[R] normalised curve fitting with error bars

Pooja Jain pcxpj1 at nottingham.ac.uk
Fri Jul 3 17:56:48 CEST 2009


Dear List,


  My data consist of nine columns and about 50,000 rows. It looks like  
this.

-9.0225	3.46464	2.80926	-0.3847	3.73735	1.1058	-2.98936	1.38901	-8.1846
-2.4315	-5.1189	1.8225	3.3798	1.7874	4.693	-3.9286	1.4266	5.7849
-3.4894	-4.0305	3.7879	3.5195	2.9186	2.8685	-6.126	4.978	4.9381
4.5282	3.62558	-3.0455	4.6518	1.39746	0.68652	3.5708	-3.6404	-4.2963
-1.3183	0.6752	-4.0382	-2.5386	-0.6459	1.0689	-0.6392	-6.4141	-4.101
-1.3735	3.1098	-2.8291	-5.2548	-3.3798	1.3959	-1.8605	0.1522	2.1818
-1.0488	0.1071	-3.7154	-1.3748	-5.6218	-0.9989	-2.6763	-4.6548	0.5449
7.948	2.0673	3.8729	8.0537	2.79	-3.6963	8.4584	-1.5122	-6.3354
4.5827	6.1787	-3.1787	1.4554	5.6973	5.3386	10.6077	-0.0424	3.3653
4.1653	8.0266	1.9509	4.2077	5.4182	4.1797	7.9248	1.1502	0.753
3.6046	3.6743	11.8299	9.5704	10.7384	8.675	4.9277	13.6898	13.3279
18.4431	12.3946	22.1126	22.7109	19.4623	17.3565	15.27	17.5922	19.5873


The values in each of the nine columns are almost normally distributed  
but have slightly different heights of nine normalised bell shaped  
plots.

I was trying to plot each row as a point with error bars. The central  
point will be the mean of the nine values in each of rows and the max  
and min of the row will be the upper and lower bound of the error  
bar.  I expect a normally distributed plot with spikes around. Can any  
one please help me plotting data in this way ?

Many thanks for any input.

-Pooja

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