I'm using a PlotData2D to plot only points, and not to draw lines between them, and I don't understand why I cannot plot a set of one point, or even no points at all ?

I saw that there is a check at the beginning of the PlotData2D constructor, but is this condition required by the library PLplot ? It seems arbitrary to me, as I saw multiple scatter plots done with PLplot, so it is not required to draw lines, and why would you put a minimum at two points if not to draw at least one line ?

Your library is really awesome and intuitive, but this thing just dumbfounded me.

    Hi, I am building and using the Gtkmm-Plplot 2.5.0 project on Ubuntu 22.04. I installed the plplot library via the command apt install meson libplot-dev, however it installs the library version 1.15.0. The process of building and installing Gtkmm-Plplot does not report any errors, but when I use it I am prompted with a Requested device extcairo not available error.
    I used example 1 and compiled it using the command g++ test.cc -o program 'pkg-config --cflags --libs gtkmm-plplot-2.0'.I have not found where the problem is and am seeking help here.

Building with meson is cool, autotools not so much.

gtkmm4 was released today... time to have a look at it.

Hi
Branch master function cairo_set_source_rgba has a problem and the parameter cr is nullptr,
Release gtkmm-plplot-2.4 does not have this problem.

Environment:
Windows 10 x64, vs2019

I have a simple component with monitoring feature: https://github.com/wuwbobo2021/simple-cairo-plot. But it is simple and only provides basic functions.

Hi, I am so glad to have come across your library, thank so much.

I'd like to ask a question if I may. Perhaps you can suggest a workaround, though I think it may be a small bug.

The legend box height is a little too small when using subscripts, it clips. It is not that important for now, perhaps I can even fix it by having a look at the source and suggest a fix in time.

See the screenshot for details:

https://drive.google.com/file/d/1hsvz1GRRugJSPT-jKx4nB2wLrLOzAc4D/view?usp=sharing

Another feature request would be to make dashed grid lines an option on the graph background, as shown in the screen shot ( I did it by just drawing them using PlotObject2DLine myself for now), though mine do not line up with the axes labels lines currently, but hopefully you get my drift.

Only having the option to have solid grid lines or none I find I didn't suit my tastes. I find the former too busy on the eye, the latter too bare. I guess it could be added to the list of options with set_box_style is what I had in mind.

set_box_style(Gtk::PLplot::BOX_DASHED_GRID_LINE_OR_SOMETHING_LIKE_THAT);

Awesome work. 😀

Best regards

Thank you for your library. I have been searching for a plot library for GTKmm for a long time.

Is it possible to use date / time formatting for axes like here in plplot ?

I couldn't find the option in gtkmm-plplot but I think it could be easy to add because it work on plplot-cpp.