[Gretl-users] more on scatter plot labels
I am talking about adding the values of a qualitative variable, e.g.
country codes, as labels.
As an example from my megacity research, imagine a scatter plot of carbon
footprint (y-axis) vs city population (x-axis). In such a plot, it would be
very useful if the data points were labeled with the megacity name.
So I am suggesting that two separate improvements be considered for gretl:
(1) Add the capability of handling qualitative (i.e. text) variables,
something that is sorely missing right now. I have to manually delete
columns containing text from Excel files that I want to open in gretl,
which is inconvenient. If anything else, gretl could ignore such columns,
not give an error and refuse to open such a file.
(2) Add the capability of adding a qualitative variable as labels of the
points of a scatter plot.
Many thanks to all for your thoughts,
John
On Wed, Jun 1, 2022 at 1:00 AM <gretl-users-request(a)gretlml.univpm.it>
wrote:
Am 31.05.2022 um 00:19 schrieb John Paravantis:
> If I may get back to my suggestion, I understand that it may be possible
> to add data labels via commands, but it would appear to me that it would
> not be too difficult to add an option of selecting the values of a
> variable as labels, since the option of adding labels to individual
> points is already built in in the edit dialog of a scatter plot.
John, let me ask the more fundamental question, why would one want the
values as labels? I mean in a scatter plot the values are on the axes
and the location of the data point communicates those values already.
OK, sometimes one wants to see the exact digits and then a kind of
mouse-over tooltip effect is nice. But really printing/displaying the
values right now does not sound to me like a natural GUI feature.
cheers
sven
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