Hello,

This is pretty basic ggplot.


lm1 <- ggplot(onepctCO2MEDIAN, aes(x, y)) +
  geom_point(colour = 'blue') +
  geom_smooth(method = 'lm')

lm1


If you want to combine several datasets, you will have to have a variable telling which dataset is which. In the example below, this is column 'id'.


onepctCO2MEDIAN2 <- onepctCO2MEDIAN
onepctCO2MEDIAN2$y <- jitter(onepctCO2MEDIAN2$y) + 2
onepctCO2MEDIAN$id <- 1
onepctCO2MEDIAN2$id <- 2
df2 <- rbind(onepctCO2MEDIAN, onepctCO2MEDIAN2)

ggplot(df2, aes(x, y, group = id, colour = factor(id))) +
  geom_point() +
  geom_smooth(method = 'lm')


Hope this helps,

Rui Barradas

Às 15:21 de 05/06/19, rain1290--- via R-help escreveu:
I am trying to plot, using ggplot, a series of scatter plots with regression lines for 
several datasets. I started with the following dataset, "onepectCO2MEDIAN". The 
data for this dataset is as follows:
     onepctCO2MEDIAN
                     x          y
     layer.1   0.000000000  0.0000000
     layer.2   0.006794447  4.9002490
     layer.3   0.014288058  0.1608000
     layer.4   0.022087920  6.6349133
     layer.5   0.030797357 -1.2429506
     layer.6   0.038451072  1.5643374
     layer.7   0.048087904 -2.2659035
     layer.8   0.058677729  2.2070045
     layer.9   0.069261406 -2.3677001
     layer.10  0.080524530 -1.0913506
     layer.11  0.092760246  0.4099940
     layer.12  0.103789609 -0.1259727
     layer.13  0.116953168 -2.4138253
     layer.14  0.129253298  7.0890257
     layer.15  0.141710050 -0.7593539
     layer.16  0.156002052  0.0454416
     layer.17  0.170648172 -1.5349683
     layer.18  0.185318425  6.5524201
     layer.19  0.199463055 -0.8312563
     layer.20  0.213513337 -2.5099183
     layer.21  0.228839271  0.1365968
     layer.22  0.246981293 -1.3719845
     layer.23  0.263012767 -0.8712988
     layer.24  0.278505564  0.6632584
     layer.25  0.293658361  0.7938036
     layer.26  0.310747266  3.4880637
     layer.27  0.325990349 -4.4612208
     layer.28  0.342517540  0.0871734
     layer.29  0.362751633 -1.4171578
     layer.30  0.380199537 -0.9956508
     layer.31  0.394992948  0.3215526
     layer.32  0.414373398  3.1403866
     layer.33  0.430690214 -0.7376099
     layer.34  0.449738145 -2.4860541
     layer.35  0.470167458 -3.4235858
     layer.36  0.489019871  0.4824748
     layer.37  0.507242471 -0.9785386
     layer.38  0.524314284  8.5359684
     layer.39  0.543750525  5.4844742
     layer.40  0.564234197  3.2149367
     layer.41  0.583679616  3.9168916
     layer.42  0.601459444  4.4907020
     layer.43  0.619924664  6.5410410
     layer.44  0.639932007  4.8068650
     layer.45  0.661347181  8.1510170
     layer.46  0.684117317  0.2697413
     layer.47  0.704829752 -0.1807501
     layer.48  0.725045770  9.7181249
     layer.49  0.745165825  1.5406466
     layer.50  0.765016139 -1.6476041
     layer.51  0.783461511  4.8024603
     layer.52  0.806382924  4.0421516
     layer.53  0.829241335  9.3756512
     layer.54  0.849924415  5.3305050
     layer.55  0.871352434  7.5445803
     layer.56  0.893632233  6.4679547
     layer.57  0.916052133  2.8096065
     layer.58  0.938579470  5.3921661
     layer.59  0.959907651  7.2043689
     layer.60  0.981643587  3.3350806
     layer.61  1.004116774  8.8690707
     layer.62  1.028363466  1.7861299
     layer.63  1.054009140  6.2555038
     layer.64  1.072440803  7.6079236
     layer.65  1.094457805  7.6871483
     layer.66  1.123176277  4.7787764
     layer.67  1.149430871 12.7110502
     layer.68  1.170912921 -0.7156284
     layer.69  1.196743071  1.6490899
