I am working on monodroid and wanna to have graphs in my application. I have some searches and find this: TChart inside LinearLayout generates "width and height must be > 0" and this: http://www.steema.com/teechart/mobile What is this TChart and whether this is free or not?
Thanks
Are you sure you couldn't find this information on the website you link to yourself?
Quote from your own link:
The TeeChart for Android Java charting library for Google's Android platform is written in native Android Java and supports most teechart series types including pie chart, line chart, points, area, bar, gauges and maps and 2D,3D formats.
Regarding to the library being free or not, just have a look at the download page: there's a registered version and evaluation version. The latter is free for download and includes all features of the full version, but only runs for 50 days. I'm sure there'll be license instructions with the downloadable evaluation version too, that further details any possible limitations.