L, 7528L, 7543L, 7577L,
7583L, 7587L, 7593L, 7615L, 7616L, 7617L, 7633L, 7650L, 7654L,
7674L, 7688L, 7706L, 7718L, 7723L, 7748L, 7766L, 7797L, 7811L,
7813L, 7820L, 7839L, 7893L, 7899L, 7910L, 7926L, 7944L, 7945L,
7947L, 7954L, 7955L, 7959L, 7982L, 7990L, 8025L, 8031L, 8041L,
8044L, 8049L, 8062L, 8069L, 8072L, 8085L, 8090L, 8110L, 8122L,
8134L, 8141L, 8193L, 8196L, 8201L, 8203L, 8208L, 8233L, 8234L,
8236L, 8271L, 8273L, 8276L, 8284L, 8307L, 8328L, 8333L, 8354L,
8367L, 8386L, 8412L, 8421L, 8441L, 8452L, 8478L, 8488L, 8504L,
8509L, 8518L, 8534L, 8548L, 8558L, 8574L, 8578L, 8585L, 8620L,
8654L, 8660L, 8662L, 8663L, 8704L, 8707L, 8733L, 8751L, 8757L,
8817L, 8822L, 8824L, 8831L, 8840L, 8841L, 8851L, 8858L, 8877L,
8904L, 8919L, 8944L, 8945L, 8951L, 8954L, 8959L, 8966L, 8986L,
9049L, 9058L, 9075L, 9088L, 9111L, 9124L, 9132L, 9138L, 9148L,
9171L, 9183L, 9188L, 9207L, 9257L, 9280L, 9284L, 9288L, 9292L,
9316L, 9335L, 9341L, 9354L, 9392L, 9428L, 9439L, 9451L, 9483L,
9484L, 9493L, 9498L, 9532L, 9542L, 9566L, 9569L, 9582L, 9592L,
9613L, 9628L, 9634L, 9643L, 9647L, 9659L, 9665L, 9687L, 9697L,
9708L, 9713L, 9762L, 9773L, 9815L, 9825L, 9829L, 9830L, 9839L,
9842L, 9848L, 9854L, 9865L, 9868L, 9891L, 9896L, 9925L, 9945L,
10012L, 10023L, 10035L, 10046L, 10059L, 10067L, 10096L, 10105L,
10106L, 10137L, 10146L, 10154L, 10173L, 10178L, 10195L, 10201L,
10202L, 10233L, 10243L, 10259L, 10273L, 10277L, 10287L, 10288L,
10315L, 10316L, 10342L, 10345L, 10348L, 10354L, 10361L, 10372L,
10417L, 10420L, 10430L, 10454L, 10476L, 10477L, 10490L, 10498L,
10499L, 10532L, 10533L, 10550L, 10553L, 10557L, 10560L, 10572L,
10616L, 10663L, 10667L, 10687L, 10712L), class = "data.frame")
and I want to add another column here with values taken from another data. The other data is this one:
> dput(new)
structure(list(CNTRYID = structure(1:2, .Label = c("Czech Republic",
"Denmark", "France", "Greece", "Hungary", "Italy", "Lithuania",
"Netherlands", "Poland", "Slovak Republic", "Slovenia", "Spain",
"United Kingdom"), class = "factor"), Freq = c(184, 518), Mean = c(299.71,
294.09), s.e. = c(4.39, 2.28), SD = c(36.73, 44.8), s.e = c(3.4,
2.12)), row.names = 1:2, class = c("intsvy.mean", "data.frame"
))
What I want to do is to take the value under Mean from the second data.frame that is associated with, e.g. the Czech Republic, and put it in the first data.frame so that everywhere where CNTRYID is Czech Republic the value 299.71 to appear in a new column, say, test$MEAN. Then 294.09 to appear in every row where the CNTRYID is Denmark and so on. You might require package "intsvy" since one of the classes here is "intsvy.mean". I have extracted this from a large dataset I am working with, so there might be some additional labels etc. but, overall, you should be able to reproduce it. Thank you in advance!
You are looking for merge.
result <- merge(test,new,by="CNTRYID")
Goal
I want to find the duration of lane changes of vehicles as shown in the plot, using lateral position data.