     layer.70  1.218625903  3.0363024
     layer.71  1.241868377  4.2974769
     layer.72  1.267941594  1.9543778
     layer.73  1.290708780  3.9986964
     layer.74  1.313222289  4.5179472
     layer.75  1.339045882  0.9337905
     layer.76  1.362803459  3.3050770
     layer.77  1.384450197  3.5422970
     layer.78  1.409720302  5.9973660
     layer.79  1.435851157  0.5081869
     layer.80  1.455592215  7.9661630
     layer.81  1.479495347  9.9460496
     layer.82  1.506051958  3.7908372
     layer.83  1.525728464  2.5735847
     layer.84  1.549362063 10.1404974
     layer.85  1.573440671 13.7408304
     layer.86  1.600278735  0.9335771
     layer.87  1.623879492  9.7588742
     layer.88  1.650029302  1.2769395
     layer.89  1.672362328 13.4970906
     layer.90  1.700221121 10.2087502
     layer.91  1.724793375  1.6811275
     layer.92  1.751070559  6.1178992
     layer.93  1.778022110 -0.1567626
     layer.94  1.803022087  3.8237479
     layer.95  1.830668867  4.4331468
     layer.96  1.855736911  5.9790707
     layer.97  1.882615030 11.3104333
     layer.98  1.909218490  8.2142607
     layer.99  1.938130021 15.3209674
     layer.100 1.963727593  5.8178217
     layer.101 1.993271947  9.6004907
     layer.102 2.022548139  3.4063646
     layer.103 2.050679922  4.7375010
     layer.104 2.078064442  3.0133019
     layer.105 2.104113460  5.5659522
     layer.106 2.133597612 12.0346333
     layer.107 2.164026260 -0.4028320
     layer.108 2.194852829 10.5996780
     layer.109 2.224257946  5.4479584
     layer.110 2.252194643  4.7052374
     layer.111 2.277335048 14.0962019
     layer.112 2.304058313  5.7149016
     layer.113 2.330930233  3.7780072
     layer.114 2.357022762  4.4120620
     layer.115 2.386489272  4.1866085
     layer.116 2.417503953  6.9078802
     layer.117 2.448524356  2.7825739
     layer.118 2.478698969  7.6171786
     layer.119 2.510175705 10.2410603
     layer.120 2.539697886  8.1820711
     layer.121 2.567915559  4.8275494
     layer.122 2.597463250 19.1624883
     layer.123 2.627518773 16.0677109
     layer.124 2.658759236 12.5897081
     layer.125 2.692401528  9.2907988
     layer.126 2.721903205  7.4262502
     layer.127 2.753021359  9.3902518
     layer.128 2.786313415 12.6193550
     layer.129 2.819564104 11.1121040
     layer.130 2.850823164 15.7907100
     layer.131 2.880394101 10.7425287
     layer.132 2.911391258  7.7971430
     layer.133 2.942965150  8.8060858
     layer.134 2.974468350 17.5606266
     layer.135 3.008983612 17.3088605
     layer.136 3.040015221 13.4500543
     layer.137 3.072668672 14.6377884
     layer.138 3.105982423  8.0798552dput(onepctCO2MEDIAN)    
dput(onepctCO2MEDIAN)
     structure(list(x = c(0, 0.00679444684647024, 0.014288058038801,
     0.0220879195258021, 
0.0307973567396402,0.0384510718286037,0.0480879042297602,
     0.0586777292191982, 0.0692614056169987, 
0.080524530261755,0.0927602462470531,
     0.103789608925581, 0.116953168064356, 0.129253298044205, 0.141710050404072,
     0.156002052128315, 0.170648172497749, 0.185318425297737, 0.199463054537773,
     0.21351333707571, 0.22883927077055, 0.246981292963028, 0.263012766838074,
     0.278505563735962, 0.29365836083889, 0.310747265815735, 0.325990349054337,
     0.342517539858818, 0.362751632928848, 0.380199536681175, 0.39499294757843,
     0.414373397827148, 0.430690214037895, 0.449738144874573, 0.470167458057404,
     0.489019870758057, 0.507242470979691, 0.524314284324646, 0.543750524520874,
     0.56423419713974, 0.583679616451263, 0.601459443569183, 0.619924664497375,
