Date: prev next · Thread: first prev next last
2014 Archives by date, by thread · List index

At 10:37 24/07/2014 -0400, Dave Boland wrote:
... I need to do some charts, and I have not figured out how to get Calc to give me what I want, so I need a pointer or two. I want line charts, with multiple curves per axis (up to 8). Perhaps something like this:

The data is arranged in record format like this:

Date      Location  Temperature    Humidity
--------- --------- -------------- ---------
7/1/14    Syracuse              71       79%
7/1/14    Albany                68       70%
7/1/14    Rochester             69       70%
7/8/14    Syracuse              82       68%
7/8/14    Albany                79       67%
7/8/14    Rochester             75       66%

So how do I end up with one chart that shows three curves for the three cities over time (Location and Date on the X-axis, Temperature on the Y-axis)?

Er, you presumably want just the date on the horizontal axis, with locations represented by separate lines.

What you need to do is to assemble a table in an appropriate fashion for a chart to be possible. You will probably want four columns - for dates and the three locations - with the temperature values in the body of the table. That way, there would be one row for each date. Creating the chart from this would be simple.

So how to achieve that table? Well, one way would be simply to enter the data that way in the first place. However the data arises, it may be most convenient to massage it into the required form as you enter it. Note that the way you are currently entering data, you have each date entered three times and each location very many times. That's never a good idea. How many weeks before you enter "Sryacuse" by mistake?

Alternatively, you can simply extract what you need from your existing table into the required one. Your date column would be entered manually or - better if appropriate - filled down from the first two weeks' dates. The body of the table would then have formulae which retrieved the appropriate data from the original table. You might be able to do this using the VLOOKUP() function, but it won't be simple, as you have two conditions to search for: date and location. The simplest solution might be to sort your original table by location (or you could enter the data into three tables in the first place), and then to use VLOOKUP() to search for the appropriate date and harvest the temperature value from within just the relevant part of the original table - that now containing the values for each location.

It's probably very much easier if you create three tables in the first place - one for each location. - Does exactly what it says on the tin

Really? So it sends your mail more quickly than other systems? Wow!

I trust this helps.

Brian Barker

To unsubscribe e-mail to:
Posting guidelines + more:
List archive:
All messages sent to this list will be publicly archived and cannot be deleted


Privacy Policy | Impressum (Legal Info) | Copyright information: Unless otherwise specified, all text and images on this website are licensed under the Creative Commons Attribution-Share Alike 3.0 License. This does not include the source code of LibreOffice, which is licensed under the Mozilla Public License (MPLv2). "LibreOffice" and "The Document Foundation" are registered trademarks of their corresponding registered owners or are in actual use as trademarks in one or more countries. Their respective logos and icons are also subject to international copyright laws. Use thereof is explained in our trademark policy.