Data
Following is the data for only one vehicle:
> dput(a)
structure(list(Frame.ID = 526:1058, xcoord = c(14.346, 14.367,
14.388, 14.419, 14.458, 14.503, 14.55, 14.6, 14.65, 14.702, 14.754,
14.807, 14.86, 14.913, 14.966, 15.02, 15.072, 15.125, 15.178,
15.23, 15.282, 15.333, 15.384, 15.434, 15.482, 15.529, 15.574,
15.617, 15.657, 15.694, 15.727, 15.755, 15.78, 15.802, 15.823,
15.841, 15.858, 15.874, 15.889, 15.903, 15.917, 15.93, 15.942,
15.955, 15.967, 15.978, 15.989, 16, 16.011, 16.022, 16.033, 16.044,
16.055, 16.065, 16.075, 16.085, 16.095, 16.104, 16.112, 16.12,
16.129, 16.139, 16.151, 16.164, 16.178, 16.195, 16.212, 16.231,
16.25, 16.27, 16.291, 16.312, 16.333, 16.356, 16.379, 16.403,
16.428, 16.455, 16.482, 16.511, 16.542, 16.574, 16.609, 16.646,
16.687, 16.732, 16.783, 16.839, 16.902, 16.967, 17.033, 17.1,
17.168, 17.232, 17.294, 17.354, 17.41, 17.464, 17.513, 17.559,
17.6, 17.636, 17.665, 17.685, 17.694, 17.7, 17.708, 17.725, 17.751,
17.782, 17.817, 17.856, 17.897, 17.939, 17.982, 18.025, 18.067,
18.108, 18.145, 18.178, 18.207, 18.232, 18.255, 18.274, 18.292,
18.308, 18.323, 18.336, 18.349, 18.361, 18.372, 18.383, 18.393,
18.403, 18.413, 18.422, 18.432, 18.441, 18.451, 18.46, 18.469,
18.479, 18.488, 18.496, 18.505, 18.513, 18.521, 18.529, 18.537,
18.544, 18.55, 18.556, 18.562, 18.567, 18.574, 18.58, 18.588,
18.597, 18.609, 18.623, 18.64, 18.662, 18.69, 18.722, 18.76,
18.802, 18.849, 18.899, 18.953, 19.012, 19.076, 19.144, 19.218,
19.299, 19.386, 19.479, 19.574, 19.669, 19.763, 19.855, 19.945,
20.031, 20.112, 20.187, 20.254, 20.31, 20.352, 20.385, 20.412,
20.435, 20.45, 20.455, 20.449, 20.436, 20.416, 20.39, 20.361,
20.328, 20.293, 20.256, 20.217, 20.178, 20.139, 20.1, 20.063,
20.026, 19.99, 19.957, 19.925, 19.895, 19.867, 19.842, 19.819,
19.796, 19.774, 19.751, 19.729, 19.707, 19.685, 19.662, 19.64,
19.617, 19.594, 19.571, 19.547, 19.523, 19.499, 19.473, 19.449,
19.426, 19.404, 19.382, 19.359, 19.336, 19.312, 19.288, 19.263,
19.237, 19.211, 19.184, 19.156, 19.127, 19.097, 19.066, 19.033,
18.998, 18.961, 18.921, 18.878, 18.831, 18.781, 18.727, 18.67,
18.612, 18.554, 18.498, 18.446, 18.397, 18.349, 18.304, 18.264,
18.233, 18.21, 18.194, 18.182, 18.175, 18.171, 18.17, 18.172,
18.177, 18.183, 18.192, 18.202, 18.213, 18.226, 18.241, 18.258,
18.277, 18.298, 18.321, 18.346, 18.371, 18.396, 18.422, 18.447,
18.471, 18.495, 18.518, 18.54, 18.559, 18.577, 18.591, 18.601,
18.606, 18.605, 18.6, 18.593, 18.584, 18.579, 18.58, 18.59, 18.607,
18.629, 18.655, 18.682, 18.711, 18.739, 18.766, 18.792, 18.818,
18.842, 18.864, 18.885, 18.905, 18.924, 18.943, 18.961, 18.98,
19, 19.02, 19.038, 19.054, 19.068, 19.081, 19.092, 19.103, 19.112,
19.121, 19.129, 19.137, 19.144, 19.15, 19.156, 19.161, 19.166,
19.169, 19.172, 19.173, 19.173, 19.171, 19.168, 19.163, 19.156,
19.147, 19.136, 19.123, 19.109, 19.093, 19.078, 19.061, 19.041,
19.017, 18.988, 18.954, 18.918, 18.878, 18.836, 18.795, 18.756,
18.722, 18.693, 18.671, 18.655, 18.642, 18.633, 18.625, 18.619,
18.613, 18.608, 18.602, 18.593, 18.58, 18.562, 18.537, 18.504,
18.46, 18.403, 18.33, 18.234, 18.115, 17.972, 17.806, 17.623,
17.427, 17.223, 17.013, 16.802, 16.592, 16.389, 16.191, 15.998,
15.806, 15.604, 15.386, 15.149, 14.891, 14.617, 14.328, 14.029,
13.722, 13.412, 13.097, 12.773, 12.436, 12.084, 11.723, 11.361,
11.006, 10.663, 10.334, 10.02, 9.723, 9.453, 9.219, 9.027, 8.874,
8.753, 8.657, 8.583, 8.525, 8.481, 8.448, 8.421, 8.4, 8.384,
8.371, 8.36, 8.351, 8.345, 8.338, 8.33, 8.319, 8.304, 8.284,
8.258, 8.224, 8.183, 8.136, 8.084, 8.029, 7.971, 7.912, 7.853,
