Stéphane Ducasse <stephane.ducasse(a)inria.fr> writes:
>> On 24 Feb 2019, at 21:27, rsykora(a)disroot.org wrote:
>> Dear list,
>> I am checking what Roassal can do and was wondering if I
>> could use it for quick data analysis, e.g.,
>> to draw a simple xy-data graph from a file and play around
>> interactively with that, with the possibility to zoom / zoom back,
>> switch easily to logarithmic axes, etc.
>> So far I see RTGrapher, but as far as I can tell, no usable zooming
>> functionality exists. Is there anything better?
> Did you check the book?
Yes, I especially checked
> And the examples that are shipped with Roassal.
I went through them, too.
As far as zooming in/out is concerned, I only found that there are two tools:
which allows one to zoom in a rectangle, but only as if the graph was a
picture, i.e., no axes are redrawn, fonts get bigger, etc.
which I haven't figured out what it is supposed to do (without reading
I haven't found any more relevant example which would allow me to zoom
in/back in the sense one needs to see more details from a graph.
On the zooming out feature, you could check specifically  and on a
more general note .  Was made two years ago, and maybe zooming has
been improved and  will get a major boost on March while working on
the Dataviz paper and port Grafoscopio to Pharo 7.x.