Daviz is a data visualisation tool for IOS. The App works both on iPhone and iPad. The macro language which is used by Daviz is very similar to the one you can find in Plot2 (http://plot2.micw.org).
How it works
In the App you have to enter a data source which is just an URL. The protocol has to be https. In the simplest case this can be a text file which provides data and formatting information.
It is also possible to send data directly via IOS sharing to Daviz.
You can build very complex data sources which creates high quality plots.
This example is build with PHP and retrieves realtime data from a database.
There is also a syntax mode for Coda2 available: http://apps.micw.org/apps/plot2/downloads/Plot2-Daviz.mode.zip
This example shows the basic concept for your data source. You can find all available commands in the documentation.
name 'test.txt' atext bottom 'X' atext left 'X^2' asetgrid all yes 1 1 2 4 3 9 4 16 5 25