Within this patch I add some utilities to CGN in order to make It
easier to create histograms. I have to translate them to english, but
they are usable.

darcs-hash:0df52f8750d326184f64d392983fa11635609844

corrected plot-histogram xtics problem

Now plot-histogram plots the xtics in diagonal.

darcs-hash:d9546deb2ffdeccd94b778f3039ad4bf5b451289

Now plot2d is complete. There are some more options to implement, but It can print everythin: discrete plots with (optional) errorbars , lisp functions (also lambda functions) and gnuplot functions (lisp strings containing something like "sin(x)" ). Now we can do everything CGN can do (except plotting histograms) with only this function.

darcs-hash:0ec49e6ae97d5fa26ef22a791448a8275d34de9a

Since now plot2d understands errorbars.

darcs-hash:e8c7dcbea5caeeceea3f9f31cbb309aec7722e82

Dan Becker has contributed the plot-points-and-function function, which is similar to plot-scatter-graphic. I've added It, plus some changes he has sent to change the use of nth to elt. I've also written the plot-points-and-function-test test, and updated some autodoc. Also the manual documents this new function and the limitation to use gnuplot >= 4.2.0.

darcs-hash:78e89b972ddbca09f82e8e734a6947ae4c6c06fa

Now we use elt instead of nth. This way CGN can understand vectors and lists easily. Hack contributed by Dan.

darcs-hash:e489b7fdd6acb791466f8c4f662d229682a15bc4

We are going towards CGN 009, and we want to improve the quality of the source code. One step is to improve docstrings for CGN.

darcs-hash:6f07c343eebe4d9413b1ebd6bb1cd5698a3724f3

Now plot-scatter-graphic supports a key parameter called fit-function. It's a string with a gnuplot function. I've also updated doc strings and the pdf manual.

darcs-hash:13398f7f849499d8392c3b043fa8cfa91899560a

From now, CGN can use multiple connections. You can run (cgn::multiple-connection-test) to see an example about how It works. I've improved the pdf manual and the documentation too. I've corrected a little bug that prevented CGN 009 from running on Windows.009 from running on Windows.

darcs-hash:d444f76f7fa79fa03f614769c711b8ae950b5cf5

Now plot3d understands the same options that plot2d.

darcs-hash:ff3cf8029cc37be44957fb8b717b651035c57b90

From now, we have plot3d. It only understand a function to plot. At the moment, we don't use the paramether options at all.

Also format-gnuplot and gformat start a gnuplot connection if It's not running when you use them. This doesn't override the default use of the with-gnuplot macro, but makes things easier for novices.

We add some demos too: see plot2d-test, plot-test and splot-test.

darcs-hash:a5432da09f725669447a08e95afa818a072f39a6

darcs-hash:776c10fb6bde3e22a796135034423527888ed9ed