I would like to create a chart like the one on the left here in order to visualize maximum probabilities:

enter image description here

Is there a name for this type of chart, and is there a tool to create a similar one with my own data?

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    $\begingroup$ This paper just calls it 'word alignment' (see fig 1 & 2), though it adds lines joining the pairs, while this calls it an 'alignment matrix' (see the discussion under Figure 1), which makes sense. $\endgroup$ – Glen_b Aug 3 '13 at 2:18

The one on the left is a heatmap with discrete color scheme. As a bonus the one on the right is rotated slopegraph.

Heatmap examples in R (with ggplot2): Quick Heatmap Plotting


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