Re: [Gnuplot-info] Plotting glucose levels for diabetes

[Jeremy N. - ml g. <jn....@wi...>]

On 2021-11-23 22:30, Dave Horsfall wrote:

> I now have a working inkjet (it took a while to configure it for my 
> LAN)
> and it occurred to me that if I choose the RGB colours appropriately 
> for
> each "time slot" then not only will they be intuitive on an inkjet (I
> envisage a sort of a light colour getting brighter then fading to dark 
> in
> the form of coloured bars) but will also show up as an appropriate
> greyscale on the laser printer so that I can use either one.

[I'm new to gnuplot, and haven't actually used it yet, but have looked 
at
lots of examples of its use.  I'm expecting to write programs to take
data from elsewhere and generate gnuplot scripts to create charts, also
health-related.  So I've got no practical advice yet.]


Even so... reading this I wondered how much data you were planning to 
put
on each graph?  Just one day's worth, or many days'?

Is the colour gradient supposed to represent time of day, or eg the
width of a (say) 2-hour band of time in the day - both of which are what
I thought you might mean (but don't see the point), or to show levels of
danger from seriously hypo, mildly hypo, normal, hyper etc?

It seems to me that colour, if it's worth using at all, is worth using
to highlight the verging on dangerous or actually dangerous readings.


Regarding your other question about times of day, what's wrong (though 
it
maybe depends on how many days' data are in one chart) with just using
the hour number (from 00 to 23)?

-- 
Jeremy Nicoll - my opinions are my own