I tried to draw like this picture but failed. I used Dia. What can I use to help draw it? I'm using Ubuntu, so software that runs on Unix operating systems would be preferred.
Is there any software that allows to draw block diagrams like this: http://upload.wikimedia.org/wikipedia/commons/f/f5/Windows_2000_architecture.png Or like this:
I'm interested to know what sort of software - beyond basic standard graphics out of Excel - people use to generate data visualisations. Do you craft things by hand and then build them in something ...