i am trying to use plotly to create a heatmap that include 4 paramaeters for each subject in different category. But for some reasons, it does not show a complete heatmap for it (see figure).
The upper part is blank but it show contain colour blocks based on my Excel sheet

For the plotly demo code of Multi-Color Parallel Categories Diagram, it was using a column with integer values to define color, i.e. the “Survived” column in the titanic data set.

I am a new user of plotly and currently am struggling to plot a 3D surface envelop given the minimum and maximum values.