[R] ggplot2 Xlim

[Felipe Carrillo]

Hi: I need some help.
 I am ploting a bar graph but I can't adjust my x axis scale
 I use this code:
      i <-  qplot(ForkLength,Number,data=FL,geom="bar")
    i + geom_bar(colour="blue",fill="grey65") # too crowded

     FL_dat <- ggplot(FL,aes(x=ForkLength,y=Number)) + geom_bar(colour="green",fill="grey65")
    FL_dat + scale_x_continuous(limits=c(20,170)) # Can't see anything
    
FL	Number
29	22.9
30	63.4
31	199.3
32	629.6
33	2250.1
34	7452.5
35	19352.9
36	17655.5
37	13020.6
38	5856.0
39	2039.4
40	1261.2
41	780.2
42	826.6
43	739.0
44	608.2
45	694.3
46	599.5
47	690.4
48	762.9
49	594.6
50	771.7
51	695.3
52	784.5
53	780.1
54	823.6
55	883.2
56	747.6
57	834.4
58	716.7
59	632.8
60	670.4
61	511.0
62	577.4
63	538.0
64	452.3
65	451.7
66	355.7
67	294.1
68	278.8
69	165.5
70	208.7
71	161.6
72	159.9
73	100.9
74	84.4
75	110.3
76	69.3
77	60.7
78	63.2
79	28.8
80	46.1
81	34.6
82	37.1
83	35.5
84	35.7
85	24.3
86	17.5
87	24.9
88	21.5
89	17.4
90	14.0
91	7.8
92	10.1
93	6.8
94	2.9
95	4.0
96	7.3
97	4.6
98	4.0
99	1.7
100	5.0
101	11.3
102	3.0
103	5.2
104	9.4
105	6.4
106	1.0
107	8.5
108	8.6
109	10.1
110	9.0
111	11.7
112	16.0
113	3.1
114	7.6
115	3.9
116	7.0
117	6.9
118	8.1
119	2.0
121	3.7
122	1.9
123	4.0
124	6.3
126	2.0
127	2.0
128	1.0
129	2.0
132	2.0
134	7.3
135	1.0
136	1.0
139	1.0
142	1.0
145	1.0
152	2.0
161	2.5
172	1.0


Felipe D. Carrillo  
Supervisory Fishery Biologist  
Department of the Interior  
US Fish & Wildlife Service  
California, USA