Re: A plea from a semi-newbie

[Jean Bréfort <jean brefort normalesup org>]

Hi,

If I understand correctly what you are doing, you need to add columns A
and B to get the date and time in the same field. You can do that either
in the sheet, using a new column, or in the series data field. For X
values use A:A+B:B and for y values C:C. That should work if the time
column contains only an hour and not a hidden date.

Hope this helps,
Jean

Le mercredi 14 janvier 2015 à 15:22 -0700, rodgos a écrit :
> I've had a fair amount of experience with Gnumeric, in the past, drawing
> date/temperature graphs. But, I've had a year layoff and now find the
> Gnumeric no longer offers the options I require. To explain. I have a
> datalogger which records air temperature against date and time. Each month I
> download the data and enter it into Gnumeric. So far, so good. I have a
> three column listing of date, time and temperature. In the old Gnumeric,,
> simultaneously a graph was made from the data. Time and date on the x axis,
> and temperature on the y axis. After adding Titles, Axis names, keys, and
> rainfall data I could then export the graph into jpg, for further additions
> of totals etc, in Gimp. With this new Gnumeric, the graph in not
> automatically generated. Whilst I can call up a graph, I can find no way to
> get meaningful data onto it. What I need is for the combined columns A and B 
> (date and time), to form the X axis and column C  (temperature) to form the
> Y axis. Any ideas, please?
>
>
>
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