     0.639932006597519, 0.661347180604935, 0.684117317199707, 0.704829752445221,
     0.725045770406723, 0.745165824890137, 0.765016138553619, 0.783461511135101,
     0.806382924318314, 0.829241335391998, 0.84992441534996, 0.871352434158325,
     0.893632233142853, 0.916052132844925, 0.938579469919205, 0.959907650947571,
     0.981643587350845, 1.00411677360535, 1.02836346626282, 1.05400913953781,
     1.07244080305099, 1.09445780515671, 1.12317627668381, 1.14943087100983,
     1.17091292142868, 1.19674307107925, 1.21862590312958, 1.24186837673187,
     1.26794159412384, 1.2907087802887, 1.31322228908539, 1.33904588222504,
     1.36280345916748, 1.38445019721985, 1.40972030162811, 1.43585115671158,
     1.45559221506119, 1.47949534654617, 1.50605195760727, 1.52572846412659,
     1.5493620634079, 1.5734406709671, 1.60027873516083, 1.62387949228287,
     1.65002930164337, 1.67236232757568, 1.70022112131119, 1.72479337453842,
     1.75107055902481, 1.77802211046219, 1.80302208662033, 1.83066886663437,
     1.85573691129684, 1.88261502981186, 1.90921849012375, 1.93813002109528,
     1.96372759342194, 1.99327194690704, 2.02254813909531, 2.05067992210388,
     2.07806444168091, 2.1041134595871, 2.13359761238098, 2.16402626037598,
     2.19485282897949, 2.2242579460144, 2.25219464302063, 2.27733504772186,
     2.30405831336975, 2.33093023300171, 2.35702276229858, 2.38648927211761,
     2.41750395298004, 2.44852435588837, 2.47869896888733, 2.51017570495605,
     2.53969788551331, 2.567915558815, 2.59746325016022, 2.62751877307892,
     2.65875923633575, 2.69240152835846, 2.72190320491791, 2.75302135944366,
     2.78631341457367, 2.8195641040802, 2.85082316398621, 2.88039410114288,
     2.91139125823975, 2.94296514987946, 2.97446835041046, 3.00898361206055,
     3.04001522064209, 3.07266867160797, 3.10598242282867), y = c(0,
     4.90024901723162, 0.160799993152722, 6.63491326258641, -1.24295055804536,
     1.56433744259162, -2.26590352245208, 2.20700446463354, -2.36770012911069,
     -1.09135061899174, 0.409993989292701, -0.125972681525582, 
-2.41382533818026,
     7.08902570153028, -0.759353880417294, 0.0454415959640926, 
-1.53496826259972,
     6.55242014096194, -0.831256280861552, -2.50991825629084, 0.136596820654013,
     -1.37198445498419, -0.871298832596736, 0.663258363762466, 
0.793803634291308,
     3.48806373666998, -4.46122081238949, 0.0871733966938564, -1.41715777257774,
     -0.995650815648318, 0.32155262317503, 3.14038657369241, -0.737609879885404,
     -2.48605406511292, -3.423585843908, 0.482474753780281, -0.978538630093809,
     8.53596837794201, 5.48447420320695, 3.21493665820644, 3.91689160157513,
     4.49070195980797, 6.54104103157039, 4.80686500146557, 8.15101701282067,
     0.26974132191657, -0.180750068063062, 9.71812491230244, 1.54064657400204,
     -1.64760408795688, 4.80246028991894, 4.04215159914344, 9.37565121768513,
     5.33050496938428, 7.54458026088508, 6.46795470819342, 2.80960651433971,
     5.39216613235986, 7.20436888038562, 3.3350806460997, 8.86907069895943,
     1.78612988613659, 6.25550382050395, 7.60792364896564, 7.68714830528144,
     4.77877638957615, 12.7110501777314, -0.715628443181046, 1.64908991824022,
     3.03630240714679, 4.29747688442346, 1.95437780501881, 3.99869636910933,
     4.51794724689848, 0.933790484492299, 3.30507700050003, 3.5422970157433,
     5.99736597322524, 0.508186860060022, 7.96616300581067, 9.94604963036295,
     3.79083717222623, 2.57358468532258, 10.1404974171776, 13.7408303595752,
     0.933577123801399, 9.75887417074129, 1.27693947132921, 13.4970905965787,
