On Fri, 27 May 2011, Tomáš Houška wrote:
 I would like to ask for a little help. I have two time series
(hourly
 observations) - data available here:
 
http://is.muni.cz/de/99107/prices.gretl
 And I would like to get the basic information about the frequency of
 each observation value  ( => frequencies with an incremental value
 (bin width) of 1 unit).
 When I go through the GUI, I can see that, for example, for the time
 series CZ, there is n=8760, so there is 8760 different values of
 observations. But for some reason, I am not able to make 8760 bins to
 see the required information. 
It doesn't seem to make much sense to use 8760 bins for 8760
observations. There are only 3033 distinct values in the CZ
series.
If you really want a frequency plot of all the distinct values,
then first set CZ to be discrete, via the console:
discrete CZ
then use the frequency plot menu item.
Allin Cottrell