Using the Functional Graphics Tool with DrScheme

• The images can't be copied and pasted on some platforms.
• The images can't be saved out to a file and then loaded back in.

We have an alternative implementation of the functional graphics package for DrScheme that works around these problems. However, it incurs some disadvantages of its own:

• This version is a DrScheme "Tool" rather than "Teachpack," which means that once installed, you have no choice about loading it (short of de-installing it), unlike a teachpack which can be selectively used.
• Furthermore, this Tool version is less likely to work in other DrScheme releases than the Teachpack version is.

If, having considered this tradeoff, you still consider it worth using the tool version, read on for a description of how to install the tool. Please note that once you have installed this tool, you should not use the fungraph.ss teachpack, since it duplicates the same functionality. Instead, the only one of our teachpacks you should still use is the oops.ss teachpack, for the object-oriented programming system.

One way to install the tool is to go into DrScheme's File menu and select "Install .plt File...". Then enter (or better, paste in) the URL http://www.gustavus.edu/+max/concabs/schemes/drscheme/tools/fungraph/fungraph.plt and click OK. Note that you have to restart DrScheme in order to have the functional graphics tool available for use. From now on, it will be automatically loaded every time you start DrScheme.

Alternatively, you can download the fungraph.plt package from any web browser and then manually run the setup-plt (or "Setup PLT") program (included in the DrScheme distribution) on that package in order to install the tool. (Under Windows and Mac OS X, the simplest way to run the Setup PLT program on fungraph.plt after downloading it is simply to double-click the icon for fungraph.plt. Or, your web browser may well offer to "open" fungraph.plt for you; if you accept, that will run Setup PLT on fungraph.plt, installing the tool.)