You need to send three things to plotly - the x, y, and V data. For the type of plot, you could have a 'contour' or 'heatmap' - technically, you can do a surface plot also (I think this is still ...

Data Visualization - Plotly and Cufflinks. Plotly is a library that allows you to create interactive plots that you can use in dashboards or websites (you can save them as html files or static images) ...