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diff --git a/tkblt/README.md b/tkblt/README.md new file mode 100644 index 0000000..c5a5b74 --- /dev/null +++ b/tkblt/README.md @@ -0,0 +1,28 @@ +[](https://doi.org/10.5281/zenodo.1041783) +# tkblt +Introduction to the TkBLT library + +TkBLT is a library of extensions to the Tk library. It adds new +commands and variables to the application's interpreter. + +TkBLT is a derived version of the BLT Toolkit by George A. Howlett, +for Tcl/Tk 8.5/8.6, is TEA compatible, with full support for MacOSX and +Windows, and is fully compatible with the Tk API. TkBLT is released +under the original BSD license. TkBLT includes only the Graph and +Barchart Tk widgets, and the Tcl Vector command. + +The following commands are added to the interpreter from the TkBLT library: + +Graph: A 2D plotting widget. Plots two variable data in a window with an optional +legend and annotations. It has of several components; coordinate axes, +crosshairs, a legend, and a collection of elements and tags. + +Barchart: A barchart widget. Plots two-variable data as rectangular bars in a +window. The x-coordinate values designate the position of the bar along +the x-axis, while the y-coordinate values designate the magnitude. +The barchart widget has of several components; coordinate axes, +crosshairs, a legend, and a collection of elements and tags. + +Vector: Creates a vector of floating point values. The vector's components +can be manipulated in three ways: through a Tcl array variable, a Tcl +command, or the C API. |