mapping statistics after tophat

[yzhou11]

Hi,

Does anyone know how to use the tophat logs files to find out the information about how many reads were mapped to exonic regions,how many were mapped to introns and how many reads were mapped to intergenic regions?

Also if I provided a .gff file(for example: known exon of human genome) as input to tophat, how to find out how many reads were aligned to exons with no gap, how many reads were aligned to junctions? and how many failed to align?

Thanks.