ryah ([info]four) wrote,
@ 2008-05-08 15:29:00
Previous Entry  Add to memories!  Tell a Friend!  Next Entry
question
What is a good way to visualize a one dimensional data set? Perhaps for a list of dates in time line like a list of commit times into an SCM. The obvious way is to plot dots on a line but often I think it isn't so easy to see the distribution.

Perhaps plotting a density function?

E.g. You could pick a resolution window and count the points in that. The left hand end point of that window would be the input of the function -- the count would be the output. Maybe something a bit more complicated with a normally weighted average?

Any other suggestions? Surface plot of density function crossed with the window resolution?



(Post a new comment)


[info]util
2008-05-08 04:15 pm UTC (link)
Starting out with a plot of the raw data always seems like a good idea. For times, you might want to create a histogram, binning by hour of the day and day of the week, which of course is related to plotting the density. If you want to compare distributions, qq-plots are one of the most valuable visual tools. I'll be curious to hear what you do settle on.

(Reply to this)


[info]evan
2008-05-08 05:20 pm UTC (link)
Regarding density functions:
http://www.maths.uwa.edu.au/~duongt/seminars/intro2kde/

(Reply to this)


Create an Account
Forgot your login?
Login w/ OpenID
English • Español • Deutsch • Русский…