Plotsy is the answer to anyone who needs versatile, powerful plotting package for Mac OS X at a reasonable price. GoToTheBoard supplied a number of features for Plotsy, having experience in plotting packages within Objective-C, C++ and C (which is what Plotsy was written in). If you have any trouble, please contact us at contact[at]gototheboard.com.
Plotsy supports easy drag and drop of elements, quick color assignments, font size changes, etc - everything you'd expect from a plotting package. It can export PNG, JPG and PDF file formats (it will simply recognize the extension you type).
One of the key features for Plotsy is it's ease of use, and when weighing it's capabilities it was clear that scripting ability was something that could be used by a number of users for high quality publication data. Python is a well known, and widely used language, and incorporating this into Plotsy allows anyone who uses Python plotting packages to easily move over and use or reuse existing code that integrates with drag and drop UI features..
If you find something you don't like, or perhaps a bug, please just let us know. Email us at support[at]gototheboard.com and we'll get back to you as quickly as we can!.