[Gretl-users] Graphing news

Here's some more news about developments in gretl's graphing capabilities, in CVS and the Windows snapshot. I'd encourage people to test the new things and report any problems. * Color selection. We now distinguish between (a) choice of a color "palette" for graphs in general, and (b) ad hoc choice of colors for lines/points in a particular graph. There's a new tab labeled "Palette" in the GUI graph controller. If you make changes there, they will be remembered from session to session and will affect all subsequent graphs. And under the "Lines" tab in the controller you have a color button for each line: use this to make changes for the current graph only. (This requires gnuplot 4.2 or higher). * Adding and removing user-defined lines. Under the lines tab (for some sorts of graphs) you have an "Add line" button to add a line defined by a formula. Once such a line is added, you then get a "Remove" button to remove it. The added line will have a solid/dotted selector. This is a limited first stab: it turns out it is easy to define a line as black dots in gnuplot, and that's what the "dotted" selection does (and so it disables the color selector for the added line). A more full-featured selector may follow. * Choosing point types. For lines defined by data-points, if you select the "points" or "linespoints" style (GUI controller, "Lines" tab), you can then select the specific point-type from a drop-down list (cross, square, diamond, etc.). * Boxplots. These used to be handled via native gretl code, but now they have been handed over to gnuplot, using gnuplot's "candlesticks" style. If you create a boxplot, clicking on the plot now shows the full range of options that are available for other sorts of graph. You can invoke the GUI controller to edit the plot. -- Allin Cottrell Department of Economics Wake Forest University