Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.


LindsE
Posts:
113
Registered:
2/4/07


Rank Histogram (Talagrand Diagram)
Posted:
Apr 10, 2007 11:54 AM


Good day;
I am attempting to create a rank histogram with a total of 6960 data points. I do not entirely understand this concept, and was wondering if anyone could provide me with a basic stepbystep howto?! Here's what I've been trying to follow:
To construct a rank histogram, do the following: 1. At every observation (or analysis) point rank the N ensemble members from lowest to highest. This represents N+1 possible bins that the observation could fit into, including the two extremes 2. Identify which bin the observation falls into at each point 3. Tally over many observations to create a histogram of rank
Here's what I don't follow: 1) If I have 6960 points; should there be 6961 bins? 2) I've grouped by data into 10 sets. I tried arranging these points in ascending order, for each group, but I don't think this is what I should be doing. Any suggestions as to how to 'translate' the above steps into beginner language?
Thanks; Lindsay



