Example of embedding a figure into an existing Tk canvas

[alexeicolin]

A new example that shows how to embed a matplotlib figure into an existing canvas at an arbitrary location. This is useful for integrating matplotlib output with graphical output that is already created using Tk drawing and not subject to be ported into matplotlib.

This example complements embedding_in_tk.py and embedding_in_tk2.py both of which use the FigureCanvasTkAgg function which creates a new Tk canvas.

[tacaswell]

If I am understanding this code right, it creates a temporary Agg canvas, draws the figure, copies the Agg buffer to a TK photo object, and then draws the photo on to the existinc canvas?

👍 from me, but someone who know TK should take a look at this.

[alexeicolin]

@tacaswell yep. I found this useful for adding a matplotlib plot to an existing diagramming application that was drawing the diagrams using TkInter Python bindings -- the x-axis of the plot had to be matched with the axis of the Tk diagram, so it was best to literally insert the plot into the same Tk canvas.