How do I create/generate/host a graph/chart and post to twitter.

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VB

Hi,

I have written a program in VB.net that sits on a 'server' computer and logs temperature data over time. When the temperature data meets certain criteria an alert is posted to twitter for users to see/respond.

What I would like to do is also post a graph (an image of the graph or link to webpage with the graph).

Not so much after code, but more intereted in conceptually what is the best approach to do this and what tools are available for someone on limited budget. Should be a fairly simple project but haven't worked with too many of the APIs available to date.

I am thinking about using a Google Visualisation API to do this. My application has the data written to an SQLite db, so is easy to read the data required, but what do I do from there.

Do I:
1) Create the graph on the server machine and then upload the image?
2) Code a webpage with embeded code for the graph and then have the program upload this to the cloud (somewhere) and then post the link?
3) Something else ...

Many thanks for any help with the concept.