Dear all, I have data of the following format Genbank Acc ID Chromosome Start Stop Statistic NM_003146 11 313333 316345 3.4 AK023401 11 303313 310315 -3.1 AF086195 10 613323 716385 -2.2 NM_314521 21 411233 412341 4.5 ... ... ... where Start and Stop indicate the start and stop position in the Chromosome mentioned. Statistics could be fold change or t-statistics. I would like to plot the following: Rows representing Chrosomes 1,2,3, ... , 22, X, Y For each gene I would like to color the region from Start to Stop to the corresponding 'Statistic' 1. There exists a function called amplicon.plot in the geneplotter library but there is insufficient usage information. Can anyone help me using this function ? 2. I think amplicon.plot is only capable of showing high and low expression only (ie. red and blue). Would it be possible to have a range of colors like a heatmap ? 3. Is there a way for me to get the Chromose, Start and Stop positions if I give a Genbank Accession ID directly in R ? Many thanks. Regards, Adai. -- Adaikalavan Ramasamy gisar@nus.edu.sg Research Assistant http://giscompute.gis.nus.edu.sg/~adai Microarray & Expression Genomics Tel: 65-6827 5247 Information & Mathematical Sciences Fax: 65 6827 5204 Genome Institute of Singapore www.genomeinstitute.org