7.794, 7.736, 7.681, 7.629, 7.581, 7.54, 7.506, 7.482, 7.468,
7.46, 7.459, 7.462, 7.468, 7.477, 7.489, 7.501, 7.514, 7.526,
7.539, 7.55, 7.562, 7.573, 7.584, 7.595, 7.607, 7.62, 7.636,
7.654, 7.675, 7.702, 7.734, 7.773, 7.823, 7.885, 7.96, 8.046,
8.134, 8.213, 8.278, 8.322, 8.342, 8.338, 8.308, 8.258, 8.192,
8.112, 8.023, 7.927, 7.827, 7.725, 7.623, 7.522, 7.424, 7.334,
7.252, 7.183, 7.128, 7.093, 7.078, 7.085, 7.117, 7.177, 7.267,
7.385, 7.525, 7.679, 7.839, 8, 8.155, 8.296, 8.418, 8.519, 8.606,
8.682, 8.749, 8.82, 8.891, 8.956, 9.012, 9.057, 9.09, 9.126,
9.162, 9.197, 9.227, 9.249, 9.257, 9.254, 9.251, 9.247), Lane = c(2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L)), row.names = c(NA, -533L), .Names = c("Frame.ID",
"xcoord", "Lane"), class = c("tbl_df", "tbl", "data.frame"))
Method
To estimate the lane change duration, I want to start from the row where the target lane number is reported first time. In the example the target lane is 1 and the number 1 is reported first time when the vehicle touches the pavement marking, as shown in the plot. This point can be added in the data as:
a$rows <- as.numeric(row.names(a)) # Row numbers
a$lch <- a$xcoord[match(head(which(a$Lane==1),1), a$rows)]
For this point I want to find the difference from every other point.
a$difference <- abs(a$lch - a$xcoord)
Then, comparing the differences in both directions, there will be some rows where the differences will be quite similar indicating that lateral position was almost similar. The first instances in both directions will be treated as the limits of lane change maneuver.
How can I achieve this comparison part in R? I don't know how to 'move' from Frame.ID 929 (this example) upwards and downwards to compare where the differences become similar.
Not sure if it's the best/fastest solution, but the idea is to calculate the differences between two consecutive "difference" columns you created and pick a small value as a threshold to flag that they started becoming similar. Then get the row closest to the time point of the change for each lane.
Note that I renamed your dataset as dt. Run the process step by step to see how the process works. If you are happy with it you can make the script shorter by combining some commands.
dt$rows <- as.numeric(row.names(dt)) # Row numbers
dt$lch <- dt$xcoord[match(head(which(dt$Lane==1),1), dt$rows)]
dt$difference <- abs(dt$lch - dt$xcoord)
library(dplyr)
dt %>%
mutate(frameIDchange = Frame.ID[difference==0], # spot the frame ID of the change
diff_diff = difference - lag(difference, default=difference[1]), # find the difference of two consequtive differences
flag = ifelse(abs(diff_diff) <= 0.01,1,0)) %>% # flag if the difference of two consequtive differences is equal or less to our threshold (0.01)
filter(flag==1) %>% # keep only rows with threshold difference
mutate(frameIDdiff = abs(Frame.ID-frameIDchange)) %>% # calculate distance of frame IDs
group_by(Lane) %>% # for each lane
filter(frameIDdiff== min(abs(frameIDdiff))) # return the frame id closest to the change frame id with a difference equal or less to our threshold
# Frame.ID xcoord Lane rows lch difference frameIDchange diff_diff flag frameIDdiff
# 1 896 18.593 2 371 12.436 6.157 929 -0.009 1 33
# 2 953 8.351 1 428 12.436 4.085 929 0.009 1 24
This tells you that the frame ids where the differences started to become similar (0.01 threshold) are 896 and 953 for lanes 2 and 1 respectively. Obviously the frame id of the change (929) belongs between those frames as expected.
You can also experiment with slightly higher/less threshold values to see how the results change.