Hi!

Well��� Building the list of coordinate is not a big deal :-)

{ 5 . 1 . 2 . 5 } withIndexCollect: [ :v :index | v @ index ]

Alexandre

--��
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Alexandre Bergel ��http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

On Jun 17, 2015, at 7:04 AM, Luc Fabresse <luc.fabresse@gmail.com> wrote:

Hi Alex,

Thanks for your answer.

I misunderstood��RTStackedDataSet.

To me, it does not do what the doc says ;-)

I want to do exactly that:

c := RTGrapher new.

ds := RTDataSet new.��

ds dotShape color: Color red.��

ds points: {5@1 . 1@2 . 20@3 . 5@4 }.

ds x: [ :e | e y ].

ds y: [ :e | e x ].

c add: ds.

c axisX noDecimal.��

c axisY noDecimal.

c build.

c view inspect.

But I would like to not write by hand (or compute) the X values in the data set which are the indexes of the element.

Thanks,

#Luc

2015-06-16 22:39 GMT+02:00 Alexandre Bergel <alexandre.bergel@me.com>:

Hi Luc!

This is something that is not really intuitive in Roassal. I am not sure whether this is a bug, but until now, we usually disable the labels on the X-axis.

So, your script should be��

-=-=-=-=-=-=-=-=-=-=-=-=

b := RTGrapher new.
ds := RTStackedDataSet new.
ds dotShape color: Color red.
ds points: #(5 1 20 5).
ds y: #yourself.
b add: ds.
b axisX noLabel; noTick.
b axisY noDecimal.
b
-=-=-=-=-=-=-=-=-=-=-=-=

<Screen Shot 2015-06-16 at 5.37.44 PM.png>

If you need ticks and labels, you can simply do:

-=-=-=-=-=-=-=-=-=-=

b := RTGrapher new.
ds := RTStackedDataSet new.
ds barShape width: 10.
ds barChartWithBarCenteredTitle: #yourself.
ds points: #(5 1 20 5).
ds y: #yourself.
b add: ds.
b axisX noLabel; noTick.
b axisY noDecimal.
��
b
-=-=-=-=-=-=-=-=-=-=

<Screen Shot 2015-06-16 at 5.39.28 PM.png>

I hope this solves your problem.

Cheers,

Alexandre

On Jun 15, 2015, at 6:20 PM, Luc Fabresse <luc.fabresse@gmail.com> wrote:

Hi,

The doc here [1] says: "Data points may be stacked, meaning that the index of the point in the��collection is its X value."

When I use the same example as in the doc but with labels and ticks:

b := RTGrapher new.
ds := RTStackedDataSet new.
ds dotShape color: Color red.
ds points: #(5 1 20 5).
ds y: #yourself.
b add: ds.
b axisX noDecimal.
b axisY noDecimal.
b build.
b view inspect

it seems that y values are not aligned on x ones (i.e. I would expect the first red point to be��1@5). Is it a bug or did I misunderstood something?


<Screen Shot 2015-06-15 at 23.18.36.png>


[1]��https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Grapher/0202-Grapher.html


Thanks,

#Luc

--��
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel ��http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.