21 Aug
2014
21 Aug
'14
1:22 p.m.
Hi Sean,
Thank you very much about all your feedback. You have sent many emails about Roassal
(which is good!). As you can imagine, we are all having a crazy time at ESUG. After ESUG I
will take time to carefully reply to all your emails.
So, bare with us if we are slow at answering now :-)
Cheers,
Alexandre
On Aug 21, 2014, at 12:39 AM, Sean P. DeNigris <sean(a)clipperadams.com> wrote:
Roassal is sooo cool! Maybe /too/ cool?! ;-)
I'm having a hard time with RTCharterBuilder. My confusion comes from
everything appearing on the same level, kind of like Amber's html canvas
being magically changed when you enter a tag #with: block. Check out this
snippet for example:
b := RTCharterBuilder new.
...
b interaction popupText: [ :point | point someMessage ].
b points: aCollectionOfPointsOfTypeA.
b connectDotColor: Color green.
b y: [ :r | r newLikes ].
b x: [ :d | d date julianDayNumber ].
...
b interaction popupText: [ :point | point anotherMessage ].
b points: aCollectionOfPointsOfTypeB.
b connectDotColor: Color red.
b y: [ :r | r second * 50 ].
b x: [ :d | d first julianDayNumber ].
The fact that #x: and y: mean different things depending on the order of the
rest of the script is a little "too helpful" to me. I'd much rather have
things that are a property of a particular data set belong to a tangible
object. Something like:
dataSet := RTDataSet new
points: anotherCollection;
connectDotColor: Color red;
y: [ :r | r second * 50 ];
x: [ :d | d first julianDayNumber ].
b addDataSet: dataSet.
The magic confuses other not-so-magical things. Like, afterwards, I tried to
set #popupText: differently for each data set, but they all seemed to be
applied to the both data sets, and were causing errors because the type of
points were different, so I was getting DNUs. Now here was the real cost: I
wasn't sure whether #popupText: was per-chart, or there was some special
ordering necessary e.g. "#popupText: before #points:". This lead to flopping
around followed by giving up. I eventually got frustrated enough that I
hacked in an #isKindOf: in both #popupText: blocks since I couldn't delegate
the #popupText: to the point objects because it was specific to this
particular chart.
-----
Cheers,
Sean
--
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Alexandre Bergel http://www.bergel.eu
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