HIV sequence database

year n_pix/raw_n_pix entropy ent/max_ent median 0.0 ( 154/154 ): 2.6406 0.5243 0.9265 0.5 ( 154/154 ): 3.4854 0.6920 0.9032 1.0 ( 154/154 ): 4.6103 0.9153 0.7607 2.5 ( 154/154 ): 4.6030 0.9138 0.7041 3.0 ( 154/154 ): 4.2013 0.8341 0.5429 4.0 ( 154/154 ): 4.7928 0.9515 0.5074 4.5 ( 154/154 ): 4.7004 0.9332 0.4064 5.0 ( 154/154 ): 4.6789 0.9289 0.4032 5.5 ( 154/154 ): 4.6422 0.9216 0.4303 6.0 ( 154/154 ): 4.7640 0.9458 0.4621 7.5 ( 154/154 ): 4.3931 0.8722 0.3664 Entropy (in nits) vs. yr: corr. coef. = 0.65608 Entropy ratio vs. yr: corr. coef. = 0.65608 Median vs. yr: corr. coef. = -0.93939

**About HDent output:**

year: The years associated with each lane in your gel (user specified). Actually, this column can include any series of unique tags associated with each lane, and does not necessarily have to contain information about sampling time.n_pix/raw_n_pix: The number of pixels (user-specified) to use in the entropy calculation / the default number (the number of pixels in the scan).***IMPORTANT:When comparing results of different gel scans, make sure you specify the same number of pixels for each analysis (which must be less than or equal to the lowest resolution of all the scans).entropy: Entropy is reported in "nits" - units analogous to "bits", but using natural logs rather than logs to the base 2.ent/max_ent: The ratio (entropy/ max_entropy), or normalized entropy, where max_entropy is the maximum possible value of the entropy (this maximum depends only on the number of pixels used in the entropy calculation). The advantages of using this ratio are that: (1) it lies between 0.0 and 1.0, so one can tell easily when an entropy is "large"; (2) it is "dimensionless" in the sense that it does not depend on the base of the logarithm used in calculating the sum -p log( p ).median: Position in lane which divides the signal in half.* vs. yr: corr. coef.(optional): Correlation coefficient of each of the reported measures against time, determined through least-squares regression. The time values used here come from the data (user- specified) in the submission form.

last modified: Tue Oct 9 16:43 2007