Peter,
Thanks for your quick response and sorry for my late one. I give a try
of your solution, but implemented them in my visualization process would
take more time that the one I had available, so finally I went with the
graphics editor solution.
There is any other way I can help with debugging this? Should I open a
bug report to get this solved on Roassal?
Cheers,
Offray
El 13/04/15 a las 11:08, Peter Uhnák escribió:
I think there is a bug in the exporter, because the canvas has a color (which is
white and _not_ transparent).
Normally you can set the color of the of the canvas (view canvas color: Color
purple), but the default exporter (I assume you are exporting it via
GT-inspector) is ignoring it.
There is however second exporter which you can use
~~~~~~~~~~~~~~~~~~~~~
|v fileName|
v := RTView new.
v canvas color: Color purple.
v addAll: (RTEllipse new color: Color black; size: 30; elementsOn: (1 to: 10)).
RTCircleLayout on: v elements.
fileName := UITheme builder
fileSave: 'Enter the PNG file name'
extensions: #('png')
path: nil.
"fileName := '/tmp/test.png' asFileReference."
fileName notNil ifTrue: [
(DCTRCanvasExporter canvas: v canvas)
format: #png;
fileName: fileName fullName;
export ].
v
~~~~~~~~~~~~~~~~~~~~~~~
You could also add the export code (with minor modification) to
GLMRoassal2Presentation>>defaultActions but there seems to be some kind of bug
that clears the content of the playground when executed from GLM, which is a big
wtf, but maybe that's just my mixed up configuration.
Peter
On Mon, Apr 13, 2015 at 5:17 PM, Offray Vladimir Luna Cárdenas
<off...@riseup.net <mailto:off...@riseup.net>> wrote:
Hi,
I have finally finished the first part of my visualization project of
political discourses on Twitter. You can see the details here:
http://mutabit.com/offray/__static/blog/output/posts/__visualizing-__politicianspolitical-__discourses-on-twitter.html
<http://mutabit.com/offray/static/blog/output/posts/visualizing-politicianspolitical-discourses-on-twitter.html>
(As you can see Pharo was not used to extract the data, just to scrap it,
structure it and visualize it).
The politicians tag cloud look nice if the background is white, because the
png background is transparent, but if you share it on Twitter, the black
background makes the tag cloud invisible. I could use image editing
programs
to change the background from transparent to white, but I would like to
know
if there is a way to make that change inside Pharo/Roasal.
Thanks for all your support in making this ideas possible.
Cheers,
Offray