     10.2087501765735, 1.68112753028756, 6.1178991508927, -0.156762622680077,
     3.82374791691426, 4.43314678736265, 5.97907067167507, 11.3104332518482,
     8.21426074201525, 15.320967360602, 5.81782169471483, 9.6004907412354,
     3.40636455909704, 4.73750103921864, 3.0133019468806, 5.56595224859066,
     12.0346332527215, -0.40283199827104, 10.5996779538754, 5.44795836991128,
     4.70523736412729, 14.096201892183, 5.71490161813391, 3.77800720810782,
     4.41206200639436, 4.18660847858423, 6.90788020044911, 2.78257393345915,
     7.61717857379431, 10.2410602647684, 8.18207106836167, 4.82754943871433,
     19.1624882857155, 16.0677109398509, 12.589708067017, 9.29079879799404,
     7.42625019725314, 9.39025179806185, 12.6193550331438, 11.1121039747257,
     15.7907099734986, 10.7425286789233, 7.79714300307344, 8.80608578166101,
     17.5606266346039, 17.3088604929222, 13.4500543478523, 14.6377884248645,
     8.07985518296064)), class = "data.frame", row.names = c("layer.1",
     "layer.2", "layer.3", "layer.4", "layer.5", "layer.6", "layer.7",
     "layer.8", "layer.9", "layer.10", "layer.11", "layer.12", "layer.13",
     "layer.14", "layer.15", "layer.16", "layer.17", "layer.18", "layer.19",
     "layer.20", "layer.21", "layer.22", "layer.23", "layer.24", "layer.25",
     "layer.26", "layer.27", "layer.28", "layer.29", "layer.30", "layer.31",
     "layer.32", "layer.33", "layer.34", "layer.35", "layer.36", "layer.37",
     "layer.38", "layer.39", "layer.40", "layer.41", "layer.42", "layer.43",
     "layer.44", "layer.45", "layer.46", "layer.47", "layer.48", "layer.49",
     "layer.50", "layer.51", "layer.52", "layer.53", "layer.54", "layer.55",
     "layer.56", "layer.57", "layer.58", "layer.59", "layer.60", "layer.61",
     "layer.62", "layer.63", "layer.64", "layer.65", "layer.66", "layer.67",
     "layer.68", "layer.69", "layer.70", "layer.71", "layer.72", "layer.73",
     "layer.74", "layer.75", "layer.76", "layer.77", "layer.78", "layer.79",
     "layer.80", "layer.81", "layer.82", "layer.83", "layer.84", "layer.85",
     "layer.86", "layer.87", "layer.88", "layer.89", "layer.90", "layer.91",
     "layer.92", "layer.93", "layer.94", "layer.95", "layer.96", "layer.97",
     "layer.98", "layer.99", "layer.100", "layer.101", "layer.102",
     "layer.103", "layer.104", "layer.105", "layer.106", "layer.107",
     "layer.108", "layer.109", "layer.110", "layer.111", "layer.112",
     "layer.113", "layer.114", "layer.115", "layer.116", "layer.117",
     "layer.118", "layer.119", "layer.120", "layer.121", "layer.122",
     "layer.123", "layer.124", "layer.125", "layer.126", "layer.127",
     "layer.128", "layer.129", "layer.130", "layer.131", "layer.132",
     "layer.133", "layer.134", "layer.135", "layer.136", "layer.137",
     "layer.138"))
I started with the following to generate the first regression line and scatter 
plot:    lm<-ggplot(onepctCO2MEDIAN) +
     geom_jitter(aes(RCP1pctCO2cumulativeMedian[1:138], departurea),
     colour="blue") + geom_smooth(aes(RCP1pctCO2cumulativeMedian[1:138],
     departurea), method=lm)
But I receive this error:    Warning message:
     Computation failed in `stat_smooth()`:
     'what' must be a function or character string
A blue scatter plot is successfully generated, but the problem is that the 
regression line does not appear, presumably related to the above warning.
Is there a reason for this? I would appreciate any assistance!
        [[alternative HTML version deleted]]

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