Dear:
I am trying to plot the histogram graph for my observed data. Then plot
fitted distribution on the same graph of histogram plot in R.
1. histogram plot y.
2. based on "1", plotting y1 v. x;
3. based on "1", plotting y2 v. x;
4. based on "1", plotting y3 v. x;
All of these four plots must be on the same graph.
However, I found the difficulty is that the y-axis and x-axis for histogram
plot and fitted distribution plot are different.
For histogram plot, y presents the frequency and x presents events.
For fitted distribution plots, y presents the probability and x presents
another variable.
However, I found out I need histogram plot rather than barplot. This is
major problem of this work.
The code I used:
par(font=1,font.lab=10,font.axis=6)
pts18=barplot(y,
ylim=c(0,0.2),xlim=c(2,52),axes=FALSE,border=TRUE,names.arg=x,col="white")
axis(2,las=1)
lines(spline(pts18,y1,n=300,method="natural"),type="l",lty=1)
lines(spline(pts18,y2,n=300,method="natural"),type="l",lty=2)
lines(spline(pts18,y3,n=300,method="natural"),type="l",lty=5)
The data are:
The observed data:
y<-c(0.098441926, 0.166430595, 0.121813031, 0.104815864, 0.074362606,
0.075779037, 0.055949008, 0.040368272, 0.03470255, 0.029745042,
0.032577904, 0.02266289, 0.014872521, 0.014872521, 0.010623229,
0.01203966, 0.01203966, 0.008498584, 0.009206799, 0.009915014,
0.006373938, 0.003541076, 0.001416431, 0.001416431, 0.005665722,
0.002124646, 0.000708215, 0.001416431, 0.004249292, 0.002832861,
0.004957507, 0.002124646, 0.000708215, 0, 0.000708215, 0.002124646,
0.001416431, 0.001416431, 0.001416431, 0, 0.000708215)
Fitted distribution 1:
y1<-c(0.03419162, 0.154201321, 0.129581481, 0.108892454, 0.091506645,
0.07689666, 0.064619311, 0.054302168, 0.045632264, 0.0383466,
0.032224168, 0.027079245, 0.022755763, 0.01912257, 0.016069453,
0.013503798, 0.011347777, 0.009535987, 0.008013468, 0.006734034,
0.005658876, 0.004755378, 0.003996132, 0.003358108, 0.002821952,
0.002371398, 0.00199278, 0.001674612, 0.001407243, 0.001182562,
0.000993753, 0.00083509, 0.00070176, 0.000589716, 0.000495562,
0.00041644, 0.000349951, 0.000294078, 0.000247125, 0.000207669,
0.000174513)
Fitted distribution 2:
y2<-c(0.078909441, 0.188048499, 0.117871979, 0.089827482, 0.072368317,
0.059928019, 0.050453301, 0.042948906, 0.036851702, 0.031809247,
0.027584779, 0.024010745, 0.020963795, 0.01835029, 0.016097393,
0.014147335, 0.012453559, 0.010978051, 0.009689433, 0.008561564,
0.007572497, 0.006703683, 0.005939358, 0.005266055, 0.004672222,
0.004147912, 0.003684531, 0.003274633, 0.002911751, 0.00259025,
0.002305216, 0.002052353, 0.001827898, 0.001628552, 0.001451415,
0.001293939, 0.001153881, 0.001029262, 0.000918338, 0.000819567,
0.000731589)
Fitted distribution 3:
y3<-c(0.09844545, 0.174856171, 0.1190666, 0.093021492, 0.075639902,
0.062740817, 0.052668044, 0.044568247, 0.037931599, 0.032423244,
0.027808545, 0.023915327, 0.020612892, 0.01779946, 0.015394205,
0.013331948, 0.011559483, 0.010032949, 0.008715898, 0.007577845,
0.006593146, 0.005740133, 0.005000424, 0.004358371, 0.003800615,
0.003315725, 0.002893892, 0.002526689, 0.002206859, 0.001928146,
0.001685148, 0.001473194, 0.001288243, 0.001126794, 0.00098581,
0.000862657, 0.000755047, 0.000660991, 0.000578759, 0.000506847,
0.000443945)
x<- c(0, 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,
60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115,
120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170,
175, 180, 185, 190, 200)
Many Thanks!
Xin
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