Thank you Alex.

I was able to plot some nice Ebola cases very easily now:

================================================================

tab := RTTabTable new input: (ZnEasy

get: 'https://raw.githubusercontent.com/cmrivers/ebola/master/country_timeseries.csv')

contents usingDelimiter: $,.

tab removeFirstRow.

tab replaceEmptyValuesWith: '0' inColumns: (2 to: 12) asArray.

tab convertColumnsAsInteger: (2 to: 12) asArray.

tab convertColumnAsDateAndTime: 1.

tab replaceZeroWithCumulativeValuesInColumns: (2 to:12) asArray.

data := tab values reversed.

minEntry := data minFor: #first.

b := RTCharterBuilder new.

b extent: 400@200.

b shape ellipse size:0.

b points: data.

b connectDotColor: Color blue.

b allY: [ :v | v at: 3 ].

b allX: [ :v | v first julianDayNumber - minEntry first julianDayNumber ].

b axisConfiguration 

labelRotation: -30;

labelConvertion: [ :v | (Date julianDayNumber: v + minEntry first julianDayNumber) ].

b axisX.

b resetAxisConfiguration.

b axisY.

b build.

lb := RTLegend2Builder new.

lb view: b view.

lb addText: 'Ebola cases'.

lb addColor: Color blue text: 'Guinea cases'.

lb build

================================================================

<Screen Shot 2014-09-23 at 11.03.04.png>

On Mon, Sep 22, 2014 at 10:31 PM, Alexandre Bergel <alexandre.bergel@me.com> wrote:

Hi!

Here is a post that describe how to have dates on the X-axis. 

This has been a recurrent problem, which is why I would like to share it with you. 

Dates are particular values that requires an adequate control over what is being displayed on X-axis. The julianDayNumber converts a date into a number.

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

methods := RTObject withAllSubclasses flatCollect: #methods.

methods := methods reject: [ :m | m numberOfLinesOfCode > 150 ].

oldestMethod := methods minFor: #date.

b := RTCharterBuilder new.

b extent: 800 @ 200.

b shape circle size: 5; color: (Color blue alpha: 0.1).

b interaction popup.

b points: methods.

b allY: #numberOfLinesOfCode.

b allX: [ :m | m date julianDayNumber - oldestMethod date julianDayNumber ].

b axisConfiguration 

noDecimals;

title: 'LOC'.

b axisY.

b axisConfiguration 

title: '';

labelRotation: -30;

numberOfTicks: 10;

numberOfLabels: 10;

labelConvertion: [ :v | (Date julianDayNumber: v + oldestMethod date julianDayNumber) ].

b axisX.

b build

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

<Screen Shot 2014-09-22 at 5.23.22 PM.png>

Cheers,

Alexandre

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

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Every DSL ends up being Smalltalk
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